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DOUBLE DIFFUSIVE NATURAL CONVECTION AND ENTROPY GENERATION THROUGH A TRAPEZOIDAL POROUS CAVITY

Volume 11, Edição 2, 2020, pp. 189-202
DOI: 10.1615/SpecialTopicsRevPorousMedia.2020030589
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RESUMO

The present paper provides a numerical investigation about heat and mass transfer and entropy generation in a trapezoidal porous cavity saturated with a binary mixture of perfect gas and submitted to double diffusive convection. The analysis is performed using Darcy−Brinkman formulation with the Boussinesq approximation. The set of coupled equations of mass, momentum, energy, and species conservation are solved using the control volume finite-element method. Effects of buoyancy ratio and medium permeability and of the aspect ratio of the cavity on different irreversibilities are studied. It was found that entropy generation considerably depends on the buoyancy forces and reaches a minimum for a specific value of buoyancy ratio. A balance between Darcy viscous dissipation and other irreversibilities affect the entropy generation behavior. The variation of total entropy generation could be driven by heat transfer and diffusion or by fluid friction according to aspect ratio and Darcy number values.

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CITADO POR
  1. Ullah Habib, Hayat T., Ahmad Salman, Sh. Alhodaly M., Momani Shaher, Numerical simulation of MHD hybrid nanofluid flow by a stretchable surface, Chinese Journal of Physics, 71, 2021. Crossref

  2. Ullah Habib, Hayat T., Ahmad Salman, Alhodaly Mohammed Sh., Entropy generation and heat transfer analysis in power-law fluid flow: Finite difference method, International Communications in Heat and Mass Transfer, 122, 2021. Crossref

  3. Swamy H. A. Kumara, Sankar M., Reddy N. Keerthi, Manthari M. S. Al, Double diffusive convective transport and entropy generation in an annular space filled with alumina-water nanoliquid, The European Physical Journal Special Topics, 231, 13-14, 2022. Crossref

  4. Badday Alaa Jabbar , Harfash Akil J., THERMOSOLUTAL CONVECTION IN ROTATING BIDISPERSIVE POROUS MEDIA WITH GENERAL BOUNDARY CONDITIONS , Special Topics & Reviews in Porous Media: An International Journal, 13, 6, 2022. Crossref

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