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Journal of Porous Media
Fator do impacto: 1.752 FI de cinco anos: 1.487 SJR: 0.43 SNIP: 0.762 CiteScore™: 2.3

ISSN Imprimir: 1091-028X
ISSN On-line: 1934-0508

Volumes:
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Journal of Porous Media

DOI: 10.1615/JPorMedia.v21.i4.20
pages 311-328

NUMERICAL AND EXPERIMENTAL STUDY OF COMPRESSIBLE GAS FLOW THROUGH A POROUS/FLUID–COUPLED AREA

Xiwen Zhang
Department of Engineering Mechanics, School of Aerospace, Tsinghua University, Beijing 100084, China
Zhaohui Yao
Department of Engineering Mechanics, Tsinghua University, Beijing, 100084, P.R. China
Pengfei Hao
Department of Engineering Mechanics, Tsinghua University, Beijing, 100084, P.R. China

RESUMO

Numerical simulations and theoretical investigations of fluid flow and heat transfer in porous/fluid-coupled areas have increased greatly in recent years. Scant research has concentrated on compressible gas flow in porous/fluid-coupled areas. First, an effective experiment method is proposed that can be used to accurately measure the permeability and inertial coefficient of porous media when gas flows at a high speed and high differential pressure. Using the method, the parameters of the non-Darcy flow through polyvinyl formal porous materials were tested in an actual experiment. Additionally, modified governing equations were used to solve the non-Darcy flow in porous media and turbulent flow in compressible air–coupled regimes. A method to determine the source terms for flow in porous media is presented. A robust numerical scheme was used to discretize the equations, and time-dependent boundary conditions were used to treat the boundary conditions. A detailed numerical and experimental investigation of compressible gas flow in a straight, round pipe with porous/fluid-coupled areas and backward- and forward-facing steps is given. The computational results were in strong agreement with the experimental data.


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