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	Deposition of aerosol in a laminar pipe flow
	Yu Su-Yuan ; Luo XiaoWei
	2010-10-12 ; 2010-10-12
关键词	Theoretical or Mathematical/ aerosols convection diffusion gravitation laminar flow multiphase flow pipe flow/ aerosol deposition laminar pipe flow thermophoretic deposition pipe wall temperature laminar flow diffusion convection thermophoresis gravitational settling lift force effect SIMPLER aerosol transport equation deposition efficiency penetration efficiency critical particle trajectory method/ A4755K Multiphase flows A4760 Flows in ducts, channels, and conduits A8270R Aerosols and foams
中文摘要	In a laminar pipe flow, thermophoretic deposition occurs when the temperature of the pipe wall is less than the temperature of the fluid. For a horizontal pipe, gravity has a significant effect on the deposition of aerosol. Due to the laminar flow of gas fluid, a lift force is imposed on the particle and could affect the deposition of aerosol. In the present work, we considered the influences of various factors on the deposition of aerosol, including diffusion and convection, thermophoresis, gravitational settling and the lift force effect. The revised semi-implicit method for pressure-linked (SIMPLER) was employed to solve the aerosol transport equation. The deposition efficiency of aerosol in a pipe was obtained and the concentration distribution of aerosol at an arbitrary cross-section of pipe was given. The results reveal that when gravitational settling was considered the deposition efficiency had a minimum, corresponding to the penetration efficiency having a maximum. For large particles, the deposition of aerosol was dominated by external forces, and the critical particle trajectory method (CPTM) was used to analyze the deposition of aerosol with the action of thermophoretic force and gravity. The result from CPTM coincided very well with the result from SIMPLER.
语种	英语
出版者	Springer Netherlands ; Netherlands
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/79300]
专题	清华大学
推荐引用方式 GB/T 7714	Yu Su-Yuan,Luo XiaoWei. Deposition of aerosol in a laminar pipe flow[J],2010, 2010.
APA	Yu Su-Yuan,&Luo XiaoWei.(2010).Deposition of aerosol in a laminar pipe flow..
MLA	Yu Su-Yuan,et al."Deposition of aerosol in a laminar pipe flow".(2010).

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