Investigation of basic molecular gas structural effects on hydrodynamics and thermal behaviors of rarefied shear driven micro/nano flow using DSMC

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• 作者：Omid Ejtehadi ; Ehsan Roohi ; ^{e.roohi@ferdowsi.um.ac.ir} ; Javad Abolfazli Esfahani
• 关键词：DSMC ; Couette flow ; Molecular structures ; Heat flux ; Shear stress
• 刊名：International Communications in Heat and Mass Transfer
• 出版年：2012
• 出版时间：March, 2012
• 年：2012
• 卷：39
• 期：3
• 页码：439-448
• 全文大小：1160 K

文摘

In the present work, rarefied gas flow between two parallel moving plates maintained at the same uniform temperature is simulated using the direct simulation Monte Carlo (DSMC) method. Heat transfer and shear stress behavior in the micro/nano-Couette flow is studied and the effects of the important molecular structural parameters such as molecular diameter, mass, degrees of freedom and viscosity-temperature index on the macroscopic behavior of gases are investigated. Velocity, temperature, heat flux and shear stress in the domain are studied in details. Finally, a discussion on the role of the molecular structural parameters in the decrease or increase of amounts of hydrodynamics and thermal properties of the gas is presented.