漫水湾闸坝工程海漫水毁整治设计及数值模拟

Design and Numerical Simulation of Damaged Damage in Manshuiwan Dam Project

大桥水库灌区漫水湾闸坝工程多年来经洪水冲刷,损毁严重,危及工程的安全运行。通过理论计算分析海漫段水毁的主要原因,提出整治方案,选取较为可行的标准k-ε模型、VOF二相流法、有限体积法及SIMPLE算法作为研究漫水湾闸坝流场的模拟手段,利用FLUENT软件对漫水湾闸坝下游海漫段整治前后的闸坝泄流进行三维流场数值模拟,分别得到校核工况下闸坝下游整治前后的泄流流态和压力场等模拟结果;分析表明:整治后海漫段水流的消能情况基本消失,受力情况和流态情况均有较大的改善;研究结果可为闸坝工程的水毁修复提供参考。

Daqiao Reservoir Irrigation District Manshuiwan dam project over the years by the flood erosion, serious damage, endangering the safe operation of the project. Through the theoretical calculation and analysis of the main causes of water damage, the proposed method is proposed, and the feasible standard k- ε model, VOF two-phase flow method, finite volume method and SIMPLE algorithm are selected as the simulation The FLUENT software was used to simulate the three-dimensional flow field of the dam discharge before and after the renovation of the Manchuwan section of the downstream of the Manchuwan dam. The discharge flow and pressure field before and after the downstream of the dam were obtained under the check condition The results show that the energy dissipation of the water flow after the remediation is basically gone, and the stress and flow conditions are greatly improved. The results can provide a reference for the dam restoration.