Publication de 4 numéros par an
ISSN Imprimer: 2151-4798
ISSN En ligne: 2151-562X
Indexed in
ENTROPY GENERATION OF Cu−WATER NANOFLUIDS THROUGH NON-DARCY POROUS MEDIUM OVER A CONE WITH CONVECTIVE BOUNDARY CONDITION AND VISCOUS DISSIPATION EFFECTS
RÉSUMÉ
The second law analysis for free convection heat transfer along a cone embedded in a nanofluid saturated non-Darcy porous medium with the effects of viscous dissipation and Newtonian heating is studied in the current paper. The model used for the nanofluid refers to a solid–liquid mixture with a continuous phase which is a nanometer-sized nanoparticles such as copper (Cu) dispersed in conventional base fluid. The nonlinear governing equations for this investigation are transformed into a set of similar equations and solved numerically using MATLAB function bvp4c. The numerical results are compared with the previous results and an excellent agreement is obtained. In addition, the numerical data for velocity and temperature are used to compute the entropy generation and Bejan number. The effects of the governing parameters, such as non-Darcy, viscous dissipation, and solid volume fraction parameter on the velocity, temperature, profiles, entropy generation, and Bejan number are presented in graphs. It is found that the increase in the Biot number or Gebhart number causes a reduction in the local entropy generation. Also, the irreversibility for the nanofluid is higher than that of pure fluid.
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