Professor Oubay Hassan

Professor Oubay Hassan

Oubay Hassan

 

Professor, College of Engineering

Overview

Specialist Subjects: Unstructured Mesh Generation, Computational Fluid Dynamics, Computational Electromagnetics and Parallel Processing

Research interest in computational methods for the solution of problems in engineering analysis and design.  

MBE FREng PhD DSc FICE CEng FLSW

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Research

Professor Hassan research interest is in computational methods for the solution of problems in engineering analysis and design. His main research areas are:

Professor Oubay Hassan and Professor Ken Morgan, in close partnership with BAE Systems, and Airbus have led the development of the FLITE system that enable the modelling of problems in computational fluid mechanics an computational electromagnetic.

 An excellent example, which received significant worldwide publicity, was the use of the developed FLITE system to support the aerodynamic design of THRUST SSC, the car which took the World Land Speed Record beyond the speed of sound in 1997.

Building on his previous success, he has led the team that has developed the CFD technologies that deemed required to ensure a successful aerodynamic design of the new BLOODHOUND Land Speed Record project. The main aim of this project is to use the BLOODHOUND SSC as the platform for provision of high-quality public engagement activities that motivate the next generation to deal with global 21st century challenges.

Selected publications

  • S. Walton, O. Hassan, K. Morgan, Reduced order mesh optimisation using proper orthogonal decomposition and a modified cuckoo search, International Journal for Numerical Methods in Engineering, 2013, 93, 5, pp.527, [ISSN:00295981], [DOI: 10.1002/nme.4400]
  • Ruben Sevilla, Oubay Hassan, Kenneth Morgan, An analysis of the performance of a high-order stabilised finite element method for simulating compressible flows, Computer Methods in Applied Mechanics and Engineering, 2013, 253, pp.15, [ISSN:00457825], [DOI: 10.1016/j.cma.2012.09.001]
  • Zhong Q. Xie, Ruben Sevilla, Oubay Hassan, Kenneth Morgan, The generation of arbitrary order curved meshes for 3D finite element analysis, Computational Mechanics, 2013, 51, 3, [ISSN:1432-0924], [DOI: 10.1007/s00466-012-0736-4]
  • Oubay Hassan, Aerodynamic Computations Using a Finite Volume Method with an HLLC Numerical Flux Function, Mathematical Modelling of Natural Phenomena, 2011, [DOI: 10.1051/mmnp/20116308]
  • Oubay Hassan, Computational fluid dynamics applied to the aerodynamic design of a land-based supersonic vehicle, Numerical Methods for Partial Differential Equations, 2011, [DOI: 10.1002/num.20644]
  • Oubay Hassan, A discontinuous finite element solution of the Boltzmann kinetic equation in collisionless and BGK forms for macroscopic gas flows, Applied Mathematical Modelling, 2011, [DOI: 10.1016/j.apm.2010.07.027]
  • Oubay Hassan, Modified cuckoo search: A new gradient free optimisation algorithm, Chaos, Solitons & Fractals, 2011, [DOI: 10.1016/j.chaos.2011.06.004]
