An Experimental Study of Heat Transfer of a Porous Channel Subjected to Oscillating Flow
An Experimental Study of Heat Transfer of a Porous Channel Subjected to Oscillating Flow
复制标题
DOI：
10.1115/1.1336510
复制
发表时间：
2001-02
影响因子：
--
通讯作者：
H. Fu;K. C. Leong;Xiao-Yang Huang;C. Liu
中科院分区：
文献类型：
--
作者：
H. Fu;K. C. Leong;Xiao-Yang Huang;C. Liu
本文对振荡流作用下多孔通道的传热进行了实验研究。测量了定常流和振荡流的表面温度分布。分析了局部和长度平均Nusselt数。实验结果表明，振荡流的表面温度分布比定常流的表面温度分布均匀。由于流动方向相反，存在两个振荡流动的热入口区域。振荡流的长度平均努塞尔数高于定常流的长度平均努塞尔数。定常流和振荡流的长度平均努塞尔数随无量纲分组参数k * /kf（D e /L）1/2 Pe *1/2线性增加。振荡流作用下的多孔通道热沉可以被认为是冷却高速电子器件的一种有效方法
Experiments have been conducted to study the heat transfer of a porous channel subjected to oscillating flow. The surface temperature distributions for both steady and oscillating flows were measured. The local and length-averaged Nusselt numbers were analyzed. The experimental results revealed that the surface temperature distribution for oscillating flow is more uniform than that for steady flow. Due to the reversing flow direction, there are two thermal entrance regions for oscillating flow. The length-averaged Nusselt number for oscillating flow is higher than that for steady flow. The length-averaged Nusselt number for both steady and oscillating flows increase linearly with a dimensionless grouping parameter k * /k f (D e /L) 1/2 Pe *1/2 . The porous channel heat sink subjected to oscillating flow can be considered as an effective method for cooling high-speed electronic devices