Laminar forced convection slip-flow in a micro-annulus between two concentric cylinders
Laminar forced convection slip-flow in a micro-annulus between two concentric cylinders
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DOI：
10.1016/j.ijheatmasstransfer.2007.10.036
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发表时间：
2008-07-01
影响因子：
5.2
通讯作者：
Aydin, Orhan
中科院分区：
文献类型：
--
作者：
Avci, Mete;Aydin, Orhan
对两个同心微圆柱之间的环形微管道中的粘性耗散气体在流体动力学和热学上完全发展的流动中的强制对流换热进行了分析。考虑了粘性耗散效应、速度滑移和壁面温度跃变。考虑两种不同的热边界条件情况：外壁和绝热内壁处的均匀热通量（情况A）以及内壁和绝热外壁处的均匀热通量（情况B）。对于不同的纵横比、努森数和布林克曼数值，获得了速度和温度分布以及努塞尔数的解。将获得的分析结果与文献中的结果进行比较，观察到非常一致。 (c) 2007 Elsevier Ltd. 保留所有权利。
Forced convection heat transfer in hydrodynamically and thermally fully developed flows of viscous dissipating gases in annular microducts between two concentric micro cylinders is analyzed analytically. The viscous dissipation effect, the velocity slip and the temperature jump at the wall are taken into consideration. Two different cases of the thermal boundary conditions are considered: uniform heat flux at the outer wall and adiabatic inner wall (Case A) and uniform heat flux at the inner wall and adiabatic outer wall (Case B). Solutions for the velocity and temperature distributions and the Nusselt number are obtained for different values of the aspect ratio, the Knudsen number and the Brinkman number. The analytical results obtained are compared with those available in the literature and an excellent agreement is observed. (c) 2007 Elsevier Ltd. All rights reserved.