Expert Details

Expert in Computational Fluid Dynamics

Expert ID: 730498 United Kingdom

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• Over 25 years of experience in the CFD and heat transfer analysis of turbine blade cooling, polymer processing, building aerodynamics, building ventilation, automotive components and systems design and under hood airflow for off highway vehicles.
• An in-depth knowledge of finite element methods used in the development of an academic CFD code written in FORTRAN 77, together with extensive experience of a number of commercial mesh generation software packages (such as PROSTAR, PRO-AM, ICEM-CFD, HYPERMESH, TGRID including its shrink wrapped capability), three dimensional CFD codes (such as STAR-CD, FLOVENT /FLOTHERM and FLUENT), two/three dimensional thermal simulation codes such (RadTherm), one dimensional engine performance simulation codes (such as Ricardo’s WAVE) and one dimensional machine cooling simulation codes (such as Caterpillar’s Cool-1).
• Developed a PATENT based on the optimized design of a pull-over Fuel Jet Pump that significantly improved its "efficiency" or mass flow ratio (by over 50%).
• Appointed as the External Ph.D. Examiner by the Chemical Engineering Faculty Board of Loughborough University of Technology, in June 2007.
• Fully trained and successfully graduated as a Six Sigma (DMAIC) Black Belt in May 2009.
• Developed “An Introduction to Computational Fluid Dynamics (Z1305)” on-line course for ASME which has been taught five times a year since January 2010.
• Author of “2nd NAFEMS workbook of CFD Examples” to be published by NAFEMS (National Agency for Finite Element Methods and Standards) in 2012.


External airflow analysis of the Tesco superstore in Kensington UK; Using STAR-CD SoftwareDesign Optimization of Jaguar's X400 fuel jet pump; Leading the development of a PATENT based on the optimized design of a pull-over fuel jet pump. The new improved design has significantly improved the "efficiency" of the jet pump (by just over 50%) and removed the possibility of it stalling, under low fuel level condition; Using ICEM-CFD and FLUENT software.Fin geometry optimization of the supercharger unit on the Visteon Torque Enhancement System (VTES); The new optimized design has improved the convective heat transfer rate by 20%; Using ICEM-CFD and FLUENT software.Airflow and thermal comfort analysis within the GlaxoWellcome Headquarters building in Greenford; Using FLOVENT softwareOptimization of temperature and EGR (Exhaust Gas Recirculation) concentration distribution within Volvo I5, Ford Puma and Honda Civic air intake manifolds; The optimized design reduces the maximum surface temperature of the intake manifold to less than 150oC, thus enabling the intake manifold design to be made out of plastic material saving on both weight and cost; Using ICEM-CFD and FLUENT software.

Education

Year Degree Subject Institution
Year: 1987 Degree: P.hD. Subject: Mechanical Engineering Institution: King's College, University of London
Year: 1982 Degree: B.Sc. (Eng.) Subject: Mechanical Engineering Institution: King's College, University of London

Work History

Years Employer Title Department Responsibilities
Years: 2008 to Present Employer: Undisclosed Title: Engineering Design Specialist Department: Aftertreatment and Cooling Products Responsibilities: Responsible for the CFD activities of the Machine Cooling Systems Division, technically managing a team of CFD engineers and performing thermal Under hood (using RadTherm) and CFD simulation of the next generation of Caterpillar machines (using Fluent) designed to meet the required emission standards.
Example of Design Projects:
a) Design optimization of exit grill and radiator guard geometry for D6K2 Track-type Tractor, by minimizing undesirable air recirculation from the cooling fan towards the cooling cores; Using ICEM-CFD and FLUENT.
b) Full under hood airflow analysis of 740 Articulated Truck; Using ICEM-CFD and FLUENT.
c) An ongoing research study in modeling nucleate boiling phenomena; Using ICEM-CFD and FLUENT.
d) Design optimization of the under hood environment for 730 Articulated Truck based on full airflow and thermal CFD analysis; Using FLUENT
Years: 1997 to 2008 Employer: Ford Motor Company/Visteon UK Title: CFD Technical Specialist Department: Powertrain Systems Division Responsibilities: Responsible for the CFD activities of the Powertrain Systems Division and managing a team of CAE engineers for two years. Using CFD related software packages, conduct fluid flow related performance evaluation and hence design optimization of a wide variety of automotive components, including throttle bodies, air intake manifolds, water pumps, oil pumps, defrosting ducts, air induction systems, fuel jet pumps, carbon canisters, charged air coolers etc. Liaised with all team members at appropriate intervals, prepared and presented the final technical report, within the agreed time and cost constraints.

