台阶溢流坝的三维水力特性数值模拟

本文简单介绍了台阶式消能工在国内外的应用和发展前景,并以太湖水库工程为例,通过流体仿真软件对该工程的台阶式溢流坝和光滑溢流坝进行数值仿真,对比研究两种溢流坝体形的消能效果、压强场和速度场等.结果表明,台阶式溢流坝的消能主要集中在台阶上,相对于光滑溢洪道,因其减小对下游的冲刷而降低了工程投资.

3D-numerical simulation of air-water flow on the stepped spillway dam

The application and development prospects of the stepped dissipator at home and aboard is simply introduced in this paper.And taking Taihu reservoir project as an example,by fluid simulation software the numerical simulation was made about the stepped spillway dam and the smooth spillway dam for this project.The energy dissipation effect,pressure field and velocity field of this two spillway dams are compared and analyzed.The results show that the energy dissipation of the stepped spillway dam concentrates on the stepped faces and its energy dissipation ratio is bigger than the smooth energy spillway dam.The project investment was reduced because of its lowering the erosion to downstream.