【摘要】 关于泥沙异重流研究多采用分析和观测的方法 ,数学模型计算较少 .本文中首先结合流体运动方程和泥沙运动特性 ,导出平面二维泥沙异重流的运动方程 ;然后 ,进行水槽试验模拟异重流运动计算 ,并与试验测验结果进行对比 ,验证了数学模型的适用性更多还原

【Abstract】 Based on governing equations of fluid flow, a depth averaaged two dimensional equations of sediment density current have been derived. Using the fractional step method as the discrete scheme, a numerical model is built and is used to calculate a sediment density current occurring in a flume. The calculated results are tested against experimental data.更多还原