Recent progress on understanding and modeling sediment transport in coastal environment

摘要：

We present a two-phase flow model for sand transport that uses a collisional theory and a k-ε fluid turbulence closure to model the sediment-phase stresses and fluid-phase stresses, respectively.This two-phase flow model also considers the interaction between fluid turbulence and sand particlemotions. Model-data comparisons using data measured for oscillatory sheet flows in U-tubes andfor open channel sheet flow demonstrate the models good predictive ability. Such a model is able toprovide sediment transport information both in the near-bed region and throughout the water column.Finally, examples for the washout of a small heap of sand under unidirectional ows are shown.

关键词： sediment transport turbulence two-phase ow modeling

作者: P.L.F.Liu L.O.Amoudry

作者单位: School of Civil and Environmental Engineering, Cornell University, Ithaca, NY14853, USA

会议类型: 国际会议

会议名称: The Fifth International Conference on Fluid Mechanics(第五届国际流体力学会议)

会议地点: 上海

会议语种:英文

在线出版日期: 2007-08-15（万方平台首次上网日期，不代表论文的发表时间）