  • Z. Q. Xie, O. Hassan, K. Morgan, Tailoring unstructured meshes for use with a 3D time domain co-volume algorithm for computational electromagnetics, International Journal for Numerical Methods in Engineering, 2011, 87, 1-5, [ISSN:00295981], [DOI: 10.1002/nme.2970]
  • Oubay Hassan, A discrete geometric conservation law (DGCL) for a cell vertex finite-volume algorithm on moving domains, International Journal for Numerical Methods in Biomedical Engineering, 2010, [DOI: 10.1002/cnm.1180]
  • Oubay Hassan, Characterization and modelling of electromagnetic interactions in aircraft, Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering, 2010, [DOI: 10.1243/09544100JAERO567]
  • Oubay Hassan, The Immersed Structural Potential Method for haemodynamic applications, Journal of Computational Physics, 2010, [DOI: 10.1016/j.jcp.2010.08.005]
  • Oubay Hassan, A high order hybrid finite element method applied to the solution of electromagnetic wave scattering problems in the time domain, Computational Mechanics, 2009, [DOI: 10.1007/s00466-009-0377-4]
  • Oubay Hassan, An integration scheme for electromagnetic scattering using plane wave edge elements, Advances in Engineering Software, 2009, 40, 1, pp.58-65, [ISSN:09659978], [DOI: 10.1016/j.advengsoft.2008.03.004]
  • Z. Q. Xie, O. Hassan, K. Morgan, A parallel implicit/explicit hybrid time domain method for computational electromagnetics, International Journal for Numerical Methods in Engineering, 2009, 80, 8, [ISSN:10970207], [DOI: 10.1002/nme.2654]
  • Oubay Hassan, Steady flow through a realistic human upper airway geometry, International Journal for Numerical Methods in Fluids, 2008, [DOI: 10.1002/fld.1805]
  • Oubay Hassan, Adaptive finite element methods in geodynamics: Convection dominated mid-ocean ridge and subduction zone simulations, International Journal of Numerical Methods for Heat & Fluid Flow, 2008, [DOI: 10.1108/09615530810899079]
  • Oubay Hassan, The simulation of 3D unsteady incompressible flows with moving boundaries on unstructured meshes, Computers & Fluids, 2008, 37, 5, pp.620-631, [ISSN:00457930], [DOI: 10.1016/j.compfluid.2007.07.013]
  • D.R. Davies, J.H. Davies, O. Hassan, K. Morgan, P. Nithiarasu, Adaptive finite element methods in geodynamics: Convection dominated mid-ocean ridge and subduction zone simulations, International Journal of Numerical Methods for Heat & Fluid Flow, 2008, 18, 7/8, pp.1015, [ISSN:0961-5539], [DOI: 10.1108/09615530810899079]
  • O. Hassan, , K. Morgan, N. P. Weatherill, A Method for Time Accurate Turbulent Compressible Fluid Flow Simulation with Moving Boundary Components Employing Local Remeshing, 2007, pp.1243-1266, [ISBN:0271-2091], [DOI: 10.1002/fld.1255]
  • P. D. Ledger, K. Morgan, O. Hassan, Electromagnetic scattering simulation using anH(curl) conforminghp finite element method in three dimensions, International Journal for Numerical Methods in Fluids, 2007, 53, 8, pp.1267, [ISSN:0271209110970363], [DOI: 10.1002/fld.1223]
  • O. Hassan, K. Morgan, N. Weatherill, Unstructured mesh methods for the solution of the unsteady compressible flow equations with moving boundary components, Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2007, 365, 1859, pp.2531, [ISSN:1364-503X1471-2962], [DOI: 10.1098/rsta.2007.2020]
