Seminars

The Department of Engineering runs a series of seminars to which all are welcome to attend.

 


 

Title: Boundary-layer collisions and their impact on global flow dynamics

Speaker: Dr Sophie Calabretto

Organiser: Department of Engineering

Time and date: 2-3pm, Wednesday 19th of September, 2018

Venue: Attenborough Building, LT3

Abstract:

The unsteady flow generated due to the impulsive motion of a torus or sphere is a paradigm for the study of many temporally developing boundary layers. The boundary layer is known to exhibit a finite-time singularity at the equator. We present results of a study that focuses upon the behaviour of the flow after the onset of this singularity. Our computational results demonstrate that the singularity in the boundary layer manifests as the ejection of a radial jet. This radial jet is preceded by a toroidal starting vortex pair, which detaches and propagates away from the sphere. The radial jet subsequently develops an absolute instability, which propagates upstream towards the sphere surface.

 


 

Title: High speed jet noise:  crackle and screech

Speaker: Dr Jyothi Punekar

Organiser: Department of Engineering

Time and date: 2-3pm, Wednesday 22nd of August, 2018

Venue: MacLellan Room, Engineering Building

Abstract:

Crackle noise is experimentally investigated for cold underexpanded and overexpanded lab size jets of Mach number MJ=2. The underexpanded jet is found to cause much more significant crackle than the overexpanded jet at the Mach direction quadrant of the far field. This is argued to be associated with the higher acoustic energy emitted by the underexpanded jet at low frequencies. On the other hand, the overexpanded jet shows a fundamental screech tone not seen for the underexpanded jet. Spectral and statistical skewness analysis is given.

 


 

Title: Development and future of the massive MIMO (Multiple-Input Multiple-Output) radio lab

Speaker: Dr Li-Ke Huang, Viavi Solutions

Organiser: Department of Engineering

Time and date: 11am-12pm, Tuesday 21st of August, 2018

Venue: MacLellan Room, Engineering Building

Abstract:

Viavi Wireless would like to present and share our observations of the progresses, paradigm shifts, drivers and trends in 5G core technology design and validation R&D cycles from the market’s leading network infrastructure validation test vendor point of view. Basing on our engagements with the world’s top-tier network operators and vendors with Viavi’s 1st to the market 5G PoC and validation solutions, our R&D team have been in a unique position to enable and observe the core technology development process of the 5G eco-system from prove of concept phases to the current early R&D and trial phases. In response to the significant 5G technological advancements comparing to the previous generations of wireless technology, as a test vendor, we found we have to be making technological innovations in 5G test solutions, so that the new KPIs and new features that are highly complex and intelligent could be test and validated. We will demonstrate our conclusions and observations using cooperation results for the most representative 5G core technology examples including Massive MIMO, mMTC, URLLC and AI-assisted test solutions.

 


 

Title: Supersonic boundary layer control: passive and active means

Speaker: Dr Zhengzhong Sun, City, University of London

Organiser: Department of Engineering

Time and date: 2-3pm, Wednesday 15th of August, 2018

Venue: Charles Wilson Fourth Floor SR 403 Rutland, Charles Wilson Fourth Floor SR 404 Gartree

Abstract:

Shock wave boundary layer interaction (SWBLI) takes place in various high-speed applications (e.g. supersonic inlet) and impacts the aerodynamic efficiency through the resulted flow separation and unsteadiness. Boundary layer control are widely applied to address the adverse effects caused by SWBLI. The present talk will present some supersonic boundary layer control results through passive and active means. The passive method is in the form of micro-vortex generator (MVG). Tomographic PIV has been used to explore its control mechanism and revealed the three-dimensional vortical organization produced by MVG. In the area of active flow control, some recent advances of the plasma-based actuators (e.g. surface-arc plasma actuator and plasma synthetic jet actuator) will be reported, including the new multi-element driving methods and their extraordinary control effect on SWBLI.

