流动环境中平面负浮力排放的数值模拟

Numerical simulation on near-field behavior of plane negative buoyant jets in flowing environment

建立流动环境中平面负浮力倾斜射流的二维k-ε湍流模型,采用D M Shahrahani和J D Ditmars(1976)的试验资料进行检验,并且对平面负浮力倾斜射流流动特性进行了数值预报。给出了射流的分区及分区的界限,同时亦给出了涡心断面的物理量的分布及典型断面上湍动能平衡图。

The kε turbulence model is applied to establish the mathematical model of plane negative buoyant inclined jet in flowing environment.The validity of the model is verified by experimental data. The model is applied to predict the flow characteristics. According to the calculation, the flow field can be divided into three regions:jet region, recirculation and horizontal spreading region.The demarcation of these regions is given and the variation law of velocity, density and kinetic energy along the eddy center section is demonstrated.