TURBULENT FLOW SIMULATION OF THE NON-NEWTONIAN FLUIDS THROUGH A POROUS MEDIUM USING LES TURBULENCE MODEL

被引：0
作者：
Taheripour S. [1 ]
Malek-Abad F.G. [1 ]
Khayyaminejad A. [2 ]
Saffarian M. [1 ]
机构：
[1] Department of Mechanical Engineering, Faculty of Engineering, Shahid Chamran University of Ahvaz, Ahvaz
[2] Department of Mechanical Engineering, University of Windsor, Windsor
来源：
Special Topics and Reviews in Porous Media | 2024年 / 15卷 / 04期
关键词：
large eddy simulation; non-Newtonian fluids; porous media; turbulence modeling;
D O I：
10.1615/SPECIALTOPICSREVPOROUSMEDIA.2023046920
中图分类号：
学科分类号：
摘要：
In this study, fully turbulent flow of non-Newtonian fluids is studied in a square periodic array as a porous medium, with porosity ranging from 0.5 to 0.84. Large eddy simulation (LES) is used as an effective turbulence model at a Reynolds number of 40,000. The governing equations are solved by Ansys Fluent commercial software for various porosities. The power-law and Carreau approaches are employed to model the dilatant and pseudo-plastic non-Newtonian fluids. In this study, the power-law and Carreau models are also compared. The results showed that an increase in porosity has a significant effect on flow parameters. Specifically, as porosity increases, vorticities, pressure, and velocity values increase within the computational domain. Moreover, it was observed that the Carreau model has a greater ability to obtain more realistic results in porous media domain and complex geometries. © 2024 by Begell House, Inc.
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页码：21 / 41
页数：20
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