Dr Reza Mokhtarzadeh

Academic and Professional Qualifications

• BSc     Mechanical Engineering
• MSc     Thermal Power Engineering 
• DIC     Diploma of Imperial College
• PhD     Mechanical Engineering 
• CEng     Chartered Engineer 
• FIMechE     Fellow of the Institution of Mechanical Engineers
• FRAeS     Fellow of the Royal Aeronautical Society

Research Interests

Main current research activities and interests are in experimental and computational fluid dynamics and heat transfer of both fundamental and applied nature. The experimental research aims at achieving a better understanding of the physics of flow phenomena and also to obtain data for comparison with theory. Computational Fluid Dynamics absorbs a significant portion of the research activity. Various studies in this area are concerned with the application of CFD codes and validation of existing turbulence models and numerical schemes, and also to obtain a better understanding of practical fluid flows. The main areas are:

• Fundamental studies of turbulent shear layers including experimental studies of turbulent boundary layers on curved surfaces, free shear layers subjected to streamline curvature and pressure gradient, and coherent structures.
• Internal flows, in particular flows in bends, valves and engineering equipment.
• Building aerodynamics and heat transfer, mixed and free convection, air flows between zones of buildings, in stairwells, through openings and cracks, around buildings and single-side ventilation.
• Environmental flows such as dispersion of plumes into atmosphere and associated chemical reactions.
• Biomedical applications including arterial blood flow and flow through pumps and other devices aim at improving design and performance.

Teaching

• Fluid Dynamics
• Aircraft aerodynamics
• Vehicle Aerodynamics
• Computational Fluid Dynamics

Publications

Journal Papers

(2012) Mokhtarzadeh-Dehghan, MR., Akcayoglu, A. and Robins, AG., Numerical study and comparison with experiment of dispersion of a heavier-than-air gas in a simulated neutral atmospheric boundary layer, Journal of Wind Engineering & Industrial Aerodynamics 110 10- 24

(2011) Mokhtarzadeh-Dehghan, MR., Numerical simulation and comparison with experiment of natural convection between two floors of a building model via a stairwell, International Journal Heat and Mass Transfer 54 19- 33

(2010) Farsimadan, E. and Mokhtarzadeh-Dehghan, MR., An experimental study of the turbulence quantities in the boundary layer and near-wake of an airfoil placed at upstream of a 90 degrees bend, Experimental Thermal and Fluid Science 34 979- 991

(2008) Farsimadan, E. and Mokhtarzadeh-Dehghan, MR., A large eddy simulation of an airfoil turbulent wake subjected to streamwise curvature, International Journal for Numerical Methods in Fluids 56 (8) : 1233- 1240 Download publication

(2007) Mokhtarzadeh-Dehghan, MR., Natural convection between two floors of a building via a horizontal opening: measurements in a one-half scale model, International Journal of Heat and Mass Transfer 50 (15-16) : 3141- 3151

(2006) Mokhtarzadeh-Dehghan, MR., König, CS. and Robins, AG., Numerical study of single and two interacting turbulent plumes in atmospheric cross flow, Atmospheric Environment 40 (21) : 3909- 3923

(2006) Baldock, N. and Mokhtarzadeh-Dehghan, MR., A study of solar-powered, high-altitude unmanned aerial vehicles, Aircraft Engineering and Aerospace Technology 78 187- 193

(2006) Mokhtarzadeh-Dehghan, MR. and Piradeepan, N., Numerical prediction of a turbulent curved wake and comparison with experimental data, International Journal for Numerical Methods in Fluids 51 (1) : 49- 76

(2005) Piradeepan, N. and Mokhtarzadeh-Dehghan, MR., Measurements of mean and turbulence quantities in the curved wake of an airfoil, Experimental Thermal and Fluid Science 29 (2) : 239- 252

(2002) Mokhtarzadeh-Dehghan, MR. and Yuan, YM., Measurements of turbulence quantities and bursting period in developing turbulent boundary layers on the concave and convex walls of a 90° square bend, Experimental Thermal and Fluid Science 27 (1) : 59- 75

(2002) König, CS. and Mokhtarzadeh-Dehghan, MR., Numerical study of buoyant plumes from a multi-flue chimney released into an atmospheric boundary layer, Atmospheric Environment 36 (24) : 3951- 3962

(2001) Bornoff, RB. and Mokhtarzadeh-Dehghan, MR., A numerical study of interacting buoyant cooling-tower plumes, Atmospheric Environment 35 (3) : 589- 598

(2000) Natarajan, S. and Mokhtarzadeh-Dehghan, MR., A numerical and experimental study of periodic flow in a model of a corrugated vessel with application to stented arteries, Medical Engineering and Physics 22 (8) : 555- 566

(2000) Natarajan, S. and Mokhtarzadeh-Dehghan, MR., Numerical prediction of flow in a model of a (potential) soft acting peristaltic blood pump, International Journal for Numerical Methods in Fluids 32 (6) : 711- 724

(1999) König, CS., Clark, C. and Mokhtarzadeh-Dehghan, MR., Comparison of flow in numerical and physical models of a ventricular assist device using low- and high-viscosity fluids, Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine 213 (5) : 423- 432

