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)

  • Gallegos, R. K. B., & Sharma, R. N. (2019). Small flags in rectangular channels: Dynamics and mean wake characteristics. International Journal of Mechanical Sciences, 155, 518-535. 10.1016/j.ijmecsci.2019.02.033
  • Gallegos, R. K. B., & Sharma, R. N. (2019). Heat transfer performance of flag vortex generators in rectangular channels. International Journal of Thermal Sciences, 137, 26-44. 10.1016/j.ijthermalsci.2018.11.001
    URL: http://hdl.handle.net/2292/45987
  • Krishan, G., Aw, K. C., & Sharma, R. N. (2019). Synthetic jet impingement heat transfer enhancement - A review. APPLIED THERMAL ENGINEERING, 149, 1305-1323. 10.1016/j.applthermaleng.2018.12.134
    Other University of Auckland co-authors: Kean Aw
  • Itsariyapinyo, P., & Sharma, R. N. (2019). Spectral Analysis of Unsteady Shear Flows over a Rounded-Trailing-Edge Airfoil. JOURNAL OF AIRCRAFT, 56 (1), 398-402. 10.2514/1.C034813
    Other University of Auckland co-authors: Pititat Itsariyapinyo
  • Giovannoni, V., Sharma, R. N., & Raine, R. R. (2019). Experimental Investigation of a Small-Scale Combustion Chamber Fuelled with Vegetable Oil. Combustion Science and Technology10.1080/00102202.2019.1565492
  • Abdollahi, A., Mohammed, H. A., Vanaki, S. M., & Sharma, R. N. (2018). Numerical investigation of fluid flow and heat transfer of nanofluids in microchannel with longitudinal fins. AIN SHAMS ENGINEERING JOURNAL, 9 (4), 3411-3418. 10.1016/j.asej.2017.05.011
  • Itsariyapinyo, P., & Sharma, R. N. (2018). Large Eddy simulation of a NACA0015 circulation control airfoil using synthetic jets. AEROSPACE SCIENCE AND TECHNOLOGY, 82-83, 545-556. 10.1016/j.ast.2018.09.039
    Other University of Auckland co-authors: Pititat Itsariyapinyo
  • Gallegos, R. K. B., & Sharma, R. N. (2018). FLOW CHARACTERISTICS OF A NARROW RECTANGULAR CHANNEL EQUIPPED WITH A FLAPPING FLAG. Paper presented at ASME International Mechanical Engineering Congress and Exposition, Tampa, FL. 3 November - 9 November 2017. PROCEEDINGS OF THE ASME INTERNATIONAL MECHANICAL ENGINEERING CONGRESS AND EXPOSITION, 2017, VOL 7. (pp. 11).


Contact details

Alternative contact

Primary office location

BUILDING 902 - Bldg 902
Level 4, Room 411
New Zealand

Web links