抛泥过程中泥沙云团运动的双流体大涡模拟与试验研究  

Two-fluid large eddy simulation and experiment research on the movement of sand clouds during the process of dumping sand

作　　者：程伟平[1] 毛根海[1] 章军军[1] 

机构地区：[1]浙江大学建筑工程学院水利与海洋工程学系,杭州310027

出　　处：《水力发电学报》2006年第3期110-115,共6页Journal of Hydroelectric Engineering

基　　金：国家自然科学基金资助项目(项目编号50179023)

摘　　要：本文采用双流体大涡紊流模型对静水中泥沙云团下落过程进行了研究。该模型针对每一相都建立了一个连续性方程、三个动量方程,并建立了一个体积率和等于1的代数方程。求解过程中采用压力校正法,校正压力根据每相连续性方程按照质量加权计算获得。计算模型成功地预测了云团触底前面积和扩散宽度变化转折点,对拦泥帷幕的设计将有重要意义。试验与计算结果吻合较好,表明本文模型合理。Two-fluid large eddy turbulence model is applied to research the movement of the sand clouds in quiescent water. A continuous equation, three momentum equations are set up for each phase, and the algebraic equation with sum of volume rate amount to one is set up in this model. During the solving process, simple method is adopted, and the pressure is weighted according to every phase＇ s mass. The numerical model successfully predicts the change turning point of clouds area and diffuse width before the clouds touch the bottom, which is specially important to the design of silt-fence. Three groups of experiment results show that the numerical model is efficient.

关 键 词：水力学 抛泥 大涡 双流体模型 

分 类 号：TV14[水利工程—水力学及河流动力学]