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文章运用FLUENT软件,以某城市景观河道的水流为研究对象,对小型实用堰的过堰水流进行了数值模拟研究。对过堰水流进行了数值模拟,采用FLUENT计算软件中的RNG k-ε模型(即重整化群k-ε模型)建立了三维水-气两相流模型,由于过堰水流水气交界面的波动较大,故选择VOF方法对水流的水气交界面进行跟踪模拟。控制方程的离散方法则采用有限体积法,并采用迎风差分格式进行空间离散。
In this paper, FLUENT software was used to study the water flow in a river of urban landscape. The overflow weir of small practical weir was numerically simulated. A three-dimensional water-gas two-phase flow model was established by using the RNG k-ε model (ie renormalization group k-ε model) in the FLUENT calculation software. Since the cross-weir water-water interface Of the larger fluctuations, so choose the VOF method of water and water vapor interface to track simulation. The discretization method governing the equations uses the finite volume method and uses the upwind difference scheme for spatial discretization.