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FREE CONVECTION OF VISCOELASTIC WALTER'S FLUID−SATURATED POROUS MEDIUM IN A VERTICAL DOUBLE-PASSAGE WAVY CHANNEL

Volume 17, Edição 6, 2014, pp. 483-502
DOI: 10.1615/JPorMedia.v17.i6.20
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RESUMO

Fully developed laminar free convection of a Walter's fluid (model B')-saturated porous medium has been investigated in a vertical double-passage wavy channel. The considered channel has asymmetric constant wall temperatures and is divided into two passages by means of a thin plane baffle. Analytical solutions are found using the perturbation method and long wave approximation has been used to solve the perturbed part. Results are drawn for varying physical parameters such as Grashof number, wall temperature ratio, porous parameter, viscoelastic parameter, and product of wave number and space coordinate at different positions of the baffle. These results indicate that the fully developed flow could be significantly affected with buoyancy forces, wall temperature ratio, viscoelastic parameter, and wave number in the double-passage channel. The skin friction and the Nusselt numbers are given in the tables for varying the governing parameters.

CITADO POR
  1. Nield Donald A., Bejan Adrian, Internal Natural Convection: Heating from the Side, in Convection in Porous Media, 2017. Crossref

  2. Umavathi J. C., Chamkha Ali J., Stability Analysis of Cross Diffusion for the Walters B Fluid Model Saturated With Permeable Nanofluid, Journal of Thermal Science and Engineering Applications, 11, 4, 2019. Crossref

  3. Ismael Muneer A., Hussain Shafqat, Alsabery Ammar I., Chamkha Ali J., Hashim Ishak, Thermal performance of a vertical double-passage channel separated by a flexible thin sheet, International Communications in Heat and Mass Transfer, 137, 2022. Crossref

  4. Nield Donald A., Bejan Adrian, Internal Natural Convection: Heating from Below, in Convection in Porous Media, 2017. Crossref

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