文档介绍：中国工程热物理学会传热传质学
学术会议论文编号:123297
矩形微通道内单相液体湍流对流
流动与换热数值研究
靳遵龙,李水云,刘敏珊,张志超
(郑州大学河南省过程传热与节能重点实验室,郑州 450002)
(Tel: 0371-63887823, Email:******@zzu.)
摘要:采用CFD方法对矩形微通道内微流体的流动和换热特性进行了三维数值研究。对当量直径为100μm的微通道内的流体流动与换热特性进行了分析讨论,同时比较了不同当量直径下微通道内流体流动与换热特性,结果表明:雷诺数相同时,阻力系数随当量直径的增加而增加,而努赛尔数随当量直径的增加而减小,压降随当量直径的增加而减小;沿流体流动方向,各个截面上的温度逐渐上升。本文所得计算结果可为分析和设计矩形微通道及其组成的微尺度换热器提供参考依据。
关键词:矩形微通道,数值研究,流体流动,传热
Numerical Study on Flow and Heat Transfer Characteristics of Single-phase Fluid in Rectabgular Micro-channel
Abstract:This paper investigated the flow and heat transfer characteristics of the rectangular micro-channel with three-dimensional numerical simulation by using CFD. The flow and heat transfer characteristics of the rectangular micro-channel of different Hydraulic diameter were
Studied,as well as the hydraulic diameter is shows that:when the reynolds is same , resistance coefficient is increasing as the Hydraulic diameter Nu and Pressure drop is gradually reducing when the Hydraulic diameter increased. Along the direction of flowing ,the temperature of intersecting surface is gradually results of this paper can provide reference for analysis and design of micro-channel and microscale heat exchanger.
Key words: rectangular micro channel, numerical analysis,fluid flow,heat transfer
0 引言
微电子机械系统(MEMS)是近年来发展起来的一种新型多学科交叉的技术,该技术涉及机械、电子、化学、物