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论文类型：期刊论文
发表时间：2008-02-01
发表刊物：JOURNAL OF HYDRODYNAMICS
收录刊物：EI、SCIE
卷号：20
期号：1
页面范围：108-116
ISSN号：1001-6058
关键字：unstructured grid; non-hydrostatic; k- epsilon turbulence model; free surface flow
摘要：The three-dimensional Navier-Stokes equations were solved with the fractional step method where the hydrostatic pressure component was determined first, while the non-hydrostatic component of the pressure was computed from the pressure Poisson equation in which the coefficient matrix is positive definite and symmetric. The eddy viscosity was calculated from the efficient k- epsilon turbulence model. The resulting model is computationally efficient and unrestricted to the CFL condition. Computations with and without hydrostatic approximation were compared for the same cases to test the validity of the conventional hydrostatic pressure assumption. The model was verified against analytical solutions and experimental data, with excellent agreement.