| 不同地表温度的热扩散对风沙流的影响 |
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| 引用本文： | 蔺海晓,岳高伟.不同地表温度的热扩散对风沙流的影响[J].气候与环境研究,2010,15(2):191-198. |
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| 作者姓名： | 蔺海晓 岳高伟 |
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| 作者单位： | 河南理工大学土木工程学院,焦作,454003 |
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| 基金项目： | 河南省工程力学重点学科509919 |
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| 摘 要： | 作者建立了描述在来流水平风场和由于地表热扩散产生的垂向风场联合作用下的风沙流发展过程的基本方程。通过定量分析表明,地表温度引起的热扩散对风沙流发展过程的影响十分明显。在此基础上,给出地表热扩散对风沙流中输沙率以及风沙流达到充分发展的时间等的影响规律。
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| 关 键 词： | 热扩散，输沙率，风沙运动，多场耦合 |
Influence of the Thermal Diffusion of the Sand Bed on the Evolutive Process of the Wind Blown Sand Flux |
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| Lin Haixiao and Yue Gaowei.Influence of the Thermal Diffusion of the Sand Bed on the Evolutive Process of the Wind Blown Sand Flux[J].Climatic and Environmental Research,2010,15(2):191-198. |
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| Authors: | Lin Haixiao and Yue Gaowei |
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| Institution: | LIN+Haixiao+,+YUE+Gaowei+School+of+Civil+Engineering,Henan+Polytechnic+University,Jiaozuo+454003 |
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| Abstract: | A theoretical model with considering the thermal diffusion (TD) from the sand-bed is used to study the effect of the TD during the evolution of the wind-blown sand flux. And in the wind-blown sand flux the coupling interaction is taken into consideration among wind speeds in the vertical and horizontal directions, and the sand movement. The numerical results show that it is quite obvious for the evolutive process of the sand-driving wind affected by the TD of the bed. When the wind-blown sand flux reaches a... |
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| Keywords: | thermal diffusion transport rate of sands movement of saltating sand coupling of several fields |
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