方管内固液两相流时均运动特性的数值研究  

Numerical study on the time-averaged movement characters of liquid-particle flows in rectangular pipes

作　　者：刘诚[1] 沈永明[1] 刘晓平[2] 

机构地区：[1]大连理工大学海岸和近海工程国家重点实验室,辽宁大连116024 [2]长沙理工大学水利工程学院,湖南长沙410076

出　　处：《泥沙研究》2007年第4期10-16,共7页Journal of Sediment Research

基　　金：国家重点基金研究发展计划(973计划)项目(编号:2005CB724202);湖南省自然科学基金项目(编号:04JJ3036)

摘　　要：应用三维k-ε-Ap两相湍流模型对垂直和水平方管内挟沙水流的固液两相时均运动特性和颗粒浓度分布规律进行数值研究,讨论了颗粒平均粒径和水流流速对固液两相流时均运动特性和颗粒浓度分布规律的影响。数值计算结果和试验实测结果吻合良好,准确得到了方管内固液两相流的时均运动特性。A three-dimensional κ-ε-Ap model for the two-phase turbulence is constructed to study the time-averaged properties of water-sediment movement in vertical and horizontal rectangular pipes. The simulated results by the model are validated by experimental data. The main parameters in the study are particle diameters and flow velocity which have close relationship with the time-averaged movement characters of liquid-particle flows and the particle concentration distribution. The comparisons between the numerical and experimental results show the numerical model can reasonably simulate liquid-particle flows.

关 键 词：垂直(水平)方管 三维κ-ε-Ap模型 固液两相流 两相湍流模型 时均运动特性 

分 类 号：TV142[水利工程—水力学及河流动力学]