Wind-tunnel Experiment on Dust Dry Deposition

doi:10.1063/1.4825689

	Wind-tunnel Experiment on Dust Dry Deposition
	Zhang, J; Shao, YP; Huang, N; Zhang, J (reprint author), Lanzhou Univ, Key Lab Mech Disaster & Environm Western China, Minist Educ China, Lanzhou 730000, Peoples R China.
	2013
会议日期	SEP 21-27, 2013
会议地点	GREECE
关键词	Dust dry deposition Deposition velocity Wind-tunnel experiment PDPA
卷号	1558
DOI	10.1063/1.4825689
页码	1063-1066
英文摘要	The PDPA technique is applied in a wind-tunnel experiment on dust dry deposition. Dust deposition velocity is derived from the PDPA measurements over four different (water, wood, sand and tree) surfaces. A reliable dataset is obtained for the validation of dust deposition schemes. It is found that the deposition velocities for particles larger than 0.5 mu m increase with particle size and friction velocity. For water surface, the dust deposition velocities for the particles in the size range of 0.5 to 10 mu m do not significantly differ from each other and the results are reasonably well predicted by the scheme of Slinn & Slinn (1980). Particles with diameter larger than 3 mu m are effectively deposited by impaction which is considered in the schemes (Slinn & Slinn, 1980; Slinn, 1982) but underestimated. For rough surfaces, the contribution of interception is important to the deposition of particles in the diameter range of 0.5 to 3 mu m. The effect of interception has been so far not adequately represented in the above-mentioned schemes.
会议录	11TH INTERNATIONAL CONFERENCE OF NUMERICAL ANALYSIS AND APPLIED MATHEMATICS 2013, PTS 1 AND 2 (ICNAAM 2013)
会议录出版地	MELVILLE
学科主题	Mathematics ; Physics
语种	英语
ISSN号	0094-243X
WOS记录号	WOS:000331472800253
内容类型	会议论文
源URL	[http://ir.lzu.edu.cn/handle/262010/184191]
专题	土木工程与力学学院_会议论文
通讯作者	Zhang, J (reprint author), Lanzhou Univ, Key Lab Mech Disaster & Environm Western China, Minist Educ China, Lanzhou 730000, Peoples R China.
推荐引用方式 GB/T 7714	Zhang, J,Shao, YP,Huang, N,et al. Wind-tunnel Experiment on Dust Dry Deposition[C]. 见:. GREECE. SEP 21-27, 2013.