 


 

Title: Investigating small airway closure in the human lung using a multi-scale approach

Speaker: Mr James Campbell, University of Leicester

Organiser: Department of Engineering

Time and date: 2:30-3:00pm, Wednesday 8th of August, 2018

Venue: MacLellan Room, Engineering Building

Abstract: TBC

 


 

Title: A novel approach to investigating gait and structural stability – from perceptual processes to biomechanics

Speaker: Mr Artur Adam Soczawa-Stronczyk, University of Leicester

Organiser: Department of Engineering

Time and date: 2-2:30pm, Wednesday 8th of August, 2018

Venue: MacLellan Room, Engineering Building

Abstract: TBC

 


 

Title: The story of bioresorbable coronary stent

Speaker: Professor Jingzhe Pan, University of Leicester

Organiser: Department of Engineering

Time and date: 2-3pm, Friday 22th of June, 2018

Venue: MacLellan Room, Engineering Building

Abstract:

This talk will start with an introduction on the development of bioresorbable coronary stent and current issues with it. The talk will then focus on recent work at Leicester on the development of a mathematical framework for computer modelling of biodegradation of bioresorbable implants including  bioresorbable coronary stent. The mathematical equations are solved using the finite element method and used for the design of various bioresorbable implants. The material parameters in the equations are obtained through “reverse engineering” of existing devices for which degradation data exit. The data and equations can then be used to predict the degradation rate of new devices that are made of the same polymer. It has been shown that the mathematical model is able to fit all the available experimental data for PLAs and PGA in the literature. A series of demonstration examples will be presented. In particular the model is extended to predicting drug release from degrading polymeric devices as well as change in mechanical properties, such as Young’s modulus, during degradation.

 


 

Title: Mechanically disrupt biological barriers for highly efficient drug delivery

Speaker: Dr Michael Chen, University of Edinburgh

Organiser: Department of Engineering

Time and date: 2-3pm, Thursday 21st of June 2018

Venue: SR 211, Attenborough Seminar Block Second Floor

Abstract:

Many biological barriers are of great importance. For example, stratum corneum, the outmost layer of skin, effectively protects people from being invaded by external microorganisms such as bacteria and viruses. Cell membranes help organisms maintain homeostasis by controlling substances to enter and leave cells. However, on the other hand, these biological barriers seriously restrict drug delivery. For instance, stratum corneum has a very dense structure and only allows very small molecules with a molecular weight of below 500 Da to permeate whereas most drug molecules are much larger than that. A wide variety of drugs including genes needs to enter cells for proper functioning but cell membranes are not permeable to them. To overcome these biological barriers, many drug-delivery routes are being actively researched and developed. In this presentation, I will focus on our research of two advanced materials and nanotechnology approaches for delivering vaccines through the skin for painless and efficient immunisation and transporting drug molecules to cross cell membranes for high-throughput intracellular delivery.

 


 

Title: Linking M-level learning outcomes with Chartered Engineer competencies

Speaker: Dr Hugo Williams, University of Leicester

Organiser: Department of Engineering

Time and date: 2-3pm, Wednesday 20th of June, 2018

Venue: MacLellan Room, Engineering Building

Abstract:

This seminar will provide practical ideas and discussion on how we can enhance the coverage of ‘M-level’ skills and competencies in our modules. This is an extremely topical issue for the Department – we will be introducing the new transformed curriculum and welcoming the professional engineering institutions for an accreditation visit in the coming academic year. The seminar will firstly give examples of how the M-level competencies have been used to inform module-level intended learning outcomes in our new curricula. Masters level courses are the basic academic requirement for later registration as a Chartered Engineer. The speaker will give a perspective on how his recent experience as an interviewer for Chartered Engineer applications could be used to enhance our curricula and student experience. There is an opportunity to use these experiences to better engage students with aspects of curriculum that can be challenging, such as dealing with ambiguity and leadership, by signposting the importance of these skills in their development towards Chartership. This requires all colleagues to have a clear understanding of what these competences are, whether or not they are themselves Chartered.
The Engineering Department runs a series of L&T seminars as part of our commitment to continuous improvement. The aim is to discuss practical actions that can be implemented into our teaching, feedback and support to improve our students’ experience and performance. In this case it will also help colleagues who are themselves working towards Chartered Engineer status.

 


 

Title: Recent developments in aerodynamic and aeroacoustic research at the University of Bristol

Speaker: Dr Mahdi Azarpeyvand, University of Bristol

Organiser: Department of Engineering

Time and date: 2-3pm, Wednesday 13th of June 2018

Venue: Room 119, Michael Atiyah Building

Abstract:

The University of Bristol has a long tradition in experimental aerodynamics research, specifically on wing aerodynamics, in collaboration with Airbus Filton. This seminar concerns the more recent contributions of Dr Azapeyvand in aero-acoustics, including plans for a hemi-anechoic open-section wind tunnel also capable of measuring noise from jets. A complement of numerical and analytical tools are being developed that enable unsteady flows and noise to be investigated from different angles, towards achieving both fundamental advances and applications to large passenger aircraft.

