Department of Mechanical Engineering                                             (Updated 10 October 2016)

 

 

 

E-mail me

 

 

Senior Lecturer

 

PHD/ME SCHOLARSHIPS

 

RESEARCH STUDENTS

 

BE FYP / MEngStu X-Y-Z / INTERN PROJECTS

 

RESEARCH OPPORTUNITIES

 

RESEARCH OVERVIEW

 

FACILITIES / TOOLS

 

GRANTS

 

CONSULTING

 

COLLABORATION

 

PUBLICATIONS

 

OTHER ACTIVITIES

 

IN THE NEWS

 

 

FISCHER (PhD)

 

 

GUHA (PhD)

 

 

 

SHIM (PhD)

 

 

 

IMRAAN (PhD)

 

 

 

MILNE (PhD)

 

 

 

TURKELI-RAMADAN (PhD)

 

 

 

 

Dr Rajnish N Sharma                                                                                              

PhD Auck, BE(1st Class Hons) Auck

MAIAA, MASHRAE, MASME, MAWATEA,

 

   CLICK HERE FOR MORE INFORMATION  ! 

   CLICK HERE FOR RESEARCH OPPORTUNITIES  !

CONTACT

         PHONE:     (+64 9) 923 8144 [DIRECT]       Ext 88144 [INTERNAL]

         EMAIL:       r.sharma@auckland.ac.nz

         OFFICE:    Faculty of Engineering Building, 20 Symonds St, City Campus, and, Building 901, Newmarket Campus

         POSTAL:   Mechanical Engineering Department, The University of Auckland, Private Bag 92019, Auckland, New Zealand

ROLE / TEACHING/OTHER

       AREAS, THERMOFLUIDS TEACHING GROUP:

Fluid Mechanics, Aero, Heat Transfer, Mass Transfer, Thermo, Energy, CFD.

       TEACHING:

o    MechEng 211 Thermofluids, MechEng 311 Thermal Engineering, MechEng 712 AeroHydroDynamics,

o    MechEng 713 Energy Technology, MechEng 715 Building Services,  MechEng 731 Engineering design 4M

o    MechEng 700 Research project (Project Coordinator)

       COMMITTEE / SERVICE:

o   Academic Head, Thermofluids Laboratory

o   Member, University of Auckland Pacific Reference Group (PRG)

o   Course coordination

RESEARCH OVERVIEW

       GENERAL AREAS OF INTEREST:

Fluid Mechanics, Aerodynamics, Heat Transfer, Mass Transfer, Thermodynamics, Energy

Applications of Experimental and Computational fluid dynamics (CFD) techniques

       SPECIFIC AREAS:

o   UAV aerodynamics in extreme weather conditions; Flow control

o   Unsteady hydrodynamics of tidal stream turbines

o   Micro scale thermal management (Jet, synthetic jets, heat pipes, oscillating reeds, etc.)

o   Pesticide spray drift and mitigation (With Lincoln Agritech)

o   Ultra micro gas turbine research (combustor, turbomachinery, bearings)

o   Aerodynamics / Industrial Fluid Mechanics / Vehicle aerodynamics

o   CFD (modelling of flows and flow visualisation).

o   Renewable Energy (Tidal, Wind, Energy conversion & conservation).

o   Ventilation; Refrigeration, Air conditioning;  Industrial / process fluid, heat and mass transfer

o   Wind engineering (turbulence buildings-bluff-body aerodynamics, resonance).

       RESEARCH GROUP MEMBERSHIP                                                          LABORATORY AFFILIATION

o   Thermofluids Research                                                                           Thermofluids Laboratory

o   Yacht and Wind Engineering Research Group                                       Aerodynamics – Wind Tunnel Laboratories

o   Computational Fluid Dynamics (CFD) Research Cluster                      The CFD – Modelling and Visualisation Lab

RESEARCH STUDENTS

o   PRINCIPAL SUPERVISOR TO PHD CANDIDATES

Name

Start date

Status

Thesis title

Current role

A Narula

Oct 2016

Current

Solar refrigeration system

 

N L Oo

Sep 2016

Current

Ice accretion on UAV wings

 

S Sahadevan

Sep 2016

Current

Techno-economic analysis of hybrid renewable energy systems

 

D  Stanojevic

Sep 2016

Current

Icing on wind turbine blades

 