  • D. R. Davies, J. H. Davies, O. Hassan, K. Morgan, P. Nithiarasu, Investigations into the applicability of adaptive finite element methods to two-dimensional infinite Prandtl number thermal and thermochemical convection, Geochemistry Geophysics Geosystems, 2007, 8, 5, [ISSN:1525-2027], [DOI: 10.1029/2006GC001470]
  • Desheng Wang, Oubay Hassan, Kenneth Morgan, Nigel Weatherill, Efficient Surface Reconstruction from Contours Based on Two-dimensional Delaunay Triangulation, 2006, pp.734-751, [ISBN:0029-5981], [DOI: 10.1002/nme.1465]
  • Desheng Wang, Oubay Hassan, Kenneth Morgan, Nigel Weatherill, Enhanced remeshing from STL files with applications to surface grid generation, Communications in Numerical Methods in Engineering, 2006, 23, 3, pp.227, [ISSN:10698299], [DOI: 10.1002/cnm.894]
  • A. J. Gil, Z. Zhang, O. Hassan, K. Morgan, Parallel Multigrid Detached Eddy Simulation Algorithm for Three-Dimensional Unsteady Incompressible Flows on Unstructured Meshes, Journal of Aerospace Engineering, 2006, 19, 4, pp.271, [ISSN:08931321], [DOI: 10.1061/(ASCE)0893-1321(2006)19:4(271)]
  • Desheng Wang, Oubay Hassan, Kenneth Morgan, Nigel Weatherill, Efficient surface reconstruction from contours based on two-dimensional Delaunay triangulation, International Journal for Numerical Methods in Engineering, 2006, 65, 5, pp.734, [ISSN:0029-59811097-0207], [DOI: 10.1002/nme.1465]
  • Desheng Wang, Oubay Hassan, Kenneth Morgan, Nigel Weatherill, EQSM: An efficient high quality surface grid generation method based on remeshing, Computer Methods in Applied Mechanics and Engineering, 2006, 195, 41-43, pp.5621, [ISSN:00457825], [DOI: 10.1016/j.cma.2005.10.028]
  • Igor Sazonov, Desheng Wang, Oubay Hassan, Kenneth Morgan, Nigel Weatherill, A stitching method for the generation of unstructured meshes for use with co-volume solution techniques, Computer Methods in Applied Mechanics and Engineering, 2006, 195, 13-16, pp.1826, [ISSN:00457825], [DOI: 10.1016/j.cma.2005.05.037]
  • Udo Tremel, Frank Deister, Oubay Hassan, Nigel P. Weatherill, Parallel generation of unstructured surface grids, Engineering with Computers, 2005, 21, 1, pp.36, [ISSN:0177-06671435-5663], [DOI: 10.1007/s00366-005-0311-0]
  • P.D. Ledger, K. Morgan, O. Hassan, Frequency and time domain electromagnetic scattering simulations employing higher order edge elements, Computer Methods in Applied Mechanics and Engineering, 2005, 194, 2-5, pp.105, [ISSN:00457825], [DOI: 10.1016/j.cma.2004.05.011]
  • Udo Tremel, Frank Deister, Oubay Hassan, Nigel P. Weatherill, Automatic Unstructured Surface Mesh Generation for Complex Configurations, 2004, pp.341-364, [ISBN:0271-2091], [DOI: 10.1002/fld.671]
  • Oubay Hassan, Parallel 3D time domain electromagnetic scattering simulations on unstructured meshes, CMES-COMPUTER MODELING IN ENGINEERING & SCIENCES, 2004, 5, 5, pp.383
  • Frank Deister, Udo Tremel, Oubay Hassan, Nigel P. Weatherill, Fully automatic and fast mesh size specification for unstructured mesh generation, Engineering with Computers, 2004, 20, 3, pp.237, [ISSN:0177-06671435-5663], [DOI: 10.1007/s00366-004-0291-5]