 


 

Title: Service ageing of insulating polymers: an unsolved problem

Speaker: Leonard Dissado, Professor Emeritus of Engineering, University of Leicester

Organiser: Department of Engineering

Time and date: 11am, Wednesday 6th of June, 2018

Venue: Attenborough Seminar Block, Ground Floor ATT001

Abstract:

Insulating materials are an essential feature of systems that are required to function at a high field and/or voltage and the commonest are polymer dielectrics. Utilities typically specify a working life of 25 to 40 years, or a given number of charge-discharge cycles and the manufacturer is expected to guarantee this reliability. Sometimes a leeway of one or two failures is allowable. The guarantee is based on a number of relatively short term tests that are analysed via empirical expressions and extrapolated to service conditions. Attempts to determine the physics of the processes that bring about eventual failure are hampered by the very local nature of the changes that make them difficult to detect and identify as to their nature. In this presentation I will describe the present approach and describe the factors that are known to change on ageing. I will go on to describe a generic quantitative theory that has been validated with respect to insulating systems such as mini-cables and thin polymer films. Finally I will show how applying the theory to simulations of thick insulation built up from thin films yields insights as to how local damage due to ageing leads eventually to failure and points to a change in the crucial factor for the limitation of life that occurs at low fields.

Professor Dissado’s career spans for over 55 years in Engineering. After rotating between Australia and England twice he settled in at Chelsea College in 1977 to carry out research into dielectrics. His interest in breakdown and associated topics started with a consultancy with STL begun in 1981. He has published more than 330 papers and one book together with John Fothergill. He moved to The University of Leicester (1995), and was promoted to Professor (1998), and is now Professor Emeritus. He has been a visiting Professor at The University Pierre and Marie Curie in Paris, Paul Sabatier University in Toulouse, Nagoya University, and NIST at Boulder Colorado. He has given numerous invited lectures, including the E.O.Forster (ICSD 2001) and the Whitehead memorial lecture (CEIDP 2002). Currently he is an Associate Editor of IEEE Transactions DEI and is a member of the DEIS Publications Committee. He was awarded the degree Doctuer Honoris Causa by the Universite Paul Sabatier, Toulouse (2007), and a Honorary Professorship of Xian Jiaotong University, China, (2008), and is the 2018 recipient of the IEEE DEIS Dakin award.

 


 

Title: Engineering helping to treat cardiac arrhythmias

Speaker: Dr Fernando Schlindwein, Biomedical Engineering Research Theme Lead, University of Leicester

Organiser: Department of Engineering

Time and date: 2pm, Friday 25th of May 2018

Venue: MacLellan Room, Engineering Building

Abstract:

The beating of the 4 chambers of the heart follows an orderly electrical activation of the myocardium (heart muscle) that results in the mechanical function of pumping the blood. Any disturbance in the timing or the sequence of the electrical activation will result in a less efficient mechanical pumping action or, in severe cases, in no net mechanical function at all (and death). Such disturbances are called cardiac arrhythmias. We are particularly interested in one type of cardiac arrhythmia that affects the top chambers of the heart (the atria), called Atrial Fibrillation (AF). Atrial fibrillation is an uncoordinated atrial activation with deterioration of mechanical function of the atria. It affects about 1 million of people in UK, with 200,000 new cases each year (AFA 2010). The incidence grows with age. The symptoms of AF are palpitation, tiredness, shortness of breath, dizziness and chest pain. AF Increases risk of stroke 5 fold (AF does not kill you but stroke does…). The cost of managing a patient with AF in the UK is ca. £2500/year/patient (£11.3 billion in EU). Atrial fibrillation (AF) is associated with activation that can be (i) fast, (ii) out of sequence, and (iii) disorganised. We are developing tools to guide persistent AF (persAF) ablation based on (i) spectral analysis, (ii) phase and points of singularity (PS) and (iii) fractionation (entropy). As we identify the areas of the heart that are either causing or maintaining AF we can produce accurate 3D maps that highlight those areas as candidates for catheter ablation that will cure AF for that patient. It is important that the 3D mapping of the target areas is done in real-time so not to delay excessively the catheterisation procedure. I will give a general talk on the normal electrical activation of the heart, then I will concentrate on the abnormal activation associated with AF and I will show how our research team is using Engineering tools to assist our colleagues in Cardiology who perform ‘clever’ ablation to cure AF.