C K Kasinadhuni

Sep 2016

Current

Ducted wind turbines

 

G Krishan

Jul 2016

Current

Synthetic jet application to refrigeration systems for heat transfer enhancement

 

C Steinberg

Feb 2016

Current

Unsteady hydrodynamics of tidal turbines to seabed and wave turbulence

 

A Abdollahi

Dec 2015

Current

Fluid flow and heat transfer characteristics of nanofluids in microchannels

 

P S Kathait

Jul 2015

Current

Behaviour of micro scale pulsating heat pipes under operating conditions

 

R D’Souza

May 2015

Current

Understanding the losses in a turbine for a ultra micro gas turbine (UMGT)

 

R Gallegos

Mar 2015

Current

Heat transfer enhancement in micro channels using flags as vortex generators

 

R Wang

Aug 2014

Current

Influence of extreme turbulence on aerodynamic performance of UAV’s

 

P Itsariyapinyo

Jul 2014

Current

Directional control of small aircraft using synthetic jet circulation control

 

V Giovannoni

Jun 2014

Current

A regenerative micro-combustor for ultra micro gas turbines (UMGT)

 

Dr Z Turkeli-Ramadan

Jan 2011

Completed

The effects of preheating on the combustion characteristics of a micro combustor

Consultant, Auckland NZ

Dr I Milne

Mar 2009

Completed

An experimental investigation of turbulence and unsteady loading on tidal turbines

Research Fellow. UWA, Perth

Dr C Fischer

Mar 2009

Completed

The influence of the slot aspect ratio on the flow field of synthetic jets

ANSYS Berlin, Germany

Dr M Imraan

Mar 2008

Completed

Aerodynamic analysis of a wind turbine with telescopic blades

Entrepreneur, NZ / Fiji

Dr Y Shim

Feb 2008

Completed

Turbulent structures in the flow field of plane jet impinging on a circular cylinder

Res. Fellow Massey University

Dr T K Guha

Jan 2008

Completed

Internal pressure in low and medium rise buildings under high winds

Senior Engineer, CPP USA

o   CO - SUPERVISOR TO PHD CANDIDATES

Name

Start date

Status

Thesis title

Main supervisor / Current

H Devaraj

May 2014

Current

3D Printing of conducting micro-hair structures for ultra-low flow digital sensor

A/Prof Kean Aw

J Wang

Nov 2013

Current

Microfluidic device with IPMC actuator for drug delivery

A/Prof Kean Aw

DrY Chen

Mar 2011

Completed

Effect of H2 supplementation on performance, knock behaviour,

and emissions of an SI engine operating at lean air/fuel ratios; 

A/Prof Robert Raine / Now at MIT USA

Dr E Swery NZ

Mar 2012

Completed

Numerical prediction of complex fibre preforms, for enhanced

process modelling of advanced composite structures

A/Prof Piaras Kelly / Technical Consultant, IBM NZ

o   PRINCIPAL SUPERVISOR TO ME CANDIDATES

Name

Start date

Status

Thesis title

Current role

N Ha Tran

Mar 2016

Current

Modelling the unsteady hydrodynamic response of tidal turbines

On study leave from Vietnam

K Yajnanarayan

Mar 2014

Completed

Pressure and flow characteristics of oscillatory flow in orifice type constrictions

Mech Engineer, Downer, NZ

T Tu (Tom)

Jul 2013

Completed

Dynamic stall behaviour of the S814 foil under low and high Reynolds numbers

Research Engineer, Taiwan

I Singh

Mar 2012

Completed

Effect of variable resonator geometry on thermoacoustic refrigeration system

Mech Engineer, Auckland, NZ

A Bhangoo

Mar2012

Completed

Ill-defined parameters of the internal pressure dynamics of a low-rise building

Mech Engineer, Auckland, NZ

N Garg

Jul 2012

Completed

Synthetic jet impingement heat transfer

PhD candidate, NTU, Singapore

Dr M Imraan

Jul 2010

Completed

Influence of confining walls on jet impingement heat transfer - circular cylinder

Entrepreneur, NZ / Fiji

S K Siong

Jul 2010

Completed

Synthetic jet impingement on a circular cylinder

Senior Engineer, Malaysia

Dr S S P Rattan

Mar 2000

Completed

Tropical cyclone wind characteristics in Fiji (at the University of the South Pacific)