  • M. E. Hachemi, O. Hassan, K. Morgan, D. Rowse, N. Weatherill, A low-order unstructured-mesh approach for computational electromagnetics in the time domain, Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2004, 362, 1816, pp.445, [ISSN:1364-503X1471-2962], [DOI: 10.1098/rsta.2003.1330]
  • B. G. Larwood, N. P. Weatherill, O. Hassan, K. Morgan, Domain decomposition approach for parallel unstructured mesh generation, International Journal for Numerical Methods in Engineering, 2003, 58, 2, pp.177, [ISSN:0029-59811097-0207], [DOI: 10.1002/nme.769]
  • M. El Hachemi, O. Hassan, K. Morgan, D. P. Rowse, N. P. Weatherill, Hybrid methods for electromagnetic scattering simulations on overlapping grids, Communications in Numerical Methods in Engineering, 2003, 19, 9, pp.749, [ISSN:10698299], [DOI: 10.1002/cnm.625]
  • , O. Hassan, K. Morgan, N. P. Weatherill, A multigrid accelerated hybrid unstructured mesh method for 3D compressible turbulent flow, Computational Mechanics, 2003, 31, 1-2, pp.101, [ISSN:0178-76751432-0924], [DOI: 10.1007/s00466-002-0397-9]
  • P.D Ledger, K Morgan, J Peraire, O Hassan, N.P Weatherill, The development of an hp-adaptive finite element procedure for electromagnetic scattering problems, Finite Elements in Analysis and Design, 2003, 39, 8, pp.751, [ISSN:0168874X], [DOI: 10.1016/S0168-874X(03)00057-X]
  • , O. Hassan, K. Morgan, N. P. Weatherill, Agglomerated multigrid on hybrid unstructured meshes for compressible flow, International Journal for Numerical Methods in Fluids, 2002, 40, 3-4, pp.593, [ISSN:0271-20911097-0363], [DOI: 10.1002/fld.316]
  • N. P. Weatherill, O. Hassan, K. Morgan, J. W. Jones, B. G. Larwood, K. Sorenson, Aerospace simulations on parallel computers using unstructured grids, International Journal for Numerical Methods in Fluids, 2002, 40, 1-2, pp.171, [ISSN:0271-20911097-0363], [DOI: 10.1002/fld.362]
  • N.P. Weatherill, O. Hassan, K. Morgan, J.W. Jones, B. Larwood, Towards fully parallel aerospace simulations on unstructured meshes, Engineering Computations, 2001, 18, 3/4, pp.347, [ISSN:0264-4401], [DOI: 10.1108/02644400110386984]
  • Y. Zheng, N.P. Weatherill, O. Hassan, Topology Abstraction of Surface Models for Three-Dimensional Grid Generation, Engineering with Computers, 2001, 17, 1, pp.28, [ISSN:0177-06671435-5663], [DOI: 10.1007/s003660170021]
  • J. Bonet, H. Marriott, O. Hassan, Stability and comparison of different linear tetrahedral formulations for nearly incompressible explicit dynamic applications, International Journal for Numerical Methods in Engineering, 2001, 50, 1, pp.119, [ISSN:0029-59811097-0207], [DOI: 10.1002/1097-0207(20010110)50:1<119::AID-NME24>3.0.CO;2-C]
  • K. Morgan, O. Hassan, N. E. Pegg, N. P. Weatherill, The simulation of electromagnetic scattering in piecewise homogeneous media using unstructured grids, Computational Mechanics, 2000, 25, 5, pp.438, [ISSN:0178-76751432-0924], [DOI: 10.1007/s004660050491]
  • O. Hassan, E.J. Probert, K. Morgan, N.P. Weatherill, Unsteady flow simulation using unstructured meshes, Computer Methods in Applied Mechanics and Engineering, 2000, 189, 4, pp.1247, [ISSN:00457825], [DOI: 10.1016/S0045-7825(99)00376-X]

