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| The Probability Density Function Distribution of the Liftoff Velocity in Grain/Bed Collision |
| Luo Shenghu1,2, Wu Jianjun1, Zhang Jiafan2 |
1. Ministry of Education Key Laboratory of Mechanics on Western Disaster and Environment/ School of Civil Engineering and Mechanics, Lanzhou University, Lanzhou 730000, China;
2. Department of Mechanics, Xi'an University of Science and Technology, Xi'an 710054, China |
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Abstract Based on some deterministic laws of the grain/bed collision and the constitution theory, a probability density function distribution of the liftoff velocity is obtained as the Rayleigh distribution. A model between the grains and the wind is suggested in this paper. Then, the windblown sand movement mechanism is discussed as the streamwise sand transport. The comparison with existing experimental results show that the probability density function distribution of the liftoff velocity obtained in this paper is feasible, and a qualitative understanding about the probability density function distribution of the liftoff velocity is obtained.
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Received: 17 August 2013
Published: 20 July 2014
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Corresponding Authors:
武建军（Email：wujjun@lzu.edu.cn）
E-mail: wujjun@lzu.edu.cn
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2014, Vol. 34 
