葛洲坝下游中华鲟产卵场三维流场的数值模拟

The 3-D flow field numerical simulation of Acipenser Sinensis' spawning sites in Gezhouba downstream

将水动力学N-S方程、k-ε紊流数值模型与计算水气两相流的方法VOF相结合,采用控制体积法离散计算区域,建立了葛洲坝下游中华鲟产卵场的三维流场模拟模型。运用该模型模拟了二种不同进口边界条件下葛洲坝下游不足5km江段的三维水流特征。结合中华鲟的生态水力学特性,分析了中华鲟产卵繁殖的流场特性。可从某一方面为三峡水库优化调度提供理论依据和技术参数。

In this paper, a 3-D numerical simulation model is proposed to simulate and analyze the 3-D flow characteristics of natural spawning sites of Acipenser Sinensis by using N-S and k-ε formulas, the volume of fluid method is also used to simulate the two phase flow, and the finite volume method is used to disperse the calculated area. Based on two different inlet boundary conditions, the 3-D flow characteristics in the downstream of Gezhouba dam are simulated. Combined with the ecological hydraulic characteristics of Acipenser Sinensis, the flow field characteristics of natural spawning sites of Acipenser Sinensis are analyzed, in a certain aspect it can provide the technical parameters for the optimizing regulation of Three Gorges reservoir.