摘要
本文用有限容积方法直接求解三维椭圆型流动控制方程,紊流模型釆用有浮力修正的k-ε模型。本文首先将该模型用于有横流情况下岸边等密度排放,以检验本模型和计算程序的正确性,所得结果正确预报了排放口下游的回流区,与文献[4]的结果一致。然后进一步将其应用于有横流情况下的温排水、取水问题,所得结果揭示了流场的内部特征。
In this paper the three dimensional elliptic governing equations are solved by finite-volume methods, and the buoyancy extended version of the widely tested k-ε model is adapted. The method is first applied to calculating the field of side discharge into open channel flow. The results are in good agreement with that of reference 4. Then it is further used to the intake discharge problem which is of a typical layout in cooling-water projects, and the calculated results, which predict in detail the characteristics of flow field, are reasonable.
关键词
热污染
湍流
浮力
数学模型
turbulent flow, thermal pollution, three dimension, numerical model
