Slip-flow and heat transfer of gaseous flows in the entrance of a wavy microchannel

被引：23
|
作者：
Shokouhmand, H. [1 ]
Bigham, S. [1 ]
机构：
[1] Univ Tehran, Coll Engn, Sch Mech Engn, Tehran, Iran
来源：
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER | 2010年 / 37卷 / 06期
关键词：
Microchannel; Wavy geometry; Slip boundary condition;
D O I：
10.1016/j.icheatmasstransfer.2010.03.008
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The present work investigates the developing fluid flow and heat transfer through a wavy microchannel with numerical methods. Governing equations including continuity, momentum and energy with the velocity slip and temperature jump conditions at the solid walls are discretized using the finite-volume method and solved by SIMPLE algorithm in curvilinear coordinate. The effects of creep flow and viscous dissipation are assumed. The numerical results are obtained for various Knudsen numbers. The results show that Knudsen number has declining effect on both the C-f.Re and Nusselt number on the undeveloped fluid flow. Significant viscous dissipation effects have been observed for large Knudsen number. Also, viscous dissipation causes a singular point in Nusselt profiles. (C) 2010 Elsevier Ltd. All rights reserved.
引用
收藏
页码：695 / 702
页数：8
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