低佛氏数对冲式消力池紊流水流的数值模拟

Numerical simulation of turbulence flow for the still basinwith opposed jet flow under low Froude number

采用RNGk-ε紊流模型和体积函数法(volumeoffluid,VOF)追踪自由水面的方法,数值模拟了低佛汝德数对冲式消力池中的水流结构,并与试验进行了比较,结果显示其水流特性、断面流速、压力分布及自由水面位置与物理模型试验吻合良好,此成果有助于了解对冲式消力池的水流结构,为工程设计提供依据.

The RNG k-ε turbulence model and the method of VOF (volume of fluid) are applied to simulate the stilling basin with opposed jet flow under the low Froude numbers in this paper. The computed results give out the rational characteristics of the flow and the free surface. The comparison between the numerical results and experiment date shows a satisfactory agreement.