Academic, Uni.Alberta, Canada

o   CO - SUPERVISOR TO ME CANDIDATES

Name

Start date

Status

Thesis title

Main supervisor/ Current

A Trivedi

Mar 2009

Completed

Recyclable wind turbine blades

Prof D. Bhattacharyya / Mech Eng’r, Aurecon NZ

A Singh

Mar 2008

Completed

Temp. tracking thermal chamber using thermoelectric modules

Prof Shane Xie / Project Engineer, Rakon NZ

SOME RESEARCH FACILITIES / TOOLS

       PIV systems:  2D system; 3D stereoscopic system

       Wind tunnels and flumes:

o   Closed loop wind tunnel (boundary layer, or clean air) with traversing rigs and turntable, 3 m x 2 m section

o   Twisted Flow, 7m x 3.5m adjustable to 3.5m x 3.5m, for wind turbines, UAV’s, yacht, sails, vehicle and general aerodynamic studies at large scale

o   Small Wind Tunnel (<15m/s) for aerodynamics studies

o   Access to wave and conventional flumes in the Fluids Laboratory, CEE

       Probes:  Cobra probes; HWA, thermocouples and humidity sensors, other e.g. ADV’s

       Cameras: Thermal imaging, high speed, etc.

       CFD Tools and Resources: NeSI HPC cluster;  ANSYS CFX and FLUENT, Other

       Vehicle and engine test cells with dynamometers

       Environmental test chambers x 2, Contherm desktop chanber

       Rigs for fundamental and applied research:  Continuous jet rigs, for air and water studies; Synthetic jet rigs; Flat flame combustor;  micro scale heat transfer apparatus; Refrigerators; Wind and tidal turbines, instrumented telescopic and conventional blades; Other

RESEARCH ACTIVITIES AND FUNDING – Some information to be updated from here onwards

PROJECT

FUNDING

FROM

Agricultural sprays

 

LAL

Fundamentals and Applications of Synthetic Jets

$83,000

UARC + VCUDF

Jet turbulence, Impingement, Fluid Dynamics, Heat Transfer

$19,000pa x 1.5y

GFSS

Ultra Micro Gas Turbine HEX Combustor

$84,000

NZG IDS

Resin Flow Modelling In Complex Fibre Preforms

$75,000

UOA-DS

Smart Wind Turbines (jointly with Dr U Madawala)

$30,000

$75,000

UARC

UOA-DS

Tidal Turbines, influence of tidal flow unsteadiness

$84,000

FRST TADS

Wind Engineering (Aerodynamics of bluff-body cavities with an opening, Dynamics of Internal Pressure in Buildings, Turbulent Flows around Bluff-Bodies, Buildings, Wind loads on Low-Rise buildings, Wind characteristics)

$105,000

NZG + USP

Natural Ventilation for Healthy Homes

 

 

Aerodynamics of Road Vehicles

 

 

Industrial Thermo-Fluid Mechanics (Venturi Mixers, Pressure Swirl Nozzles, etc)

 

SCION, FELTONMIX

CONSULTING ACTIVITIES

I provide consulting and advise to various sections of the community (individuals, industry, other research organisations, businesses, developers,

and government departments) on matters such as wind opinions, modelling thermal and fluid flow problems, device testing, quality assurance of

testing procedures, system and component design, and research and development.

 

Some examples include:

       Dolphin Aqualisers Ltd, Wave Device Research and Development, Wave tank testing, Analytical modelling

       Fisher & Paykel Healthcare Ltd, Quality Assurance of Respirator Testing

       FeltonMix Ltd, CFD and Analytical Modelling / Development of Venturi Shower Mixers

       Property Developers (e.g. PlatyPus Group), Wind Opinion

       Fiji Government, Assessment of Provisions of the Fiji Building Code

COLLABORATION

       AGRICULTURAL SPRAYS:

Dr Scott Post, Scientist, Lincoln Agritech Ltd, Lincoln, New Zealand

       JET TURBULENCE:

Dr Young-min Shim,  Massey University.  Palmerston North,  New Zealand

Prof Andrew Pollard,  Queens University,  Kingston,  Ontario,  Canada

       WIND ENGINEERING / BUILDING INTERNAL PRESSURE DYNAMICS:

Associate Professor Peter Richards, Associate Professor, Mechanical Engineering Department, The University of Auckland, Auckland, New Zealand

Professor Richard Flay, Director, Yacht and Wind Research Unit (YWRU), The University of Auckland

Dr John Holmes, Director JDH Consulting and Editor – Wind and Structures – An International Journal

Dr Arindam Chowdhary, Director,  Laboratory for Wind Engineering Research (LWER), International Hurricane Research Center, Florida International University

Dr Girma Bitsuamlak,  Laboratory for Wind Engineering Research (LWER), International Hurricane Research Center, Florida International University

       SYNTHETIC JETS:

Professor Shinji Honami, Professor in Mechanical Engineering and Dean of Faculty of Engineering, Tokyo University of Science, Tokyo, Japan

       NOVEL WIND TURBINES:

Associate Professor Udaya Madawala, Senior Lecturer, Electrical and Computer Engineering Department, The University of Auckland, Auckland, New Zealand

       WIND TURBINE BLADE MATERIALS:

Professor Debes Bhattacharyya, Director, Centre for Advanced Composite Materials (CACM), The University of Auckland

       UNSTEADY HYDRODYNAMICS AND FATIGUE OF TIDAL TURBINE BLADES:

Professor Richard Flay, Director, Yacht and Wind Research Unit (YWRU), The University of Auckland

       COMBUSTION:

Associate Professor Robert Raine, Director, Energy and Fuels Research Unit (EFRU, The University of Auckland

SELECTED RECENT PUBLICATIONS

       Wang, J., Aw, K. C., McDaid, A., & Sharma, R. N. (2016). An Efficiency improved diffuser with extended sidewall for application in valveless micropump. Heat and Mass Transfer/Waerme- und Stoffuebertragung, 52 (4), 913-923.  

       Milne, I. A., Day, A. H., Sharma, R. N., & Flay, R. G. J. (2016). The characterisation of the hydrodynamic loads on tidal turbines due to turbulence. Renewable and Sustainable Energy Reviews, 56, 851-864. 10.1016/j.rser.2015.11.095 

       Wang, J., McDaid, A., Sharma, R., Yu, W., & Aw, K. C. (2016). CHAPTER 15: Miniature pump with ionic polymer metal composite actuator for drug delivery. RSC Smart Materials (pp. 19-45). 10.1039/9781782627234-00019 

       Wang, J., McDaid, A., Sharma, R., Yu, W., & Aw, K. C. (2016). Miniature pump with ionic polymer metal composite actuator for drug delivery. In M. Shahinpoor (Ed.) Ionic polymer metal composites (IPMCs). Vol. 2: Smart multi-functional materials and artificial muscles. Cambridge, UK: Royal Society of Chemistry. 10.1039/9781782627234-00019 

       Turkeli-Ramadan, Z., Sharma, R. N., & Raine, R. R. (2015). Two-dimensional simulation of premixed laminar flame at microscale. Chemical Engineering Science, 138, 414-431. 10.1016/j.ces.2015.08.026 

       Devaraj, H., Aw, K. C., Travas-Sejdic, J., & Sharma, R. N. (2015). Low velocity digital air flow sensor from 3D printed PEDOT:PSS micro-hair structures. 2015 Transducers - 2015 18th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS 2015. 10.1109/TRANSDUCERS.2015.7181118 

       Wang, J., Aw, K. C., McDaid, A., & Sharma, R. N. (2015). Comprehensive Investigation of Diffuser/Nozzle Element at Low Reynolds Number Aimed at Valveless Pump Design. International Journal of Applied Mechanics, 07 (04), 1550058-1550058. 10.1142/S1758825115500581 

       Wang, J., McDaid, A., Sharma, R., & Aw, K. (2015). A Compact Ionic Polymer Metal Composite (IPMC) System with Inductive Sensor for Closed Loop Feedback. Actuators, 4 (2), 114-126. 10.3390/act4020114 

       Several to be inserted here  …..

       Sharma, R. N., & Madawala, U. K. (2011). The concept of a smart wind turbine system. Renewable Energy, 39(1), 403-410. doi:10.1016/j.renene.2011.08.051

       Guha, T. K., Sharma, R. N., & Richards, P. J. (2011). Internal pressure dynamics of a leaky building with a dominant opening. Journal of Wind Engineering and Industrial Aerodynamics, 99(11), 1151-1161.