 


 

Now a production reality, Compound Semiconductors, SiC and GaN power switch transistors demand new circuit and system design approaches to achieve performance advantage

Speaker: Geoff Haynes, EPSRC Industrial Champion Power Electronics Centre

Organiser: Department of Engineering

Time and date: 11am-12pm, Wednesday 9th of May 2018

Venue: ATT 206, Attenborough Second Floor LR 206

Abstract:

The benefits of these new switch elements cannot just be achieved by replacing silicon transistors in an existing power converter design. Their adoption is being delayed by a need to develop entirely new design solutions that release their true benefits. This opens a key opportunity for companies to collaborate with academia to resource and accelerate this process. The presentation compares existing Si, SiC and GaN transistors to establish relative merits and beneficial applications. Examples of these emerging applications are explored.  Key design and measurement challenges presented by the prime advantages of increased higher switching speed and power density are explored.

Geoff Haynes' career spans 50 years of semiconductor experience from the design of early MOS custom integrated circuits at Marconi Microelectronics through building international sales activities for Harris Semiconductor and Maxim Integrated Products to co-founding SiGeM, SiGe Semiconductor and GaN Systems. Now, retired from full time employment,  he is engaged as Industrial Champion by the UK EPSRC PE Centre responsible for recognizing and promoting valuable early stage research activity for further development by the PEUK community.

 


 

Title: Sound in aircraft engine

Speaker: Dr Ed Brambley, University of Warwick

Organiser: Department of Engineering

Time and date: 1-2pm, Tuesday 2nd of May 2018

Venue: Lecture Theatre 2, Engineering Building

Abstract:

New aircraft are subject to ever stricter noise restrictions.  Due to the great expense of experimental trials, new aircraft and new engine designs rely heavily on mathematical modelling and numerical simulation.  This talk will describe some of the recently-developed mathematical models of acoustic linings, which are used to absorb sound in aircraft engines, and some of the recently-developed numerical techniques used in Computational AeroAcoustics (CAA) simulations.  The talk will concentrate on why these models are still wrong, and what current attempts are at finding better models and techniques.

 


 

Title: Identifying different dynamical regimes of rotating convection - implications for the Earth's core

Speaker: Mr Robert Long, University of Leeds

Organiser: Department of Engineering

Time and date: 1-2pm, Tuesday 24th of April 2018

Venue: Lecture Theatre 1, Engineering Building

Abstract:

Convection-driven flows under the influence of rotation exist in many natural systems such as the liquid iron cores of terrestrial planets. The dominant role of rotational forces on core dynamics prevents state of the art numerical models from being run with Earth-like parameters. In order to establish a connection between numerical models and the geophysical motivation, we turn to scaling laws. Such scaling laws depict the general behaviour of the chosen quantity with respect to others in a given dynamical regime.

We undertake a systematic investigation of non-magnetic convection in a rotating spherical shell. The dynamics of the system are determined by the Rayleigh number (Ra), measuring the strength of the thermal driving force, the Prandtl number (Pr), the ratio of viscous and thermal diffusion, and the Ekman number (E), measuring the strength of the Coriolis force. Different regimes of rotating convection are identified and the scaling behaviours of both the heat transfer (Nusselt number, thermal boundary layers) and the flow properties (typical flow speeds, length scales and mechanical boundary layers) are reported for each of the regimes.

 


 

Title: Evolutionary optimisation methods and systems engineering research

Speaker: Dr Pavlos Lazaridis, University of Huddersfield

Organiser: Department of Engineering

Time and date: 11am-12pm, Wednesday 18th of April 2018

Venue: Second Floor LR Belvoir Park Annex, Charles Wilson Building

Abstract:

Evolutionary optimisation methods, which have superseded older genetic algorithms, have been used with success in many scientific fields, including computational electromagnetics. These are successfully applied to the optimisation of broadcasting and wideband antennas. Evolutionary optimisation methods mimic nature’s behaviour, e.g. the behaviour of bee swarms (PSO-Particle Swarm Optimisation), the behaviour of ants (ACO-Ant Colony Optimisation), and the behaviour of weeds expanding into fertile ground to become a dominant culture (IWO-Invasive Weed Optimisation). Evolutionary algorithms perform a selective random search for a solution to a given engineering problem. All such methods are of the stochastic-type and use random number generators. Powerful computers are required often needing CPU and GPU acceleration, and, ultimately, computer clusters. IWO, PSO, ACO, and other schemes, intended to increase execution speed, will be investigated. An important objective is the experimental evaluation of the optimum parameters to be used for each method for typical antenna optimisation problems (e.g. Yagis, wideband log-periodics and discones). Evolutionary optimisation algorithms are used in collaboration with a variety of antenna calculation models-engines (e.g. Method of Moments (MoM) models as used in the 2D NEC - Numerical Electromagnetics Code), 3D Finite Element Methods (FEM) and 3D Finite Difference Time Domain (FDTD) methods as used in the EMPro and CST software packages. Results of 3D antenna modelling and optimisation are compared to accurate antenna measurements performed in the laboratory or in specialised outdoor measurements facilities.

