基于边界元方法的二维全非线性数值波浪水槽(英文)

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...

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Bibliographic Details
Published in:船舶与海洋工程学报：英文版 2012 (4), p.437-446
Main Author: 孙哲 庞永杰 李宏伟
Format: Article
Language:English
Subjects:
BEM
boundary
cauchy
condition
damping
element
Eulerian-Lagrangian
free
method
nonlinear
numerical
NWT
principle
surface
tank
value(CPV)
wave
zone
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Summary: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.
ISSN:1671-9433
1993-5048