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Numerical Analysis of Internal Waves in Two-layer Fluids by a Two-domain Boundary Element Method  

Koo, Weon-Cheol (School of Naval Architecture and Ocean Engineering, University of Ulsan)
Kim, Mi-Geun (School of Naval Architecture and Ocean Engineering, University of Ulsan)
Publication Information
Journal of Ocean Engineering and Technology / v.23, no.4, 2009 , pp. 6-11 More about this Journal
Abstract
In this study, the internal waves in two-density layered fluids were analyzed using the Numerical Wave Tank (NWT) technique in the frequency domain. The NWT is based on a two-domain Boundary Element Method with the potential fluids using the whole-domain matrix scheme. From the mathematical solution of the two-domain boundary integral equation, two different wave modes could be classified: a surface wave mode and an internal wave mode, and each mode were shown to have a wave number determined by a respective dispersion relation. The magnitudes of the internal waves against surface waves were investigated for various fluid densities and water depths. The calculated results are compared with available theoretical data.
Keywords
Numerical wave tank; Surface wave; Internal wave; Two-layer fluids; Two-domain boundary element method;
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