摘要
本文从水沙两相紊流的双流体数学模型出发,采用直接数值计算的方法,研究了海床面附近边界层内往复流对悬移质泥沙运动的影响。研究方法的有效性通过典型问题的流速分布、紊动能量分布以及泥沙浓度分布的计算结果和实验观测结果的比较得到了良好的验证。本研究还探讨了往复流条件下各类相间作用力的时空变化规律及其对悬移质泥沙运动的影响。
A numerical model based on carefully developed theory for two-phase turbulent flows, suspended sediment transport in the boundary layer near seabed is studied. The model is verified through applying to the computation of typical problems with experimental measurements. It is shown that distribution of the flow velocity, the turbulent energy and the sedi- ment concentration within the boundary layer can be well described.
出处
《水动力学研究与进展（A辑）》
CSCD
北大核心
2007年第4期420-426,共7页
Chinese Journal of Hydrodynamics
基金
国家自然科学基金创新研究群体项目(50221903)
国家自然科学基金面上项目(50379021)
关键词
两相紊流
往复流
悬移质泥沙运动
相间作用力
数值计算
two-phase turbulent flow
oscillatory boundary layer
suspended sediment transport
inter-phase forces
numerical calculation
