溢流丁坝附近自由水面的实验研究与数值模拟

Experimental study and numerical simulation of flow in the vicinity of a submerged spur-dike

在整治河道中,丁坝的存在使得丁坝附近自由水面及流场的三维特性非常突出,对这种三维特性非常突出的自由水面和流场的模拟在计算流体力学的应用中一直是个难点。作者对溢流丁坝附近的自由水面进行了实验研究,应用VOF方法和标准的k～ε模型耦合求解对丁坝附近自由水面的模拟,模拟结果与实测值吻合较好,说明VOF方法可以在丁坝附近自由水面的计算中应用推广。同时,还对溢流丁坝附近的流场进行了预测。

The flow field in the vicinity of a submerged spurdike is studied experimentally.The standard k-ε model and VOF method are jointly used to numerically simulate the flow.The calculated result is in good agreement with experiment data.It shows that The VOF method is feasible for the simulation of this kind of flow.