微液滴在窄矩形通道内热泳沉积特性的研究  

Research on Thermophoretic Deposition of Micro Droplets in Narrow Rectangular Channels

作　　者：林达平[1] 周涛[1] 汝小龙[1] 

机构地区：[1]华北电力大学核热工安全与标准化研究所,北京102206

出　　处：《动力工程学报》2013年第9期698-701,738,共5页Journal of Chinese Society of Power Engineering

基　　金：北京市自然科学基金资助项目(3092016);教育部博士点基金资助项目(200800791005)

摘　　要：利用Fluent软件对微液滴随空气流在窄矩形通道内流动时的沉积情况进行了模拟,得到微液滴在窄矩形通道内的质量浓度分布和速度分布.结果表明:在存在温度梯度的情况下,微液滴会在窄矩形通道的管壁处发生沉积,且随着温度梯度的增大,微液滴在管壁处的沉积效应增强;通过增大温度梯度,可以进行微液滴的脱除.Thermophoretic deposition of micro droplets entrained by air flow in a narrow rectangular chan nel was simulated using Fluent software, during which the mass concentration and velocity distribution of the droplets were obtained. Results show that when temperature gradient exists in the channel, the micro droplets will deposit on the channel wall, and with the rise of temperature gradient, the deposition effect will be intensified, therefore the micro droplets may be removed by raising the temperature gradient.

关 键 词：微液滴 窄矩形通道 热泳 温度梯度 沉积特性 

分 类 号：TK121[动力工程及工程热物理—工程热物理]