| 国家重点基础研究发展规划 |
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| A General Model Predicting the Streamwise Sand Transport Rate with Saltating Sand Charged |
| HU Wen-wen, WANG Ping |
| Key Laboratory of Ministry of Education for Mechanics on Western Disaster and Environment; School of Civil Engineering and Mechanics, Lanzhou University, Lanzhou 730000, China |
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Abstract The streamwise sand transport rate, also known as wind-blown sand transport rate, is a vital parameter in wind-blown sand flux. Based on numerical simulation of the wind-blown sand saltation with the sand electrification, the streamwise sand transport rates are calculated in this paper. By analyzing the results, a predicting model for wind-blown sand transport rate is established, which is a function of particle diameter, wind velocity and the electrical charge. The predicted mass transport rates agree well with those predicted by many other models as the parameter of charge-to-mass ratio is set to be in the range of (-160 μc·kg-1, 0 μc·kg-1), implying that sand electrification may be one of the reasons of discrepancy among models.
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Received: 10 December 2010
Published: 20 May 2011
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2011, Vol. 31 
