An accurate and efficient finite-difference algorithm for non-hydrostatic free-surface flow with application to wave propagation

被引:290
作者
Stelling, G
Zijlema, M
机构
[1] Delft Univ Technol, Fac Civil Engn & Geosci, Fluid Mech Sect, NL-2628 CN Delft, Netherlands
[2] Natl Inst Coastal & Marine Management RIKZ, NL-2500 EX The Hague, Netherlands
关键词
free-surface flow; non-hydrostatic pressure; Keller-box scheme; wave propagation;
D O I
10.1002/fld.595
中图分类号
TP39 [计算机的应用];
学科分类号
081203 ; 0835 ;
摘要
A numerical technique is presented for the approximation of vertical gradient of the non-hydrostatic pressure arising in the Reynolds-averaged Navier-Stokes equations for simulating non-hydrostatic free-surface flows. It is based on the Keller-box method that take into account the effect of non-hydrostatic pressure with a very small number of vertical grid points. As a result, the proposed technique is capable of simulating relatively short wave propagation, where both frequency dispersion and non-linear effects play an important role, in an accurate and efficient manner. Numerical examples are provided to illustrate this; accurate wave characteristics are already achieved with only two layers. Copyright (C) 2003 John Wiley Sons, Ltd.
引用
收藏
页码:1 / 23
页数:23
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