 


 

Title: Reliable power electronics – an enabler for renewable energy generation and utilization

Speaker: Dr Huai Wang, Aalborg University

Organiser: Department of Engineering

Time and date: 11am-12pm, Monday 12th of March 2018

Venue: SR 409 Garendon, Charles Wilson Building

Abstract:

Power electronic converters are “hidden heroes” in many of our modern energy systems, such as wind turbines, electric vehicles, tractions, aircrafts, medical devices, mobile phones, smart homes, etc. They serve as “electric energy routers” by conditioning the voltage, current, or frequency of electricity generated or utilized. While extensive research efforts have been made to the efficiency improvement for power electronic converters, the understanding of its failure mechanisms and reliability aspect performance is still at the early stage in both academic and industry research. Industry leading companies are making efforts to the transition from product providers to service providers. The life-cycle performance of power electronic converters is becoming more and more important. This talk will firstly discuss the demands for more reliable power electronic converter systems in renewable energy generation and utilization. Secondly, the specific scientific challenges of power electronic reliability research with respect to those for mechanical systems and microelectronics systems will be presented. Thirdly, the state-of-the-art reliability-oriented design method, mission profile based component-level and system-level reliability modeling will be introduced by a few case studies.

 


 

Title: Time-dependent conformal mappings with applications to nonlinear sloshing

Speaker: Dr Matt Turner, University of Surrey

Organiser: Department of Engineering

Time and date: 2-3pm, Wednesday 29th of November 2017

Venue: McLellan Room, Engineering Building

Abstract:

In this talk we examine two key features of time-dependent conformal mappings in doubly-connected regions, the evolution of the conformal modulus, Q(t), and the boundary transformation generalizing the Hilbert transform. Results of this theory are applied to inviscid, incompressible, irrotational fluid sloshing in a rectangular vessel. It is shown that the explicit calculation of the conformal modulus is essential to correctly predict features of the flow, such as the free surface evolution.

We also present results for fully dynamic simulations which use a time-dependent conformal mapping and the Garrick generalization of the Hilbert transform to map the physical domain to a time-dependent rectangle in the computational domain. The results of this new approach are compared to the complementary numerical scheme of Frandsen (2004) and it is shown that correct calculation of the conformal modulus is essential in order to obtain agreement between the two methods.

 


 

Title: Challenges of seamless communication

Speaker: Dr Glenfor Mapp, Midlesex University

Organiser: Department of Engineering

Time and date: 2-3 pm, Wednesday 22nd of November 2017

Venue: Bennett Building, Lower Ground Floor Lecture Theatre 5

Abstract:

Due to the development of several wireless technologies, seamless communication, in which users are always connected to the networking infrastructure, is now possible. However, there are still significant hurdles to be overcome to produce techniques and mechanisms that can be actually deployed in the real world.  In that regard, highly mobile environments, such as vehicular networks, present very serious challenges to achieving this goal.

The talk first looks at the issues of providing ubiquitous seamless communication. It initially does so in the context of the Y-Comm Framework and then looks at how the results from this framework can be used to analyse seamless communication in Vehicular Ad-Hoc Networks (VANETs). In order to explore this further, two VANET testbeds have been built.  This talk will detail their development and deployment as well as the results obtained from these experimental systems. The talk concludes by looking at how new types of networks, such as VANETs, will affect the evolution of the Future Internet.



 

Title: Space & Space Park at the University of Leicester

Speaker: Professor Mark Sims, University of Leicester

Organiser: Department of Engineering

Time and date: 12:00-1:00 pm, Wednesday 15th of November 2017

Venue: Belvoir Park Lounge, Charles Wilson, 2nd floor

Abstract:

Prof. Mark Sims obtained his PhD from the University of Leicester, working on x-ray astronomy shadow cameras. He was a European Space Agency Research Fellow based at ESTEC, Noordwijk, the Netherlands working on high energy x-ray astronomy detectors from May 1981 to January 1984. He returned to Leicester in February 1984 and since then he has been involved in about 9 space missions with roles from data analysis, through launch site operations to flight operations, and acting as Principal Investigator on the Life Marker Chip (LMC) life detection instrument based upon immuno-assay techniques on ExoMars. He chaired the STFC Aurora (Space Exploration) Advisory Committee from 2005 to 2009 and is currently a member of the National Space Technology Steering Group (NSTSG)  and a member of the UK Space Agency’s Space Technology Advisory Committee (STAC).

