WIT Press


Investigation Of Numerical Wave Channel Concerning Absorbing Boundary

Price

Free (open access)

Paper DOI

10.2495/MB010161

Volume

29

Pages

10

Published

2001

Size

741 kb

Author(s)

R.S. Shih, C.R. Chou, W.Y. Han

Abstract

Investigation of numerical wave channel concerning absorbing boundary R. S. Shih\ C. R. Choi/ & W. Y. * Department of Civil Engineering, Tung Nan Institute of Technology, Taiwan. 'Department of Harbor and River Engineering, / q/^gncw/fwre, Abstract Dissipating technics such as sponges, absorbing beaches had become an interesting technique for the simulations of numerical wave tank, recently. The simulation of a two dimensional wave tank considering absorbing boundary are investigated in this study by means of boundary element method. With the time histories of water elevation measured by a pseudo wave gage, the absorption coefficient /^ was verified by studying the case of solitary wave propagating over the water tank with a sponge zone fixed behind, where the sponge zone was divided into a smoothly varied //area and a constant //area. The purpose is to adopt an optimum combination of absorption coefficient and sponge length to minimize the reflection

Keywords