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