[1]郜凯凯,陈宝明*,姜昊,等.基于LBM的通道内多孔介质交界面滑移效应研究[J].山东建筑大学学报,2016,(03):237-243.
 Gao Kaikai,Chen Baoming,* Jiang Hao,et al.Study on slippage effect of porous media interface within the channel by Lattice Boltzmann Method[J].Journal of Shandong jianzhu university,2016,(03):237-243.
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基于LBM的通道内多孔介质交界面滑移效应研究()
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《山东建筑大学学报》[ISSN:1673-7644/CN:37-1449/TU]

卷:
期数:
2016年03期
页码:
237-243
栏目:
研究论文
出版日期:
2016-06-15

文章信息/Info

Title:
Study on slippage effect of porous media interface within the channel by Lattice Boltzmann Method
作者:
郜凯凯1陈宝明123*姜昊1芦凯1
(1. 山东建筑大学 热能工程学院,山东 济南 250101;2. 可再生能源建筑利用技术省部共建教育部重点实验室,山东 济南 250101;3. 山东省可再生能源建筑应用技术重点实验室,山东 济南 250101)
Author(s):
Gao Kaikai1 Chen Baoming123* Jiang Hao1 et al.
(1. School of Thermal Energy Engineering, Shandong Jianzhu University, Jinan 250101, China; 2. Key Laboratory of Renewable Energy Utilization Technologies in Building, Ministry of Education, Jinan 250101, China; 3. Shandong Key Laboratory of Renewable Energy Applied Technologies, Jinan 250101, China)
关键词:
通道多孔介质格子Boltzmann方法交界面滑移效应
Keywords:
channel porous media Lattice Boltzmann Method porous/fluid interface slippage effect
分类号:
TB126
文献标志码:
A
摘要:
多孔介质与流体所构成复合区域内流体流动现象在自然界及社会许多行业之中广泛存在,研究含多孔介质通道内流体流动的问题具有重要意义。文章基于格子Boltzmann方法对局部填充多孔介质的通道内流体流动进行模拟,研究了不同工况条件下对多孔介质区域与纯流体交界面处的滑移效应变化规律,并采用编程进行数值模拟及结果验证,分析了不同Re数和孔隙率对多孔介质区域与纯流体交界面处的滑移效应。结果表明:速度滑移系数α始终为正,应力滑移系数β始终为负值;速度滑移系数α和应力滑移系数β的数值随Re数和孔隙率ε增大时的变化趋势不同,但滑移效应的变化趋势相同,即速度滑移效应和应力滑移效应都随Re数的增大而增强,随孔隙率ε的增大而减弱。
Abstract:
Fluid flow phenomenon on the composite area of porous media and fluid is so widespread in nature and human society. The study on the flow in porous media channels has important practical significance. The model on channel partially filled with structured porous layer was simulated numerically by lattice Boltzmann method. Study on the change rule of porous media area and pure fluid interface slippage effect under different conditions, numerical simulation by programming, analyzing principally the impact of different Re number and the porosity ε of the porous medium on the slip effect at the porous/fluid interface. The numerical results show that the velocity slip coefficient is always positive. On the contrary, the stress slip coefficient is always negative; the change trends of velocity slip and stress slip coefficient with Re and the porosity ε are different, instead, the tendency of the slip effect is the same, which means that the velocity slip effect and the stress slip effect are enhanced with the increase of Re number, and decreases with the increase of the porosity ε.

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更新日期/Last Update: 2016-07-04