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Thermodynamic Effects on Particle Movement: Wind Tunnel Simulation Results

NIU Qinghe QU Jianjun ZHANG Kecun LIU Xianwan

NIU Qinghe, QU Jianjun, ZHANG Kecun, LIU Xianwan. Thermodynamic Effects on Particle Movement: Wind Tunnel Simulation Results[J]. 中国地理科学, 2012, 22(2): 178-187.
引用本文: NIU Qinghe, QU Jianjun, ZHANG Kecun, LIU Xianwan. Thermodynamic Effects on Particle Movement: Wind Tunnel Simulation Results[J]. 中国地理科学, 2012, 22(2): 178-187.
NIU Qinghe, QU Jianjun, ZHANG Kecun, LIU Xianwan. Thermodynamic Effects on Particle Movement: Wind Tunnel Simulation Results[J]. Chinese Geographical Science, 2012, 22(2): 178-187.
Citation: NIU Qinghe, QU Jianjun, ZHANG Kecun, LIU Xianwan. Thermodynamic Effects on Particle Movement: Wind Tunnel Simulation Results[J]. Chinese Geographical Science, 2012, 22(2): 178-187.

Thermodynamic Effects on Particle Movement: Wind Tunnel Simulation Results

Thermodynamic Effects on Particle Movement: Wind Tunnel Simulation Results

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出版历程
  • 刊出日期:  2012-03-05

Thermodynamic Effects on Particle Movement: Wind Tunnel Simulation Results

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. 

English Abstract

NIU Qinghe, QU Jianjun, ZHANG Kecun, LIU Xianwan. Thermodynamic Effects on Particle Movement: Wind Tunnel Simulation Results[J]. 中国地理科学, 2012, 22(2): 178-187.
引用本文: NIU Qinghe, QU Jianjun, ZHANG Kecun, LIU Xianwan. Thermodynamic Effects on Particle Movement: Wind Tunnel Simulation Results[J]. 中国地理科学, 2012, 22(2): 178-187.
NIU Qinghe, QU Jianjun, ZHANG Kecun, LIU Xianwan. Thermodynamic Effects on Particle Movement: Wind Tunnel Simulation Results[J]. Chinese Geographical Science, 2012, 22(2): 178-187.
Citation: NIU Qinghe, QU Jianjun, ZHANG Kecun, LIU Xianwan. Thermodynamic Effects on Particle Movement: Wind Tunnel Simulation Results[J]. Chinese Geographical Science, 2012, 22(2): 178-187.

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