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學生專區

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112/03/21 14:00 中山大學海洋環境及工程學系 李政賢教授 演講

演講公告
張貼人:網站管理員公告日期:2023-03-15
 
演 講 公 告
 

講題:Multi-phase modeling of sediment transport

 

主講人:李政賢 教授

中山大學海洋環境及工程學系


 
時間:3月21日(星期二)下午2點
 

地點:中央大學科學一館S-325教室
 

摘要:
 
  Sediment transport is, by nature, a multi-phase phenomenon involving fine grain-scale processes (such as collisions and prolonged contacts between particles) and fluid-particle interactions. In the last decade, multi-phase models have gained attention; however, there are still many limitations in these models. For example, the shear-induced volume change and the resultant pore-pressure feedback cannot be well produced, which play an important role in subaqueous landslide. This study aims to develop a new multi-phase model for sediment transport based on an Eulerian-Eulerian framework with a new evolution equation determining the static solid pressure resulting from prolonged contact between particles. The evolution equation can effectively describe the shear-induced volume change in plane-shear configurations. The multi-phase model can capture the typical phenomenon associated with pore-pressure feedback: the different collapse processes for differently packed columns. Finally, the multi-phase model is applied to simulate failure angle of subaqueous slopes.
 
最後修改時間:2023-03-15 AM 11:10

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