Heat Transfer Characteristics of Gaseous Flows in Micro-Channels With Constant Heat Flux
Heat Transfer Characteristics of Gaseous Flows in Micro-Channels With Constant Heat Flux
复制标题
恒定热通量微通道内气体流动的传热特性
DOI：
10.1115/icmm2005-75123
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发表时间：
2005
期刊：
影响因子：
--
通讯作者：
Y. Asako
中科院分区：
文献类型：
--
作者：
C. Hong;Y. Asako
通过求解二维可压缩动量方程和能量方程，得到了平板微通道内气体流动的换热特性。数值方法是基于拉格朗日欧拉（ALE）方法。计算是针对具有恒定热通量壁的通道进行的，其范围为1×103至1×104 W·m−2。通道高度范围为10 - 100 μm，通道高度和长度的纵横比为200。滞止压力在1.2× 10 ~ 5 ~ 5.0×105 Pa之间变化。出口压力固定在大气压。将传统尺寸平行板管道的努塞尔数预测壁温与数值分析计算结果进行了比较。Copyright © 2005 by ASME
Two-dimensional compressible momentum and energy equations are solved to obtain the heat transfer characteristics of gaseous flows in parallel-plate micro-channels. The numerical methodology is based on the Arbitrary-Lagrangian-Eulerian (ALE) method. The computations are performed for channels with constant heat flux walls which range from 1×103 to 1×104 W·m−2 . The channel height ranges from 10 to 100 μm and the aspect ratio of the channel height and length is 200. The stagnation pressure varies from 1.2×105 to 5.0×105 Pa. The outlet pressure is fixed at the atmosphere. The predicted wall temperature by the Nusselt number for the conventional size parallel plate duct is compared with that of the results computed by numerical analysis.Copyright © 2005 by ASME