【摘要】 简要介绍FLUENT软件,回顾其在流场计算中的应用。以电站进水口、宽尾墩和阶梯溢流坝、双弯曲型溢洪道3类工程项目为例,叙述该软件在水利工程中的应用情况。针对水利工程问题边界复杂、水气混掺、自由面较多的特点,分析模型建体、自由面处理和网格划分等主要问题,并采用与模拟形状基本相同的体型、网格线与水流方向基本一致、边界位置远离紊动剧烈区域的方法予以解决。数值模拟表明,FLUENT软件可以处理复杂体型和具有多个自由面的水气二相流问题。更多还原

【Abstract】 The software FLUENT and its application to flow field simulation were briefly introduced. In combination with three kinds of projects for power stations, including the intake, the stepped overflow dam with flaring gate pier, and the double-bend spillway, the applications of FLUENT to hydraulic projects were presented in detail. In consideration of some characteristics of hydraulic projects, such as complex boundary, water-air mixing, and several free water surfaces, some main problems about modeling, free water surface treatment, and grid generation were discussed and solved by adoption of the shape type of the model similar to that of hydraulic structures to be simulated, determination of grid line coinciding with flow direction, and selection of boundary positions far away from the region of turbulent fluctuation. Numerical simulation indicates that FLUENT is able to deal with the water-air two-phase flow problem with complex shape types and several free surfaces.更多还原