Numerical simulation of three-dimensional breaking waves |
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| Authors: | Hideaki Miyata Akihiro Kanai Takafumi Kawamura Jhong-Chun Park |
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| Institution: | (1) Department of Naval Architecture and Ocean Engineering, School of Engineering, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, 113 Tokyo, Japan;(2) Department of Naval Architecture and Ocean Engineering, Inha University, Namgu Yong Hyun Dong 253, Incheon, Republic of Korea |
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| Abstract: | Three-dimensional (3D) wave breaking around bodies of complex geometry has been numerically investigated by use of two types
of Navier-Stokes solvers, namely the finite-difference and the finite-volume methods employing rectangular and curvilinear
coordinate systems, respectively. Both methods employ the density-function technique to capture the free surface location
and can cope with complicated free surface configurations such as breaking waves. The accuracy of the density-function method
is examined through the comparison with experimental results, and it is confirmed to be satisfactory when the grid spacing
and the time increment are sufficiently small.
New computational methods are applied to several problems including 3D breaking waves around ships and wave diffraction around
offshore structures. The computed results show good agreement with experimental results indicating that wave breaking phenomena
are successfully simulated. The qualitative accuracy, however, could be improved by including the dissipating effect of breaking
waves. |
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| Keywords: | density-function method breaking waves finite-difference method finite-volume method |
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