(1999) König, CS., Clark, C. and Mokhtarzadeh-Dehghan, MR., Investigation of unsteady flow in a model of a ventricular assist device by numerical modelling and comparison with experiment, Medical Engineering and Physics 21 (1) : 53- 64

(1999) Yuan, YM. and Mokhtarzadeh-Dehghan, MR., Parameter effects on detection of coherent structures in turbulent boundary layers using conditional sampling methods, Fluid Dynamics Research 25 (2) : 87- 112

(1998) Mokhtarzadeh-Dehghan, MR., Yu, L. and Stephen, DJ., A numerical study of turbulent flow through a variable area orifice meter, International Journal of Computer Applications in Technology 11 (3-5) : 271- 280

(1998) König, CS., Clark, C. and Mokhtarzadeh-Dehghan, MR., Flow in a model of a ventricular assist device - Numerical and experimental results, American Society of Mechanical Engineers, Bioengineering Division (Publication) BED 39 83- 84

(1997) Mokhtarzadeh-Dehghan, MR., Ladommatos, N. and Brennan, TJ., Finite element analysis of flow in a hydraulic pressure valve, Applied Mathematical Modelling 21 (7) : 437- 445

(1995) Ergin-Özkan, S., Mokhtarzadeh-Dehghan, MR. and Reynolds, AJ., Experimental study of natural convection between two compartments of a stairwell, International Journal of Heat and Mass Transfer 38 (12) : 2159- 2168

(1995) MOKHTARZADEHDEHGHAN, MR., ERGINOZKAN, S. and REYNOLDS, AJ., NATURAL-CONVECTION BETWEEN 2 COMPARTMENTS OF A STAIRWELL - NUMERICAL PREDICTION AND COMPARISON WITH EXPERIMENT, NUMERICAL HEAT TRANSFER PART A-APPLICATIONS 27 (1) : 1- 17

(1994) Yuan, YM. and Mokhtarzadeh-Dehghan, MR., A comparison study of conditional-sampling methods used to detect coherent structures in turbulent boundary layers, Physics of Fluids 6 (6) : 2038- 2057

(1994) Mokhtarzadeh-Dehghan, M., A finite element study of heat and fluid flow through a skirting heater, Indoor Environment 3 341- 352

(1993) Ergin-Özkan, S., Mokhtarzadeh-Dehghan, MR. and Reynolds, AJ., The effect of different air inlet sizes on the air flow through a stairwell, Indoor Environment 2 (5-6) : 350- 359

(1992) Mokhtarzadeh-Dehghan, MR., Ward-Smith, AJ. and Walker, RN., Study of laminar air flow through cracks by numerical solution of the differential equations, International Journal for Numerical Methods in Fluids 14 (12) : 1485- 1496

(1990) Zohrabian, AS., Mokhtarzadeh-Dehghan, MR. and Reynolds, AJ., Buoyancy-driven air flow in a stairwell model with through-flow, Energy and Buildings 14 (2) : 133- 142

(1990) Mokhtarzadeh-Dehghan, MR., El Telbany, MMM. and Reynolds, AJ., Transfer rates in single-sided ventilation, Building and Environment 25 (2) : 155- 161

(1989) Zohrabian, AS., Mokhtarzadeh-Dehghan, MR., Reynolds, AJ. and Marriott, BST., An experimental study of Buoyancy-driven flow in a half-scale stairwell model, Building and Environment 24 (2) : 141- 148

(1988) Kotb, NAE., Mokhtarzadeh-Dehghan, MR. and Ward-Smith, AJ., Numerical study of laminar and turbulent flows in a two-dimensional bend with or without a guide vane, International Journal for Numerical Methods in Engineering 26 (1) : 245- 262

(1988) Reynolds, AJ., Mokhtarzadeh-Dehghan, MR. and Zohrabian, AS., The modelling of stairwell flows, Building and Environment 23 (1) : 63- 66

(1986) Mokhtarzadeh-Dehghan, MR. and El-Shirbini, AA., Dynamics of and heat transfer to a butane droplet evaporating in water, Wärme- und Stoffübertragung 20 (1) : 69- 75

(1985) Mokhtarzadeh-Dehghan, MR. and El-Shirbini, AA., Dynamics of two-phase bubble-droplets in immiscible liquids, Wärme- und Stoffübertragung 19 (1) : 53- 59

(1985) El Telbany, MMM., Mokhtarzadeh-Dehghan, MR. and Reynolds, AJ., Single-sided ventilation - Part I. The flow between a cavity and external air stream, Building and Environment 20 (1) : 15- 24

(1985) El Telbany, MMM., Mokhtarzadeh-Dehghan, MR. and Reynolds, AJ., Single-sided ventilation - Part II. further considerations, Building and Environment 20 (1) : 25- 32

(1979) Mokhtarzadeh, MR., A theoretical study of evaporating droplets in an immiscible liquid, International Journal of Heat and Mass Transfer 20 27- 38

(1979) Mokhtarzadeh, MR. and El-Shirbini, AA., Motion of bubbles and bubble-droplets in an immiscible liquid, Wärme- und Stoffübertragung 12 (1) : 25- 33