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Citation:
　Zhen Liu,Bin Teng*,De-zhi Ning and Liang Sun.Using a Time-domain Higher-order Boundary Element Method to Simulate Wave and Current Diffraction from a 3-D Body[J].Journal of Marine Science and Application,2010,(2):156-162.
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Using a Time-domain Higher-order Boundary Element Method to Simulate Wave and Current Diffraction from a 3-D Body

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Title:
Using a Time-domain Higher-order Boundary Element Method to Simulate Wave and Current Diffraction from a 3-D Body
Author(s):
Zhen Liu1;  Bin Teng1*;  De-zhi Ning1; 2 and Liang Sun1
Affilations:
Author(s):
Zhen Liu1;  Bin Teng1*;  De-zhi Ning1; 2 and Liang Sun1
1. State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116023, China 2. State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University, Shanghai 200030, China
Keywords:
wave-current diffraction;  time-domain simulation;  drift force;  higher-order boundary element method (HOBEM)
分类号:
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DOI:
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Abstract:
To study wave-current actions on 3-D bodies a time-domain numerical model was established using a higher-order boundary element method (HOBEM). By assuming small flow velocities, the velocity potential could be expressed for linear and higher order components by perturbation expansion. A 4th-order Runge-Kutta method was applied for time marching. An artificial damping layer was adopted at the outer zone of the free surface mesh to dissipate scattering waves. Validation of the numerical method was carried out on run-up, wave exciting forces, and mean drift forces for wave-currents acting on a bottom-mounted vertical cylinder. The results were in close agreement with the results of a frequency-domain method and a published time-domain method. The model was then applied to compute wave-current forces and run-up on a Seastar mini tension-leg platform.

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Last Update: 2010-06-01