基于 CCHE 的塔什米里克引水枢纽二维水流数值模拟

摘要

基于CCHE软件，采用混合掺长紊流模型，建立了新疆典型河流塔什米里克引水枢纽的二维水流数学模型。针对引水枢纽复杂地形边界的网格独特处理方式，使模拟条件更加贴合实际。模型基于试验，选取了引水枢纽典型流量工况下水流运动进行计算，结果显示了引水枢纽附近的水流流态、流速、流线分布，以及典型断面水面线特征，皆与模型试验吻合良好。表明该数学模型中的零方程紊流模型（混合掺长模型）能够有效地计算低水头引水枢纽水流特性问题，且具有一定的稳定性。%Numerical simulation of 2D model of Täschmirick (typical river of Xinjiang ) diversion project was developed based on CCHE in mixing length turbulence models .For the diversion hub with complex terrain boundary ,unique ap-proach of mesh optimization , detailed structure boundary with a better fitting was realized to reflect the real project boundary .The typical flow of diversion project was selected based on the model test .The calculation results showed the water flow regime ,flow velocity ,the flow line and the characteristics of typical section of the water line in the vicinity of the water diversion project was in good agreement with the experimental data .Calculation results indicated that the zero-equation turbulence model can effectively calculate the water flow behavior of the diversion project and has a certain sta-bility .