:::
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
主講人:李政賢 教授
地點:中央大學科學一館S-325教室
摘要:
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