Journal
INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN FLUIDS
Volume 43, Issue 1, Pages 1-23Publisher
JOHN WILEY & SONS LTD
DOI: 10.1002/fld.595
Keywords
free-surface flow; non-hydrostatic pressure; Keller-box scheme; wave propagation
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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.
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