Nonlinear numerical simulation of wave action on objects with narrow gap

被引：0
|
作者：
Ning D.-Z. [1 ]
Su X.-J. [1 ]
Teng B. [1 ]
机构：
[1] State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian
来源：
Chuan Bo Li Xue/Journal of Ship Mechanics | 2017年 / 21卷 / 02期
关键词：
Fluid resonance; Higher-order boundary element; Narrow gap; Numerical wave flume; Source generation technique;
D O I：
10.3969/j.issn.1007-7294.2017.02.003
中图分类号：
学科分类号：
摘要：
Based on a time-domain higher-order boundary element method (HOBEM) with wave generation by the inner-domain source, a two-dimensional time-domain numerical wave flume is developed to investigate the fluid resonance due to the interaction between wave and objects with a narrow gap. In the numerical model, the artificial damping is introduced into the fluid at gap and the fully nonlinear boundary conditions are satisfied on the instantaneous free surface. In the solving process, the mixed Eulerian-Lagrangian method is adopted to track the transient water surface and the 4th Runga-Kutta technique is used to refresh the velocity potential and free surface at the next time step. The acceleration potential technique is adopted to calculate the transient wave loads along the wetted object surface. By comparison with the published experimental and numerical data, the proposed model is validated. Numerical experiments are performed to study the effects of the incident wave nonlinearity on reflection wave height, transmission wave height, wave height at narrow gap, wave loads and pressure distribution at resonance. © 2017, Editorial Board of Journal of Ship Mechanics. All right reserved.
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页码：143 / 151
页数：8
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