Large-eddy simulation of fluid mixing in tee with sintered porous medium

doi:10.1007/s10483-012-1594-9

Applied Mathematics and Mechanics (English Edition) ›› 2012, Vol. 33 ›› Issue (7): 911-922.doi: https://doi.org/10.1007/s10483-012-1594-9

Large-eddy simulation of fluid mixing in tee with sintered porous medium

王永伟¹, 卢涛¹, 姜培学², 成鹏飞¹, 王奎升¹

1. School of Mechanical and Electrical Engineering, Beijing University of Chemical Technology, Beijing 100029, P. R. China;
2. Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Thermal Engineering, Tsinghua University, Beijing 100084, P. R. China

收稿日期:2011-06-10 修回日期:2012-04-06 出版日期:2012-07-10 发布日期:2012-07-10
通讯作者: Tao LU, Associate Professor, Ph.D., E-mail: likesurge@sina.com E-mail:likesurge@sina.com
基金资助:
Project supported by the National Natural Science Foundation of China (No. 50906002), the National Basic Research Program of China (No. 2011CB706900), the Research Fund for the Doctoral Program of Higher Education of China (No. 20090010110006), and the Beijing Novel Program of China (No. 2008B16)

Large-eddy simulation of fluid mixing in tee with sintered porous medium

Yong-wei WANG¹, Tao LU¹, Pei-xue JIANG², Peng-fei CHENG¹, Kui-sheng WANG¹

1. School of Mechanical and Electrical Engineering, Beijing University of Chemical Technology, Beijing 100029, P. R. China;
2. Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Thermal Engineering, Tsinghua University, Beijing 100084, P. R. China

Received:2011-06-10 Revised:2012-04-06 Online:2012-07-10 Published:2012-07-10
Supported by:
Project supported by the National Natural Science Foundation of China (No. 50906002), the National Basic Research Program of China (No. 2011CB706900), the Research Fund for the Doctoral Program of Higher Education of China (No. 20090010110006), and the Beijing Novel Program of China (No. 2008B16)

摘要/Abstract

摘要： Mixing processes of hot and cold fluids in a tee with and without sintered copper spheres are simulated by FLUENT using the large-eddy simulation (LES) turbulent flow model and the sub-grid scale (SGS) Smagorinsky-Lilly (SL) model with buoyancy. Comparisons of numerical results of the two cases with and without sintered copper spheres show that the porous medium significantly reduces velocity and temperature fluctuations because the porous medium can effectively restrict the fluid flow and enhance heat transfer. The porous medium obviously increases the pressure drop in the main duct. The porous medium reduces the power spectrum density (PSD) of temperature fluctuations in the frequency range from 1 Hz to 10 Hz.

关键词: Hopf bifurcation points, extended systems, large-eddy simulation, mixing, tee, sintered porous medium

Abstract: Mixing processes of hot and cold fluids in a tee with and without sintered copper spheres are simulated by FLUENT using the large-eddy simulation (LES) turbulent flow model and the sub-grid scale (SGS) Smagorinsky-Lilly (SL) model with buoyancy. Comparisons of numerical results of the two cases with and without sintered copper spheres show that the porous medium significantly reduces velocity and temperature fluctuations because the porous medium can effectively restrict the fluid flow and enhance heat transfer. The porous medium obviously increases the pressure drop in the main duct. The porous medium reduces the power spectrum density (PSD) of temperature fluctuations in the frequency range from 1 Hz to 10 Hz.

Key words: Hopf bifurcation points, extended systems, large-eddy simulation, mixing, tee, sintered porous medium

中图分类号:

TK121

王永伟;卢涛;姜培学;成鹏飞;王奎升. Large-eddy simulation of fluid mixing in tee with sintered porous medium[J]. Applied Mathematics and Mechanics (English Edition), 2012, 33(7): 911-922.

Yong-wei WANG;Tao LU;Pei-xue JIANG;Peng-fei CHENG;Kui-sheng WANG. Large-eddy simulation of fluid mixing in tee with sintered porous medium[J]. Applied Mathematics and Mechanics (English Edition), 2012, 33(7): 911-922.

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Large-eddy simulation of fluid mixing in tee with sintered porous medium

Large-eddy simulation of fluid mixing in tee with sintered porous medium

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