阶梯溢流坝面流场的紊流数值模拟

Turbulence Numerical Simulation for the Stepped Spillway Overflow

为了详尽地研究阶梯溢流坝面的紊流流场特性 ,采用雷诺应力模型对阶梯溢流坝面上的流场进行紊流数值模拟 ,得到了阶梯坝面水流的速度场、压力场、紊动能和紊动耗散率的分布规律 ,并与实测值进行比较 。

Stepped spillways have become very important in the flood discharge and energy dissipation.Therefore ,the velocity,pressure and other characteristics of the flow on the stepped spillway should be known clearly.But so far the study on the stepped spillway overflow is only based on the model test.In this paper the stepped spillway overflow is simulated on a Reynolds stress turbulence model.The simulation results are analyzed and compared with measured data and the results are satisfactory.