干旱区生态环境知识资源中心(Arid): Thermodynamic Effects on Particle Movement:Wind Tunnel Simulation Results

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	Thermodynamic Effects on Particle Movement:Wind Tunnel Simulation Results
	Niu Qinghe; Qu Jianjun; Zhang Kecun; Liu Xianwan
来源期刊	Chinese Geographical Science
ISSN	1002-0063
出版年	2012
卷号	22 期号:2 页码:178-187
英文摘要	Sand/dust storms are some of the main hazards in arid and semi-arid zones. These storms also influence global environmental changes. By field observations, empirical statistics, and numerical simulations, pioneer researchers on these natural events have concluded the existence of a positive relationship between thermodynamic effects and sand/dust storms. Thermodynamic effects induce an unsteady stratified atmosphere to influence the process of these storms. However, studies on the relationship of thermodynamic effects with particles (i.e., sand and dust) are limited. In this article, wind tunnel with heating was used to simulate the quantitative relationship between thermodynamic effects and particle movement on different surfaces. Compared with the cold state, the threshold wind velocity of particles is found to be significantly decrease under the hot state. The largest decrease percentage exceedes 9% on fine and coarse sand surfaces. The wind velocity also has a three-power function in the sand transport rate under the hot state with increased sand transport. Thermodynamic effects are stronger on loose surfaces and fine particles, but weaker on compacted surfaces and coarse particles.
英文关键词	thermodynamic effect threshold wind velocity drifting sand flux structure sand transport rate wind tunnel simulation
类型	Article
语种	英语
收录类别	CSCD
WOS研究方向	Geology
CSCD记录号	CSCD:4505994
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/335136
作者单位	Niu Qinghe, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Key Laboratory of Desert and Desertification,Chinese Academy of Sciences, Lanzhou, Gansu 730000, China.; Qu Jianjun, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Key Laboratory of Desert and Desertification,Chinese Academy of Sciences, Lanzhou, Gansu 730000, China.; Zhang Kecun, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Key Laboratory of Desert and Desertification,Chinese Academy of Sciences, Lanzhou, Gansu 730000, China.; Liu Xianwan, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Key Laboratory of Desert and Desertification,Chinese Academy of Sciences, Lanzhou, Gansu 730000, China.
推荐引用方式 GB/T 7714	Niu Qinghe,Qu Jianjun,Zhang Kecun,et al. Thermodynamic Effects on Particle Movement:Wind Tunnel Simulation Results[J],2012,22(2):178-187.
APA	Niu Qinghe,Qu Jianjun,Zhang Kecun,&Liu Xianwan.(2012).Thermodynamic Effects on Particle Movement:Wind Tunnel Simulation Results.Chinese Geographical Science,22(2),178-187.
MLA	Niu Qinghe,et al."Thermodynamic Effects on Particle Movement:Wind Tunnel Simulation Results".Chinese Geographical Science 22.2(2012):178-187.