Dr Rajnish N Sharma

PhD (Fluid dynamics) - Auckland; BE Hons 1st Class - Auckland


Dr Rajnish Sharma is a Senior Lecturer in the Department of Mechanical Engineering, the University of Auckland, specialising in the subject areas of Aerodynamics, Fluid Dynamics, Heat Transfer, Thermodynamics, and their application. He has been an academic here since August 2001, and became a permanent member of staff in 2007.

His academic career commenced at the Fiji National University (formerly Fiji Institute of Technology), and later, he joined the University of the South Pacific (USP) in Suva, Fiji, as a Lecturer in Mechanical Engineering. After completing a PhD in Fluid Dynamics / Wind Engineering at the University of Auckland in 1996, on a USP-NZ Government Fellowship, he returned to USP and helped with the accreditation of a new Bachelor of Engineering Technology degree programme (curriculum development, lab development) and setting up / commencing a Postgraduate Programme of Study before migrating to NZ in July 2001.

Since 2008, Dr Sharma has supervised 6 PhD’s and several ME’s to completion, and is currently mentoring 13 more PhD’s as principal supervisor, and several others as co-supervisor.

He currently serves as the Academic Head of the new Thermofluids Laboratory at Newmarket campus, and, represents the Department on the Faculty Equity Committee. He has previously served on many significant committees of the Department, Faculty and the University (both at USP and the UOA).

Over the years, Dr Sharma has developed collaboration with several industries and research institutes, and regularly provides consulting services to clients from outside of the University. He has also served on organising and scientific committees of several international conferences over the years.

Research | Current

His research utilises computational (cfd) and experimental methods, and, include (but not limited to) the following: Unsteady aero-fluid dynamics of lifting surfaces at low Reynolds numbers (UAV wings, turbine blades); Unsteady hydrodynamics of tidal turbines; Aerodynamic analysis of novel wind turbine systems; Wind engineering and building aerodynamics; Pesticide spray drift; Industrial fluid mechanics; Synthetic and continuous jet flow turbulence, interactions, and their impingement fluid/thermal/heat transfer dynamics; Ultra micro gas turbine (UMGT) systems (micro-combustor, micro-turbine); Micro fluidics and micro combustion; Micro scale thermal management technologies; Industrial theral-fluid dynamics; Natural and wind induced ventilation; and more.

See more at: http://www.engineers.auckland.ac.nz/~rsha020/

Teaching | Current

Dr Sharma has taught across the different areas of Mechanical Engineering over the years but his current teaching spans across the thermofluids suite of courses including Mecheng211 Thermofluids, Mecheng311 Thermal Engineering, Mecheng325 Dynamics of Fluids and Structures, Mecheng711 Computational Fluid Dynamics, Mecheng712 Aerohydrodynamics, Mecheng713 Energy Technology, and Mecheng715 Building Services. He also coordinates and teaches in the Final Year Projects courses (Mecheng762 and 763) in the Department of Mechanical Engineering.

Postgraduate supervision

As principal supervisor (since 2008):

  • 6 PhDs completed
  • 13 PhDs currently in progress
  • Several MEs completed

As co-supervisor (since 2008):

  • Several PhDs in progress




  • Final year projects coordinator
  • Academic Head, Thermofluids Laboratory
  • Member, Faculty Equity Committee
  • Course Director, Several courses in the Department of Mechanical Engineering


  • Convenor of the Thermofluids Teaching Group
  • Member of the Faculty Timetabling Committee

Areas of expertise

Aerodynamics, Fluid dynamics, Fluid mechanics, Heat transfer, Thermal-fluid systems, Wind engineering, Turbulence, CFD modelling, Wind energy and wind turbines, Tidal turbines, HVACR, Building services, Jet flows, Impingement heat Transfer, 

Selected publications and creative works (Research Outputs)

  • Giovannoni, V. G., Sharma, R. N., & Raine, R. R. (2017). Numerical prediction of thermal performances in a concentric triple tube heat exchanger. International Journal of Thermal Sciences, 120, 86-105. 10.1016/j.ijthermalsci.2017.06.003
    Other University of Auckland co-authors: Robert Raine
  • Abdollahi, A., Sharma, R. N., Mohammed, H. A., & Vatani, A. (2017). Heat transfer and flow analysis of Al 2 O 3 -Water nanofluids in interrupted microchannel heat sink with ellipse and diamond ribs in the transverse microchambers. Heat Transfer Engineering, 0-0. 10.1080/01457632.2017.1379344
  • Gallegos, R. K. B., & Sharma, R. N. (2017). Flags as vortex generators for heat transfer enhancement: Gaps and challenges. Renewable and Sustainable Energy Reviews, 76, 950-962. 10.1016/j.rser.2017.03.115
  • Turkeli-Ramadan, Z., Sharma, R. N., & Raine, R. R. (2017). Experimental Study on Flat Flame Combustion for Ultra Micro Gas Turbine Applications. Combustion Science and Technology, 189 (8), 1307-1325. 10.1080/00102202.2017.1294588
  • Milne, I. A., Sharma, R. N., & Flay, R. G. J. (2017). The structure of turbulence in a rapid tidal flow. Proceedings of the Royal Society A: Mathematical, Physical and Engineering Science, 473 (2204), 20170295-20170295. 10.1098/rspa.2017.0295
    Other University of Auckland co-authors: Richard Flay
  • Abdollahi, A., Sharma, R. N., & Vatani, A. (2017). Fluid flow and heat transfer of liquid-liquid two phase flow in microchannels: A review. International Communications in Heat and Mass Transfer, 84, 66-74. 10.1016/j.icheatmasstransfer.2017.03.010
    URL: http://hdl.handle.net/2292/34010
  • Prasad, D. D., Ahmed, M. R., Lee, Y.-H., & Sharma, R. N. (2017). Validation of a piston type wave-maker using Numerical Wave Tank. Ocean Engineering, 131, 57-67. 10.1016/j.oceaneng.2016.12.031
    URL: http://hdl.handle.net/2292/32508
  • Gallegos, R. K. B., & Sharma, R. N. (2017). Flow characteristics of a narrow rectangular channel equipped with a flapping flag. ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE). 10.1115/IMECE2017-70291


Contact details

Alternative contact

Primary location

Level 10, Room 1005
New Zealand

Web links