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	Direct numerical simulation of microparticle motion in channel flow with thermophoresis
	You Changfu ; Li Guanghui
	2010-05-11 ; 2010-05-11
关键词	SMALL PARTICLES BOUNDARY-LAYER WALL REGION DEPOSITION VELOCITY Engineering, Environmental Engineering, Civil Environmental Sciences
中文摘要	The motion of microparticles in a vertical flow channel driven by drag and thermophoretic forces was simulated using the direct numerical simulation method with the particles tracked using the Lagrangian method. The particle motions were analyzed for five sizes of particles (d(p) = 1, 2.5, 10, 20, and 100 mu m) at three temperature differences (Delta t=0, 130, and 180 degrees C). The results showed that the effect of thermophoresis on the deposition near the wall decreases with increasing particle diameter and can be neglected for particles with d(p) = 100 mu m. Since the deposition rates of inhalable particles (PM10) increase dramatically as the thermophoresis force increases, especially for particles with d(p) = 1 mu m, thermophoresis is an effective method for collecting inhalable particles.
语种	英语 ; 英语
出版者	ASCE-AMER SOC CIVIL ENGINEERS ; RESTON ; 1801 ALEXANDER BELL DR, RESTON, VA 20191-4400 USA
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/25910]
专题	清华大学
推荐引用方式 GB/T 7714	You Changfu,Li Guanghui. Direct numerical simulation of microparticle motion in channel flow with thermophoresis[J],2010, 2010.
APA	You Changfu,&Li Guanghui.(2010).Direct numerical simulation of microparticle motion in channel flow with thermophoresis..
MLA	You Changfu,et al."Direct numerical simulation of microparticle motion in channel flow with thermophoresis".(2010).

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