       Milne, I.A., Sharma R. N., Flay RG, , & Bickerton, S. (2011). Characteristics of the Onset Flow Turbulence at a Tidal-Stream Power Site. In Proceedings of the / Presented at 9th European Wave and Tidal Energy Conference, Southampton, U.K..

       Shim, Y.M., Sharma, R.N., & Richards, P.J. (2011). PIV investigation of the flow structures in the near-exit region issuing from a slot jet. In Proceedings of the / Presented at 9th International Symposium on Particle Image Velocimetry, Tsukuba, Japan.

       Turkeli-Ramadan, Z., Sharma, R.N., & Yamaguchi, K. (2011). Combustion characteristics of HEX-Combustor for Ultra Micro Gas Turbine. In Proceedings of the / Presented at European Combustion Meeting 2011, Cardiff, UK.

       Imraan, M., Sharma, R.N., & Flay, R.G.J.F. (2011). Wind Tunnel Testing of a Telescopic Blades Wind Turbine. In Proceedings of the / Presented at ASME Power 2011, Denver, Colorado, USA.

       Imraan, M.5, Sharma, R. N. (2010) ‘Jet Impingement Heat Transfer from a Circular Cylinder Located Between Confining Walls’, Journal of Thermophysics and Heat Transfer, 24(4), 756 - 764

       Fischer, C.5, Sharma, R. N., Mallinson, G.D. (2010). Flow visualisation to identify mechanisms leading to axis-switching of slotted synthetic jets, 17AFMC – 17th Australasian Fluid Mechanics Conference, Auckland, New Zealand, Dec 5-9.

       Khan, S., Melville, B., Aaad, Y. S., Sharma, R. N. and Nokes, R. (2009) ‘Effect of Vertical Locations of Inlet and Outlet on Hydraulics of Stormwater Retention Ponds using Numerical Modeling, in Proceedings of the 33rd International Association of Hydraulic Engineering & Research (IAHR) Biennial Congress, 9-14 August 2009, Vancouver BC, Canada

       Sharma, R. N. (2008) ‘Internal and Net Envelope Pressures in a Building having Quasi-static Flexibility and a Dominant Opening’, Journal of Wind Engineering and Industrial Aerodynamics, Volume 96, Issues 6-7, June-July 2008, Pages 1074-1083

       Sharma, R. N., Chadwick, D., Haines, J. (2008) ‘Aerodynamics of an intercity bus’, Wind and Structures, Vol. 11, No. 4 (2008).

       I. S. D`eme, N. Navaranjan, R. N. Sharma, (2008) ‘A Cfd Model For Atomization Of Wood Fibre Suspension Under High Pressure’ in: 21st Annual ILASS-Americas Conference, Institute for Liquid Atomization and Spray Systems, Orlando, Florida, May 18–21, 2008

       Sharma, R. N. (2007) ‘Fluid Dynamics Based Analytical Model for Synthetic Jet Actuation’, AIAA Journal, 45(8), 1841-1847 (View Here)

       Sharma, R. N. Maxwell, S., and Tang, X. (2007) ‘Heat Transfer from a Circular Cylinder with Synthetic Jet Impingement’, Paper Number AIAA-2007-3901, Proc of the 39th AIAA Thermophysics Conference, 25-28 June 2007, Miami, USA

       Sharma, R. N., Curtis, S., Naidu, S.R., Morrison, J.R.J., Singh, G. ‘Pressure pulsations inside road vehicles with open windows’, The 5th International Colloquium on Bluff-body aerodynamics & Applications, Ottawa University, Canada, July 2004

       Sharma, R. N. and Richards, P. J. (2003) ‘The Influence of Helmholtz resonance on internal pressures in a low-rise building’, Journal of Wind Engineering and Industrial Aerodynamics, 91, 807-828

OTHER INTERESTS AND ACTIVITIES

       Mentoring: Students from Pacific Islands and Asia (Voluntary)

       Community Service: Hindi Language Classes, Conduct Prayers, Marriage Celebrant

       Hobbies: Walking, Jogging, Table Tennis, Chess

 

 

RALPH GALLEGOS (PhD)                                                                                          VALERIO GIOVANNONI (PhD)