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Characterisation of a small viscous flow turbine

Lemma, Engida and Deam, R. T and Toncich, D and Collins, R (2008) Characterisation of a small viscous flow turbine. Experimental Thermal and Fluid Science, 33 (1). pp. 96-105. ISSN 0894-1777

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Abstract

The result of experimental and numerical study that was undertaken to determine the performance characteristics of viscous flow turbines is presented. It is anticipated that these devices may find use in applications such as small power sources for electronic appliances and micro-combined heat and power applications. In the numerical work that was carried out to broaden the experimental results, commercial CFD solver Fluent 6.2 was used while accompanying software, Gambit 3.2, was used for performing the necessary pre-processing. The results of the experimental study indicate that the adiabatic efficiency of these machines is around 25%. The main reasons for the low efficiency have been identified to be, parasitic losses in the bearing, viscous losses in the end walls, and other dissipative losses in the plenum chamber that also significantly contribute to the low efficiencies of these devices. If these parasitic losses can be minimised the turbine could potentially operate with an adiabatic expansion efficiency close to the theoretical limit of around 40%.

Item Type: Article
Uncontrolled Keywords: ResPubID18981, microturbines, viscous flow turbines, experimental measurement, CFD modelling
Subjects: FOR Classification > 0905 Civil Engineering
Faculty/School/Research Centre/Department > School of Engineering and Science
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Depositing User: VUIR
Date Deposited: 02 Sep 2011 05:25
Last Modified: 05 Feb 2015 23:26
URI: http://vuir.vu.edu.au/id/eprint/3785
DOI: 10.1016/j.expthermflusci.2008.07.009
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Citations in Scopus: 6 - View on Scopus

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