Numerical investigation for second law analysis of ferrofluid inside a porous semi annulus: An application of entropy generation and exergy loss
International Journal of Numerical Methods for Heat & Fluid Flow
ISSN: 0961-5539
Article publication date: 23 January 2019
Issue publication date: 22 February 2019
Abstract
Purpose
The purpose of this paper is to present the entropy analysis of ferrofluid inside a porous space with magnetic force. Homogenous model with second law analysis is also taken into account.
Design/methodology/approach
Innovative model has been proposed and designed using control volume finite element method.
Findings
Experimental results demonstrate that Bejan number augments with augment of Rayleigh. As Hartmann number rises, exergy loss enhances. Exergy loss increases by increasing Hartmann number, whereas magnetic entropy generation reduces with the decrease of Ha. The proposed model can be used for combustion process and optimizing the performance of energy conversion system like gas turbine.
Originality/value
To the best of authors’ knowledge, this model is reported for the first time.
Keywords
Acknowledgements
Current article was supported by the National Sciences Foundation of China (NSFC) (No. U1610109), UOW Vice-Chancellor’s Postdoctoral Research Fellowship. Also, the authors acknowledge the funding support of Babol Noshirvani University of Technology through Grant Program No. BNUT/390051/97.
Citation
Sheikholeslami, M., Ellahi, R., Shafee, A. and Li, Z. (2019), "Numerical investigation for second law analysis of ferrofluid inside a porous semi annulus: An application of entropy generation and exergy loss", International Journal of Numerical Methods for Heat & Fluid Flow, Vol. 29 No. 3, pp. 1079-1102. https://doi.org/10.1108/HFF-10-2018-0606
Publisher
:Emerald Publishing Limited
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