• Numerical investigation into entropy generation in a transient generalized Couette flow of nanofluids with convective cooling

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      https://www.ias.ac.in/article/fulltext/sadh/040/07/2073-2093

    • Keywords

       

      Channel flows; nanofluids; Couette flow; entropy generation; Bejan number.

    • Abstract

       

      This work investigates the effects of convective cooling on entropy generation in a transient generalized Couette flow of water-based nanofluids containing Copper (Cu) and Alumina (Al2O3) as nanoparticles. Both First and Second Laws of thermodynamics are utilised to analyse the problem. The model partial differential equations for momentum and energy balance are tackled numerically using a semidiscretization finite difference method together with Runge–Kutta Fehlberg integration scheme. Graphical results on the effects of parameter variation on velocity, temperature, skin friction, Nusselt number, entropy generation rate, irreversibility ratio and Bejan number are presented and discussed.

    • Author Affiliations

       

      M H Mkwizu1 2 O D Makinde3 Yaw Nkansah-Gyekye1

      1. School of Computational and Communication Science and Engineering, Nelson Mandela African Institution of Science and Technology, (NM-AIST), P.O. Box 447, Arusha, Tanzania
      2. Department of Biometry and Mathematics, Sokoine University of Agriculture, P O BOX 3038, Morogoro, Tanzania
      3. Faculty of Military Science, Stellenbosch University, Private Bag X2, Saldanha 7395, South Africa
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