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Applicability Test of a Wetting and Drying Scheme for KU-RLMS Model

KU-RLMS 모형의 잠김-드러남 기법 적용성 평가

  • Received : 2010.08.02
  • Accepted : 2011.04.19
  • Published : 2011.04.28

Abstract

A wetting and drying(WAD) scheme was introduced in KU-RLMS which is a two-dimensional depth-averaged unsteady model, and applicability tests for wetting and drying were performed in this study. WAD scheme in the model uses a mathematically less elegant but numerically easier method to test for dry or wet cells at each time step, then to apply blocking conditions for fluxes at cells' interfaces. WAD scheme introduced in the model was verified against an analytical solution in a frictionless parabolic basin. It was found that there occurs a little phase difference between analytical and numerical solution and little decrease of amplitude of numerical result. I used three test channels having a linear sloping bottom topography, a stepwise bottom topography, and a stepwise, a bumpy and bowl-shaped bottom topography. It could be found that numerical simulation results in test channels have similar shapes of Balzano[4] and Oey[15].

Keywords

WAD(wetting and drying);KU-RLMS;Numerical Scheme;Flood/Ebb

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Cited by

  1. Flow Simulation in a Meandering Channel using a 2-dimensional Numerical Model vol.13, pp.5, 2013, https://doi.org/10.5392/JKCA.2013.13.05.485

Acknowledgement

Supported by : 경성대학교