During this seminar, Prof. Sims will talk about his current interests on Space research, and the Space Park at the University of Leicester. The Space Park Leicester is an ambitious initiative to develop a global hub and collaborative community based on space and space-enabled technologies . Based in Leicester, adjacent to the National Space Centre, the Park's first building are expected to be ready in 2019. It is part of the Leicestershire Enterprise Zone and was formally launched in March 2017 as part of the Government's Midlands Engine strategy with an allocation of £12.87 million. The Space Park is a collaboration between the University of Leicester, the City of Leicester and the Leicester and Leicestershire Economic Partnership (LLEP). When fully open, the Park will combine University research and teaching facilities with a range of research institutions and international commercial partners. Alongside the development of a new generation of cutting-edge satellite technology, the site will be home to detailed analysis of space-enabled data that can transform sectors such as international communications, resource management, environmental monitoring and disaster relief.

 


 

Title: Rolls-Royce 1st generation powder nickel disc alloy RR1000

Speaker: Dr Wei Li, Rolls-Royce

Organiser: Department of Engineering

Time and date: 10:00-11:00 am, Wednesday 8th of November 2017

Venue: Belvoir Park Annexe, Charles Wilson

AbstractRR1000 is a powder disc alloy developed by Rolls-Royce. The journey of R&D was long and arduous but also rewarding. There have been many interesting findings with the technology being steadily scaled up from laboratory specimen towards engine component.  There is still room for further research into the material behaviour, which means opportunities for the industrial and academic partners.

 


 

Title: Stability of oscillatory rotating disk boundary layers

Speaker: Scott  Morgan, Cardiff University

Organiser: Department of Engineering

Time and date: 2:00-4:00 pm, Wednesday 1st of November 2017

Venue: McLellan Room, Engineering Building

AbstractThe rotating disk boundary layer has long been considered as providing an archetypal model for studying the stability of three-dimensional boundary-layer flows, and the crossflow inflexion point instability mechanism is common to both the rotating disk boundary layer and the flow over a swept wing. Thus the investigation of strategies for controlling the behaviour of disturbances that develop in the rotating disk flow may prove to be helpful for the identification and assessment of aerodynamical technologies that have the potential to maintain laminar flow over swept wings. We will consider the changes in the stability behaviour that arise when the rotating disk base-flow configuration is altered by imposing a periodic modulation in the rotation rate of the disk surface. Thomas et. al. [Proc. R. Soc. A (2011) 467:2643-2662] have previously demonstrated that Tollmien-Schlichting waves can be stabilised when a similarly induced Stokes layer is conjoined to a plane channel flow. Current work encompasses three distinct investigatory approaches. Linearised direct numerical simulations have been conducted, using the vorticity-based methods that were first adopted by Davies & Carpenter [J. Comput. Phys (2001) 172:119-165]. These simulations are complemented by a local in time linear stability analysis, that is made possible by imposing an artificial frozen base-flow approximation. This localised analysis is deployed together with a more exact global treatment based upon Floquet theory, which avoids the need for any simplification of the temporal dependency of the base-flow.

 


 

Title: Photo-induced force microscopy: a technique for hyperspectral nanochemical mapping

Speaker: Dr Sung Park, Molecular Vista

Organiser: Department of Engineering

Time and date: 3:00-4:00 pm, Wednesday 25th of October 2017

Venue: Room 119, Michael Atiyah Building

Abstract: Infrared Photo-induced Force Microscopy (IR PiFM) is based on an atomic force microscopy (AFM) platform that is coupled to a widely tunable mid-IR laser. PiFM measures the dipole induced at or near the surface of a sample by an excitation light source by detecting the dipole-dipole force that exists between the induced dipole in the sample and the mirror image dipole in the metallic AFM tip. This interaction is strongly affected by the optical absorption spectrum of the sample, thereby providing a significant spectral contrast mechanism which can be used to differentiate between chemical species. Due to its AFM heritage, PiFM acquires both the topography and spectral images concurrently and naturally provides information on the relationship between local chemistry and topology with sub 10 nm spatial resolution on a variety of samples. PiFM spectral images surpass spectral images that are generated via other techniques such as scanning transmission X-ray microscopy (based on synchrotron source), micro confocal Raman microscopy, and electron microscopes, both in spatial resolution and chemical specificity. The breadth of the capabilities of PiFM will be highlighted by presenting data on various material systems (organics, inorganics, 1D/2D, bio-molecules, and nano-photonic materials). By enabling imaging at the nm-scale with chemical specificity, PiFM provides a powerful new analytical method for deepening our understanding of nanomaterials and facilitating technological applications of such materials.

