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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/2843
Title: Numerical simulation and analysis of fluid flow hydrodynamics through a structured array of circular cylinders forming porous medium
Authors: Kundu P.
Kumar V.
Hoarau Y.
Mishra I.M.
Published in: Applied Mathematical Modelling
Abstract: Numerical analysis of the mechanisms that govern the flow in a porous region is crucial for modeling porous media flows. This study describes an adapted and efficient turbulence modeling technique for this category of porous media flows. The main objective of the present study is to provide a detailed pore scale description of fluid flow and to analyze the formation of coherent structures in the wake region close to the solid wall subject to the effects of fine-scale turbulence. The computations were performed in a three-dimensional representative elementary volume (REV) of a porous matrix, which comprised a periodic array of circular cylinders. Two flow-modeling strategies were employed: the steady Reynolds averaged Navier–Stokes (RANS) and transient large eddy simulation (LES) approaches. In the RANS modeling framework, both standard k–? and low Re k–? turbulence models were used. The porosity (?) of the porous REV and Reynolds number (ReD) varied from 0.3 to 0.8 and 10 to 40,000, respectively. We investigated the effects of porosity and ReD on the pore scale velocity distribution, overall macroscopic pressure gradient, and turbulent dynamics, and performed comparisons using RANS and LES calculations within the porous REV. The Darcy parameter (i.e., medium permeability, K) was computed and a correlation was determined between the medium porosity and permeability. The macroscopic pressure gradients in the three-dimensional REV were also compared with the Kozeny–Carman and Darcy–Forchheimer law. © 2016 Elsevier Ltd
Citation: Applied Mathematical Modelling (2016), 40(23-24): 9848-9871
URI: https://doi.org/10.1016/j.apm.2016.06.043
http://repository.iitr.ac.in/handle/123456789/2843
Issue Date: 2016
Publisher: Elsevier Inc.
Keywords: Computational fluid dynamics
Large eddy simulation
Modeling and simulation
Porous medium
RANS
Turbulent flow
ISSN: 0307904X
Author Scopus IDs: 55835249800
7404634425
7801688031
23668474600
Author Affiliations: Kundu, P., Department of Chemical Engineering, Indian Institute of Technology, Roorkee, Uttarakhand 247667, India
Kumar, V., Department of Chemical Engineering, Indian Institute of Technology, Roorkee, Uttarakhand 247667, India
Hoarau, Y., ICUBE, Université de Strasbourg, UMR CNRS 7357, France
Mishra, I.M., Department of Chemical Engineering, Indian Institute of Technology, Roorkee, Uttarakhand 247667, India, Department of Chemical Engineering, Indian School of Mines, DhanbadJharkhand 826004, India
Funding Details: The authors express their gratitude to the Institute Computer Center (ICC) of IITR for providing high-performance computing work station facilities. One of the authors (Mr. Partha Kundu) gratefully acknowledges financial support from the Ministry of Human Resource Development (MHRD), Government of India, in the form of fellowship to perform the present study. We also sincerely thank the reviewers and editors for their insightful comments.
Corresponding Author: Kumar, V.; Department of Chemical Engineering, Indian Institute of TechnologyIndia; email: vim.singh@gmail.com
Appears in Collections:Journal Publications [CH]

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