A Higher-Efficient Three-Dimensional Numerical Model for Small Amplitude Free Surface Flows  

作　　者：吕彪 

机构地区：[1]Key Laboratory of Engineering Sediment of Ministry of Communications,Tianjin Research Institute for Water Transport Engineering

出　　处：《China Ocean Engineering》2014年第5期617-628,共12页中国海洋工程（英文版）

基　　金：financially supported by the Science and Technology Project of the Ministry of Transport(Grant No.2013328352570);partly supported by the National Natural Science Foundation of China(Grant No.51209112)

摘　　要：A higher-efficient three-dimensional non-hydrostatic model is developed to simulate small amplitude free surface flows based on a staggered unstructured grid. In this model, a fractional step algorithm is adopted to solve the Navier-Stokes equations in two major steps. A top-layer pressure method is proposed to minimize the number of vertical layers and subsequently the computational cost. Three classical examples of small amplitude free surface flows are used to demonstrate the capability and efficiency of the model. The satisfactory results demonstrated the capability and efficiency of modelling a range of small amplitude free surface flows with only a small number of vertical layers.A higher-efficient three-dimensional non-hydrostatic model is developed to simulate small amplitude free surface flows based on a staggered unstructured grid. In this model, a fractional step algorithm is adopted to solve the Navier-Stokes equations in two major steps. A top-layer pressure method is proposed to minimize the number of vertical layers and subsequently the computational cost. Three classical examples of small amplitude free surface flows are used to demonstrate the capability and efficiency of the model. The satisfactory results demonstrated the capability and efficiency of modelling a range of small amplitude free surface flows with only a small number of vertical layers.

关 键 词：higher-efficient NON-HYDROSTATIC small amplitude free surface flows 3D numerical model 

分 类 号：P743[天文地球—海洋科学]