Two dimensional fully nonlinear numerical wave tank based on the BEM
Zhe Sun , Yongjie Pang , Hongwei Li
Journal of Marine Science and Application ›› 2012, Vol. 11 ›› Issue (4) : 437 -446.
Two dimensional fully nonlinear numerical wave tank based on the BEM
The development of a two dimensional numerical wave tank (NWT) with a rocker or piston type wavemaker based on the high order boundary element method (BEM) and mixed Eulerian-Lagrangian (MEL) is examined. The cauchy principle value (CPV) integral is calculated by a special Gauss type quadrature and a change of variable. In addition the explicit truncated Taylor expansion formula is employed in the time-stepping process. A modified double nodes method is assumed to tackle the corner problem, as well as the damping zone technique is used to absorb the propagation of the free surface wave at the end of the tank. A variety of waves are generated by the NWT, for example; a monochromatic wave, solitary wave and irregular wave. The results confirm the NWT model is efficient and stable.
numerical wave tank (NWT) / boundary element method (BEM) / nonlinear free surface condition / mixed Eulerian-Lagrangian / damping zone / cauchy principle value(CPV)
| [1] |
Cao YS, Beck RF, Schultz WW (1993). An absorbing beach for numerical simulations of nonlinear waves in a wave tank. 8th International Workshop of Water Wave and Floating Bodies, Newfoundland, Canada, 17–20. |
| [2] |
|
| [3] |
|
| [4] |
|
| [5] |
|
| [6] |
|
| [7] |
|
| [8] |
|
| [9] |
|
| [10] |
|
| [11] |
|
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