 


 

Title: Control of multivariable systems using classical control techniques

Speaker: Dr Carlos Ugalde-Loo, Cardiff University

Organiser: Department of Engineering

Time and date: 2:00-3:00 pm, Wednesday 25th of October 2017

Venue: Room 119, Michael Atiyah Building

Abstract: Typically, the performance of a control design task is specified in pairs: in terms of an output response to a given input. This is clear for single-input single-output (SISO) problems, but is also convenient for multiple-input multiple-output (MIMO, multivariable) systems. The control system analysis and design for SISO plants may be relatively simple and classical tools (such as Bode/ Nyquist/ Nichols plots, root locus) can be applied following plant linearization. In this context, stability margins are well accepted measures to assess the performance and robustness of the control system. The problem becomes challenging whenever the plant is MIMO - particularly if cross-coupling is strong. Individual channel analysis and design (ICAD) is a frequency domain based analysis and control design framework that can be used to investigate the potential and limitations for the feedback design of any MIMO linear time-invariant system. It is an interactive process involving the required specifications, plant characteristics and the multivariable feedback design process. A key feature of ICAD is that classical control techniques can be employed irrespective of coupling circumstances. To achieve this, the multivariable plant is represented by an equivalent set of SISO systems, where the MIMO nature of the plant is encapsulated in multivariable structure functions with no loss of information. In this presentation, some insight into the use of ICAD will be provided through representative examples. As it will be observed, ICAD can be employed to design high-performance and highly robust control systems.

 


 

Title: An integrated meta analysis of the breast cancer transcriptome for the identification of markers associated with proliferation

Speaker: Professor Graham Ball, Nottingham Trent University

Organiser: Department of Engineering

Time and date: 2:00-3:00 pm, Wednesday 18th of October 2017

Venue: Room 119, Michael Atiyah Building

Abstract: Cancer is a complex disease with a myriad of forms and prognoses occurring within each type.  For example in breast cancer using genomic profiling in excess of 80 sub types have been identified.   The ability to characterise the disease for each patient may offer the potential to assess the molecular sub-type of the disease and thus accurately determine the patients’ prognostic outcome.  Methodologies such as mass spectrometry based proteomics and gene expression arrays offer the potential for characterisation of disease derived samples using a huge number of proteins or genes.  This depth of information while providing a comprehensive overview of a disease state also proves problematic in its complexity.  One has to search through potentially hundreds of thousands of pieces of information for consistent features that address a clinical question in the population. The human mind is very good at finding patterns in a system but is not able to conduct the task repetitively for large numbers of parameters.  Conversely computers are very good at searching for features in such a data space but previously defined statistical methods are not able to cope with the high complexity.  Here we present the application of Artificial Neural Networks (ANNs, a form of artificial intelligence having the characteristics of both human pattern recognition and computer automated searching) to finding genomic solutions to questions in cancer.  Here we present the use of a range of statistical and artificial intelligence based machine learning techniques to develop prognostic models for breast cancer.

 


 

Title: The use of CFD in the design of a 1000mph car - BLOODHOUND SSC, an engineering adventure

Speaker: Dr Ben Evans, Swansea University

Organiser: Department of Engineering

Time and date: 2:00-3:00 pm, Wednesday 11th of October 2017

Venue: Room 119, Michael Atiyah Building

AbstractThe BLOODHOUND Supersonic Car, launched by Richard Noble and Andy Green in October 2008 is set to take the Land Speed Record into a whole new speed regime.  The team, including researchers from Swansea University at its heart, plans to take a manned vehicle to 1000mph by 2018, increasing the current Land Speed Record (763mph) by over 30%.  This target presents the team with massive scientific and engineering challenges, not least of which being how the car will stay attached to the ground at these speeds.  The Computational Fluid Dynamics research team at The College of Engineering at Swansea University has been working on answering these questions, and predicting the overall aerodynamic behaviour of such a vehicle. High Performance Computing was used as an integral component of the design and optimization cycles for the vehicle.  In order to achieve the final design predicted lift and drag responses over 14 full vehicle design iterations were carried out and numerous sub-assembly optimization studies. The design work on this vehicle has inspired the development of novel methods for simulating high speed particle entrainment, mesh-based optimization and CFD data visualization.  The BLOODHOUND SSC vehicle has now been built with testing set to commence in October 2017.

