ENTROPY GENERATION MINIMIZATION OF NANOFLUID FLOW IN A MHD CHANNEL CONSIDERING THERMAL RADIATION EFFECT

  • M. Habibi Matin Kermanshah University of Technology
  • R. Hosseini Amirkabir University of Technology (Tehran Polytechnic)
  • M. Simiari Amirkabir University of Technology (Tehran Polytechnic)
  • P. Jahangiri University of British Columbia
Keywords: Entropy generation, channel, Minimization, Nanofluid, MHD

Abstract

The purpose of this article is the total entropy generation minimization of the nanofluid magneto-hydrodynamic (MHD) flow through a channel formed by two parallel isothermal plates considering thermal radiation effect. Air is the main fluid and three types of nanoparticles such as Al2O3, Ti and Cu are examined. The velocity and temperature fields are obtained from solution of the momentum and energy equations analytically. The local and total entropy generation rates are calculated and then the total entropy generation rate is presented graphically versus governing dimensionless parameters. Electrical efficiency, radiation parameter, nanoparticles volume fraction, Hartman and Peclet numbers are considered in this work. The results show that there are conditions in which the total entropy generation rate could be optimized.

DOI: http://dx.doi.org/10.5755/j01.mech.19.4.5050

Published
2013-08-29
Section
MECHANICS OF FLUIDS AND GASES