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| Large-eddy simulation of the evolution of land form of desert |
| Received:August 18, 2008 |
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| DOI：10.7511/jslx20093013 |
| KeyWord:sand ripples sand dunes large-eddy simulation mixed sand sizes immersed boundary method multiscale |
| Author | Institution |
| 吴锤结 |
大连理工大学工业装备结构分析国家重点实验室工程力学系,大连 |
| 陈剑 |
解放军理工大学理学院流体力学研究中心,南京 |
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| Abstract: |
| The methods of large-eddy simulation, the motion of sand particles with mixed sand sizes and immersed boundary are used to simulate the formation and evolution of sand ripples and sand dunes. When sand ripples appear in the flat ground, at the same time, they also shown up on the sand dunes, which means that the evolution of sand ripples has multiscale nature. Besides, the effects of sand sizes to the formation and evolution of sand ripples and sand dunes, and the effects of sand dunes to the formation and evolution of sand ripples on the flat ground, are analyzed. |
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