平板微通道流动入口段粗糙度效应的数值模拟

中国机械工程 ›› 2011, Vol. 22 ›› Issue (3): 326-330.

平板微通道流动入口段粗糙度效应的数值模拟

高新学1;云和明2

1.山东省交通工程监理咨询公司,济南,250014

2.山东建筑大学,济南,250101

出版日期:2011-02-10 发布日期:2011-03-02
基金资助:
山东省自然科学基金资助项目(2R2010EM061)；山东建筑大学博士启动基金资助项目(824008)
Shandong Provincial Natural Science Foundation of China（No. 2R2010EM061）

Numerical Simulation of Roughness Effects on Flow Entrance in Flat Micro-channels

Gao Xinxue1;Yun Heming2

1.Shandong Transportation Engineering Consultant Company,Jinan,250014

2.Shandong Jianzhu University,Jinan,250101

Online:2011-02-10 Published:2011-03-02
Supported by:
Shandong Provincial Natural Science Foundation of China（No. 2R2010EM061）

摘要/Abstract

摘要：

以粗糙平行平板微通道为研究对象，以三角形锯齿状粗糙元模拟固体表面的粗糙度，采用CFD技术研究了绝对粗糙度和相对粗糙度对平行平板微通道流动特性的影响，着重分析了粗糙度和流体速度对水力入口段长度的影响规律，同时研究了相对粗糙度对微通道转捩雷诺数的影响。

关键词:

微通道, 粗糙元, 水力入口段, CFD

Abstract:

The influence of absolute roughness and relative roughness on entrance flow in parallel flat micro-channels was investigated numerically with triangular toothed roughness cell as surface roughness of solid by using CFD technologies. The influences of solid surface roughness and fluid velocities on the flow entrance length of parallel flat micro-channels were researched,the influences of relative roughness on critical Reynolds number were also studied herein.

Key words:

micro-channel, roughness cell, flow entrance;computational fluid dynamics(CFD)

中图分类号:

TK124

高新学, 云和明.

平板微通道流动入口段粗糙度效应的数值模拟

[J]. 中国机械工程, 2011, 22(3): 326-330.

GAO Xin-Hua, YUN He-Meng.

Numerical Simulation of Roughness Effects on Flow Entrance in Flat Micro-channels

[J]. China Mechanical Engineering, 2011, 22(3): 326-330.

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