河道整治工程中鱼道水利设施紊流特征研究

Study on seepage characteristics of water conservancy facilities in fishway in river regulation project

以ANSYS Workbench为建模分析平台,对涵洞式鱼道开展不同工况条件下紊流特性分析。并以水流速度、紊动能、漩涡、湍流耗散率四个参数为紊流特性分析对象,获得了涵洞内在不同水流方向上参数变化趋势及量值区间,并对比了各个工况条件下参数演化差异,明确了涵洞式鱼道只有在低坡度、一定埋深条件下紊流特性才处于最佳,亦是有益于鱼类的生存繁衍。本研究为涵洞式鱼道紊流特性数值模拟分析提供了一定的参考依据。

Using ANSYS Workbench as the modeling analysis platform,the culvert fishway was analyzed for turbulence characteristics under different working conditions,and four parameters of water flow velocity,turbulent kinetic energy,vortex,and turbulence dissipation rate were used as the turbulence characteristics analysis object,obtained the change trend and value interval of each parameter in the culvert in different water flow directions,compared the evolution difference of each parameter under various working conditions,and clarified that the culvert fishway only has turbulence characteristics under the conditions of low slope and certain depth.Only at the best is also beneficial to the survival and reproduction of fish.The thesis provides a certain reference basis for the numerical simulation analysis of culvert fishway turbulence characteristics.