Examples of Design projects:
a) CFD studies of air distribution within CYRUS and NIMBUS IAFM intake manifolds both associated with the Sigma 1.6 liter engine; Using the one dimensional engine performance simulation code WAVE, for providing boundary conditions for STAR-HPC, to predict, under transient conditions, the percentage of the airflow through each runner during one full engine cycle, as the cylinders intake valves open and close at their appropriate crankshaft angles.
b) CFD investigation of the stall condition in Jaguar's X400 fuel jet pump; Using HYPERMESH, PRO-AM and transient two phase flow VOF analyses in STAR-HPC.
c) Design Optimization of Jaguar's X400 fuel jet pump; Leading the development of a PATENT based on the optimized design of a pull-over fuel jet pump. The new improved design has significantly improved the "efficiency" of the jet pump (by just over 50%) and removed the possibility of it stalling, under low fuel level condition; Using ICEM-CFD and FLUENT.
d) Design optimization of a book-shelved Carbon Canister; Leading the development of a PATENT based on the optimized design of carbon canister ports and the ribs supporting the filter elements; Using ICEM-CFD and FLUENT.
e) Optimization of temperature and EGR (Exhaust Gas Recirculation) concentration distribution within Volvo I5, Ford Puma and Honda Civic air intake manifolds; The optimized design reduces the maximum surface temperature of the intake manifold to less than 150oC, thus enabling the intake manifold design to be made out of plastic material saving on both weight and cost; Using ICEM-CFD and FLUENT.
f) Fin geometry optimization of the supercharger unit on the Visteon Torque Enhancement System (VTES); The new optimized design has improved the convective heat transfer rate by 20%; Using ICEM-CFD and FLUENT.
g) Pressure loss prediction and hence minimization across various Air Induction Systems related to engine programs such as Ford C1 Lynx, Land Rover L359 & L316, Audi C6S, Toyota Yaris, Chrysler JC49 etc...; Developed appropriate boundary conditions/modeling practice set ups in order to obtain close correlation with corresponding experimental tests; Using ICEM-CFD and FLUENT.
h) CFD investigation on time variation of damping coefficient at the high speed rotating surface of a new and innovative damping device; Using HYPERMESH and FLUENT and based on the extensive use of Dynamic Mesh (layering and Spring smoothing methods), Sliding Mesh and User Defined Functions.
i) CFD prediction of water droplet particle tracking within Ford T6 and Audi C7 air cleaner boxes; Using Discrete Particle Modeling module of FLUENT; This predictive tool was used to incorporate appropriate design features within each air cleaner box to minimize water migration to engine cylinders.
Years: 1994 to 1997 Employer: BSRIA (Building Services Research And Information Association) Title: Principal Research Engineer Department: Microclimate Centre Responsibilities: Was responsible for the CFD activities of the Microclimate Centre at BSRIA, mainly focusing on the design evaluation and hence optimization of a wide variety of ventilation systems in buildings.

Responsibilities included conducting the full CFD analysis of airflow together with the preparation of proposals and project plan, break down of the costs, monitoring of the work schedule through full CFD analysis of airflow, documentation of the technical report and achievement of the time and cost targets with a proven profit record for each project.

Examples of Consultancy projects:
a) Migration of tobacco smoke; Using FLOVENT to assess the effect of alternative ventilation strategies and space partitioning in minimizing the migration of tobacco smoke in public buildings.
b) External airflow analysis of the Tesco superstore in Kensington; Using STAR-CD.
c) The effect of perimeter heating on cold downdraughts; Using FLOVENT.
d) Airflow and thermal comfort analysis within the GlaxoWellcome Headquarters building in Greenford; Using FLOVENT.
e) The effect of displacement ventilation and chilled beam on tobacco smoke concentration within Rothmans International building; Using FLOVENT.

Example of Research projects:
a) Air distribution in naturally ventilated buildings:
Identified the influential parameters, devised a plan, and embarked on a comprehensive parametric study of the performance characteristics of single-sided windows in office buildings, using CFD (FLOVENT and STAR-CD). Provided design guidance on the use and limitations of natural ventilation through various types of windows, in satisfying the appropriate thermal comfort criteria, for office occupants.
Years: 1991 to 1994 Employer: University of Technology - Loughborough, UK Title: Post-doctoral Research Assistant Department: Department of Chemical Engineering Responsibilities: Expert developed an academic CFD software package in FORTRAN 77 to solve the two dimensional Navier- Stokes, Darcy (porous media), energy/turbulent kinetic energy, concentration/degradation and streamline equations and to predict the flow pattern and the associated phenomena for a wide variety of scientific and industrial problems in fluid mechanics and heat transfer. The solution techniques were based on various Finite Element methods including: Galerkin, Petrov-Galerkin, and Least Square. In order to model the viscoelastic behavior of the rubber compound within a mixer, the suitability of various non-Newtonian constitutive equations were investigated through the options of power-law, Carreau, Maxwell, Oldroyd-B and Phan-Thien-Tanner models. In order to predict the free surface position of the rubber compound in the vicinity of a mixer blade under transient conditions, a pseudo-concentration approach was incorporated within the code.
Years: 1986 to 1991 Employer: University College of Swansea - Swansea, UK Title: Post-doctoral Research Assistant Department: Department of Mechanical Engineering Responsibilities: Devised and ran an experimental program on an existing rig for the purpose of finding the effects of coriolis and buoyancy forces as well as Reynolds Number on the variations of heat transfer coefficient of air flowing along smooth and ribbed pipes of different cross sectional shapes.

Data acquisition and processing programs (written in BASIC and FORTRAN) were developed and practical design correlations were derived from the analysis of the results. A commercial CFD package (FLUENT-UNS) was used to simulate the experimental results.

Liaised with clients and sponsoring organizations regarding numerical results and further development work.

Career Accomplishments

Professional Appointments
• Appointed as the External Ph.D. Examiner by the Chemical Engineering Faculty Board of Loughborough University of Technology, in June 2007.
Publications and Patents Summary
• Developed a PATENT based on the optimized design of a pull-over Fuel Jet Pump that significantly improved its "efficiency" or mass flow ratio (by over 50%), June 2004.

• Author of “2nd NAFEMS workbook of CFD Examples” to be published by NAFEMS (National Agency for Finite Element Methods and Standards) in 2012.

Fields of Expertise

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