International Journal of Numerical Methods for Heat and Fluid Flow, ( ISI ), Volume (25), No (7), Year (2015-7) , Pages (1658-1681)

Title : ( Effect of fluid-porous interface conditions on steady flow around and through a porous circular cylinde )

Authors: Masoud Bovand , Saman Rashidi , Masoomeh Dehesht , Javad Abolfazli Esfahani ,

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The purpose of this paper is to implement the numerical analysis based on finite volume method to compare the effects of stress-jump (SJ) and stress-continuity (SC) conditions on flow structure around and through a porous circular cylinder. Design/methodology/approach – In this study, a steady flow of a viscous, incompressible fluid around and through a porous circular cylinder of diameter “ D , ” using Darcy-Brinkman-Forchheimer ’ s equation in the porous region, is discussed. The SJ condition proposed by Ochoa-Tapia and Whitaker is applied at the porous-fluid interface and compared with the traditional interfacial condition based on the SC condition in fluid and porous media. Equations wit h the relevant boundary conditions are numerically solved using a finite volume approach. In this stu dy, Reynolds and Darcy numbers are varied within the ranges of 1 o Re o 40 and 10-7 o Da o 10-2, respectively, and the porosities are e ¼ 0.45, 0.7 and 0.95. Findings – Results show that the SJ condition leads to a much smaller boundary layer within porous medium near the interface as compared to the SC condition Originality/value – There is no published research in the literature about the effects of important parameters, such as Porosity and Darcy numbers on different fluid-porous interface conditions for a porous cylinder and comparison the effects of SJ and SC conditions on flow structure around and through a porous circular cylinder

Keywords

, Darcy-Brinkman-Forchheimer, Fluid-porous interface, Porous circular cylinder, Single-domain approach, Steady flow, Viscous incompressible fluid, Stress-jump,
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@article{paperid:1048985,
author = {Masoud Bovand and Rashidi, Saman and Masoomeh Dehesht and Abolfazli Esfahani, Javad},
title = {Effect of fluid-porous interface conditions on steady flow around and through a porous circular cylinde},
journal = {International Journal of Numerical Methods for Heat and Fluid Flow},
year = {2015},
volume = {25},
number = {7},
month = {July},
issn = {0961-5539},
pages = {1658--1681},
numpages = {23},
keywords = {Darcy-Brinkman-Forchheimer; Fluid-porous interface; Porous circular cylinder; Single-domain approach; Steady flow; Viscous incompressible fluid; Stress-jump; Stress-contin},
}

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%0 Journal Article
%T Effect of fluid-porous interface conditions on steady flow around and through a porous circular cylinde
%A Masoud Bovand
%A Rashidi, Saman
%A Masoomeh Dehesht
%A Abolfazli Esfahani, Javad
%J International Journal of Numerical Methods for Heat and Fluid Flow
%@ 0961-5539
%D 2015

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