Poiseuille flow and thermal transpiration of a rarefied gas between plane parallel walls with nonuniform surface properties: integral equation approach

Poiseuille flow and thermal transpiration of a rarefied gas between plane parallel walls with nonuniform surface properties: integral equation approach
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表面性质不均匀的平面平行壁之间稀薄气体的泊肃叶流和热蒸发:积分方程方法

DOI:
10.1088/1873-7005/ab523b
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发表时间:
2020
影响因子:
1.5
通讯作者:
Toshiyuki Doi
Toshiyuki Doi
中科院分区:
工程技术4区
文献类型:
--
作者:
鮎貝崇広;金川哲也;Toshiyuki Doi

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从动力学理论出发,研究了非均匀壁面间稀薄气体的泊泽维尔流动和热蒸腾现象。具体来说,其中一面墙是漫反射边界,另一面墙是麦克斯韦型边界,其容纳系数在垂直于流动方向上具有周期性分布。在玻尔兹曼方程的线性化bhatnagar - gross - krookk - welander模型的基础上研究了气体的行为。导出了大克努森数下宏观流速的扩展积分方程,并进行了数值求解。先前研究中观察到的质量流量对调节系数分布的依赖特征(Doi 2015 ASME J. fluid .)。Eng. 137 101103)被发现在克努森数的很大范围内,直到1000。利用积分方程对大克努森数解的逐次逼近方法进行了数值试验。
Poiseuille flow and thermal transpiration of a rarefied gas between plane parallel walls with nonuniform surface properties are studied on the basis of kinetic theory. Specifically, one of the walls is a diffuse reflection boundary, and the other wall is a Maxwell-type boundary whose accommodation coefficient has a periodic distribution in the direction perpendicular to the flow. The behavior of the gas is studied on the basis of the linearized Bhatnagar–Gross–Krook–Welander model of the Boltzmann equation. The extended integral equation for the macroscopic flow velocity is derived for the analysis at large Knudsen numbers, and is numerically solved. Features in the dependence of the mass flow rate on the distribution of the accommodation coefficient observed in the previous study (Doi 2015 ASME J. Fluids. Eng. 137 101103) were found to hold over a quite wide range of the Knudsen number up to 1000. A successive approximation method of the solution for a large Knudsen number is numerically tested using the integral equation.
具有对称和非对称气壁相互作用的平面泊肃叶流
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