Teaching

  • EG-221 - Structural Mechanics IIa (14/15)
  • EG-201 - Fluid Mechanics II (14/15)

Research theses supervised

PhD

  • 2014 - Development of a 3D parallel solution algorithm for filtration process (2nd Supervisor: Professor Nidal Hilal)
  • 2013 - Marker and Cell Compressible Flow Solver on unstructured meshes. (2nd Supervisor: Professor Kenneth Morgan)
  • 2013 - computational aerodynamic design optimisation for complex geometries (1st Supervisor: Dr Benjamin Evans)
  • 2013 - Numerical simulation and optimisation of micro and nano resonators (1st Supervisor: Dr Ruben Sevilla)
  • 2013 - Meshes Appropriate for modelling using NURBS enhanced Finite Element Scheme. (2nd Supervisor: Dr Ruben Sevilla)
  • 2013 - Multiscale Modelling of Composites and Multilayers for EMC applications (2nd Supervisor: Professor Kenneth Morgan)
  • 2012 - Compressible computational fluid dynamics for fluid structure interaction simulation (2nd Supervisor: Professor Kenneth Morgan)
  • 2011 - Cross-Flow separation: CFD Modellling & Experiments (2nd Supervisor: Professor Kenneth Morgan)
  • 2011 - Risk Analysis and Management for Organisational Sustainability in Digital Economy (2nd Supervisor: Dr Rajesh Ransing)
  • 2010 - Intelligent Transport services in a Digital Economy (2nd Supervisor: Dr Karol Kalna)
  • 2009 - 'Gradient Free Optimisation in Selected Engineering Applications' (2nd Supervisor: Professor Kenneth Morgan)
  • 2008 - 'The Development of the Marker and Cell Method for use with unstructured meshes' (2nd Supervisor: Professor Kenneth Morgan)
  • 2008 - 'Development of Numical Schemes to improve the efficiency of CFD Simulation of High Speed Viscous Aerodynamic Flows' (2nd Supervisor: Professor Kenneth Morgan)
  • 2008 - Fluid Structure Interaction of Structural Airbags (1st Supervisor: Dr Antonio Gil)
  • 2008 - Multimedia Ad hoc Networks : Design, QoS, Routing and Analysis (1st Supervisor: Dr Rashid Mehmood)
  • 2006 - Computational Multi scale simulation of implant for bone fracture repair (1st Supervisor: Professor Yuntian Feng)
  • 2006 - Developing scalable Middleware: Learning, a case study. (1st Supervisor: Dr Christopher Jobling)
  • 2005 - A Hybrid spectral element method for the Time Domain Solution of Wave Scattering Problems (1st Supervisor: Professor Kenneth Morgan)
  • 2005 - Low Reynolds number heat transfer prediction employing large Eddy Simulation for electronics geometrics (1st Supervisor: Professor Perumal Nithiarasu)
  • 2004 - Intelligent High Performance Distributed Visualisation (2nd Supervisor: Professor Nigel Weatherill)
  • 2004 - Finite Element Solution of the Boltzmann Equation for Rarefied Macroscopic Gas Flows (1st Supervisor: Professor Kenneth Morgan)
  • 2003 - A Partitioned Approach for the Solution of Three-Dimensional Time-Dimensional Time-Dependent Incompressible Fluid-Structure Interaction (2nd Supervisor: Professor Javier Bonet)
  • 2003 - A Mechanism for Creating Web Service Interface to Scientific Applications (2nd Supervisor: Professor Nigel Weatherill)
  • 2003 - CDF modelling of the heart (2nd Supervisor: Professor Kenneth Morgan)
  • 2003 - The Simulation of 3D Unsteady Incompressible Viscous Flows with Moving Boundaries on Unstructured Meshes (2nd Supervisor: Professor Kenneth Morgan)
  • 2002 - A locally conservative Galerkin (LCG) finite element method for conservation equations using the CBS scheme (1st Supervisor: Professor Perumal Nithiarasu)
  • 2001 - FE-Rigid Body simulation of impact stresses in human body (1st Supervisor: Professor Javier Bonet)
  • 2000 - Surface reconstruction
  • 2000 - Object orientated mesh adaptivity (1st Supervisor: Professor Nigel Weatherill)

EngD

  • 2011 - A multi-physic approach to the improvement and optimisation of manufacturing processes involving the mixing/interaction of fluids, by utilising Computational Fluid Dynamics (CFD) (2nd Supervisor: Dr Samuel Rolland)
  • 2011 - A multi-physic approach to the improvement and optimisation of manufacturing processes involving the mixing/interaction of fluids, by utilising Computational Fluid Dynamics (CFD) (2nd Supervisor: Professor Stephen Brown)

MRes

  • 2005 - Simulation of bone implant for femur fracture. (2nd Supervisor: Professor Yuntian Feng)
  • 2005 - Impact analysis of R/C/ structures (1st Supervisor: Professor Yuntian Feng)
  • 2004 - Mesh generatioh from medical images. (2nd Supervisor: Professor Yuntian Feng)
  • 2004 - Stability analysis of AVI for non linear dynamic systems. (1st Supervisor: Professor Yuntian Feng)
  • 2004 - Bone fracture in the femur: Numerical model with the inclusion of a gamma nail implant. (1st Supervisor: Professor Yuntian Feng)
  • 2004 - Stability analysis of MTS and AVI for linear dynamic systems. (1st Supervisor: Professor Yuntian Feng)

