摘要
目前运用两相流理论和数学模型研究挟沙水流问题是一个重要研究方向。涉及到两相流模型有双流体模型和混合模型。考虑到方程组的封闭性,双流体模型的相间作用力往往只考虑黏性阻力。本文用双流体模型和混合代数滑移模型(MASM)对浑水异重流进行立面二维数值模拟,并将模拟结果和水槽实测値相比较,发现两种模型对异重流形态、泥沙浓度分布的模拟结果差异不大,MASM模拟得到的异重流运动速度与实测值更接近。因此,MASM更适宜浑水异重流的数值模拟。
Based on the theory of water-sediment two-phase flow,Eulerian multiphase model and mixture model were developed.A full Eulerian multiphase model may not be feasible for its complexity,so a simplified Eulerian multiphase model was applied in which the interface force of two phases only depends the friction.The mixture algebraic slip model（MASM） was developed from the Eulerian multiphase model.The simplified Eulerian multiphase model and MASM were applied to simulate 2-D turbid density current in a reservoir.By the analysis of the results of numerical simulation and experiment,MASM is more suitable for the turbid density current.The main reason is that the following behavior of suspended particles in MASM is better than in the simplified Eulerian multiphase model.
出处
《水动力学研究与进展（A辑）》
CSCD
北大核心
2010年第1期76-84,共9页
Chinese Journal of Hydrodynamics
关键词
浑水异重流
双流体模型
混合代数滑移模型
跟随性
turbid density current
Eulerian multiphase model
mixture algebraic slip model
following behaviors