 


 

Title: Additive manufacturing of cellular structures

Speaker: Professor Ian Ashcroft, University of Nottingham

Organiser: Department of Engineering

Time and date: 2:00-3:00 pm, Wednesday 4th of October 2017

Venue: Room 119, Michael Atiyah Building

 


 

Title: China Manufacturing 2025 - an action program for strong manufacturing industry in China

Speaker: Professor Baicheng Lu, Chinese Academy of Engineering and Tsinghua University

Organiser: Department of Engineering

Time and date: 2:00-3:00 pm, Monday 31st of July 2017

Venue: Lecture Theatre 1, Engineering Building

Abstract: China manufacturing industry is big with tremendous achievements in recent 30 more years. Nevertheless, China manufacturing industry is not strong, and also faces a number of new challenges. Since 2013, “Strategy Study for a Strong manufacturing Country” is underway by the Chinese Academy of Engineering. As a result, an action program titled “China Manufacturing 2025” was proposed by CAE and approved by the State Council in early 2014. Then, the official document “China Manufacturing 2025”, drafted by the Ministry of Industry and Information Technology, was announced by State Council in May 19 of 2015. A three-step strategic target for strong manufacturing industry is put forward, and the first strategic step is to make China manufacturing industry entering into the strong manufacturing community of the world in 2025. Hence, five guiding principles, nine strategic missions and five important projects, such as improving manufacturing innovation system, intelligent manufacturing, strengthening manufacturing fundamentals, green manufacturing and developing high end equipment are put forward in the action program.

 


 

Title: Research on offshore engineering at Dalian University of Technology

Speaker: Professor Yue Qianjin

Organiser: Department of Engineering

Time and date: 3:00-4:00 pm, Monday 3rd of July 2017

Venue: MacLellan Room, Engineering Building

Abstract: The presentation will introduce research activities in offshore and marine engineering in the School of Ocean Science and Technology, Dalian University of Technology, Panjin campus. Exploitation of ocean resources, such as offshore oil and gas, ocean energy and aquafarming requires large number of specially designed facilities and devices. Prof. Yue and his team has been founded by the Chinese government and industry to conduct many concept designs and analysis of major marine equipment and offshore structures. The presentation will provide an overview of this work.

 


 

Title: Fluid mechanics: complexity at all scales

Speaker: Professor Stephen Garrett

Organiser: Professor Mark Peel, Provost

Time and date: 5:30 pm, Tuesday 20th of June 2017

Venue: LT1 Charles Wilson Building

RSVP: inaugural@le.ac.uk

Abstract: Classical fluid mechanics might be dismissed as a simple application of Newton’s laws. The equations that govern the air flow over an A380’s wings can be written down easily, so isn’t fluids done and dusted as a research topic? What more can we possibly hope it will give us? Why does it continue to attract and entertain some of the brightest minds? Why is it still funded? Fluids is taught in all engineering, physics and mathematics programmes around the world. But where should it really sit within the often fiercely protected bounds between the traditional disciplines? Does it really matter anyway? In this lecture, Professor Garrett uses his own research path as a way of exploring the vastness of the subject and perhaps hint at some answers to these questions.



 

Title: Integrated computational materials engineering

Speaker: Dr Shuanglin Chen, Deputy Director of CompuTherm

Organiser: IMPaCT EPSRC Centre for Doctoral Training

Time and date: 3:00-4:00 pm, Monday 19th of June 2017

Venue: LT2 Engineering Building

Abstract: Integrated Computational Materials Engineering (ICME) has recently been highlighted as a methodology that can unlock great potential and benefits in cost-effective materials and process design. The CALPHAD method, which was first developed for the calculation of multi-component phase diagrams, has now been applied to a variety fields in materials science and engineering. The capabilities of CALPHAD-based modeling tools have been extended from calculating phase stability and thermodynamics of a materials system to simulating precipitation and diffusion kinetics. These modeling tools are regularly used by ICME practitioners to accelerate alloy design and development. This presentation will give a brief introduction to the modeling tools developed by CompuTherm based on the CALPHAD method. Unique features of our modeling tools, such as contour diagrams and high-throughput calculations, will be highlighted. Examples will be presented to demonstrate the successful applications of these modeling tools in ICME.



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