MSc

  • 2012 - 'Steel Fibre Reinforced Concrete for use in Flood Defence'
  • 2012 - 'A Study of the Reinforced Concrete Cantilever under a Pure Torsion'
  • 2011 - 'An Analysis of the Performance of a High-Order Stabilised Finite Element Method towards Simulating unsteady Gust-Aerofoil Interaction Problem' (1st Supervisor: Dr Ruben Sevilla)
  • 2010 - Experimental study in barcode technologies for marking and reading wire to aid the aircraft manufacturing processes
  • 2009 - Analysis of Reinforced Concrete Cylindrical Tanks on Elastic Foundations
  • 2009 - Investigation of Square Reinforced Concrete Water Tanks for Torsional Failure (1st Supervisor: Dr Antonio Gil)
  • 2007 - Finite Difference schemes for Black-Scholes and American Options (2nd Supervisor: Professor Kenneth Morgan)

Additional information

Awards and fellowship

  • MBE in 1998 for the contribution to the THRUST SSC Supersonic car
  • The Catherine Richards prize for the best paper of 1999 in Mathematics Today entitled ‘Why didn’t the supersonic car fly’
  • Fellow, Royal Academy of Engineering, 2012

 

Recent plenary and keynote lectures

  • ‘Parallel Mesh generation and Parallel Adaptive remeshing for Unsteady Flow’,  Second Workshop on Grid Generation for Numerical Computations, INRIA, 2007
  • ‘Parallel Mesh generation and Adaptation for Computational Fluid Dynamics’, 1st International Conference on Parallel, Distributed and Grid Computing for Engineering, Pecs, 2009
  • ‘Unstructured Meshes Generation for Co-volume Methods’, The Third International Workshop on Grid Generation for Numerical Computations, 2010
  • ‘Tailored unstructured meshes for efficient aerospace engineering simulations’, Meshing Roundtable, Paris, 2011.

Work history

  • Head of Civil and Computational Centre, College of Engineering, Swansea University, 2008-
  • Civil Engineering Program Director, College of Engineering, Swansea University, 2003 - 2007
  • Professor, College of Engineering, Swansea University, 2002 - 2003
  • Reader, Department of Civil Engineering, University of Wales Swansea, 2000 - 2002
  • Senior Lecturer, Department of Civil Engineering, University of Wales Swansea, 1997 - 2000
  • Lecturer, Department of Civil Engineering, University of Wales Swansea, 1994 - 1997
  • Principal Research Engineer, CDR Ltd, Innovation Centre, University of Wales Swansea,1989 - 1994
  • Assistant Lecturer, Department of Civil Engineering, University of Damascus, 1983 - 1985
  • Design Engineer, Wardeh Structural Design Ltd. Damascus, 1983 - 1985

Editorial Boards of Scientific Journals

  • Applied Mathematical Modelling (Associate Editor),  Elsevier
  • Advances in Engineering Software, Elsevier
  • International Journal of Aviation Technology, Engineering and Management

 

 

Recent funding awards

  • Platform Grant: ‘Advances in Mesh Generation’, EPSRC, 2006-2011
  • ADIGMA: ‘Adaptive Higher-Order Variational Methods for Aerodynamic Applications in Industry’, EU, 2006-2009  
  • ‘The Development of Unstructured Mesh Technology for Viscous High Speed Flows’, 2007-2010, EPSRC
  • ‘Improving the Efficiency of Industrial Mesh Generation Capability’, EADS, 2009-2011
  • ‘Computational Engineering in Insufficiency Fracture Modelling & Implant Design’, CIRP A4B, WAG,  2010-2013
  • FLAVIIR: Integrated programme of research in aeronautical engineering, EPSRC/BAE SYSTEMS 2004 2007