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Indexed by:期刊论文

Date of Publication:2010-04-01

Journal:JOURNAL OF HYDRODYNAMICS

Included Journals:SCIE、EI

Volume:22

Issue:2

Page Number:229-240

ISSN No.:1001-6058

Key Words:wave-current interaction; floating bodies; time-domain simulation; Time-domain Higher-Order Boundary Element Method (THOBEM)

Abstract:A Time-domain Higher-Order Boundary Element Method (THOBEM) is developed for simulating wave-current interactions with 3-D floating bodies. Through a Taylor series expansion and a perturbation procedure. the model is formulated to the first-order in the wave steepness and in the current velocity, respectively The boundary value problem is decomposed into a steady double-body flow problem and an unsteady wave problem Higher-order boundary integral equation methods are then used to solve the proposed problems with a fourth-order Runge-Kutta method for the time marching An artificial damping layer is adopted to dissipate the scattering waves Different from the other time-domain numerical models, which are often focused on the wave-current interaction with restrained bodies, the present model deals with a floating hemisphere. The numerical results of wave forces, wave run-up and body response are all in a close agreement with those obtained by frequency-domain methods. The proposed numerical model is further applied to investigate wave-current interactions with a floating body of complicated geometry. In this work, the regular and focused wave combined with current interacting with a truss-spar platform is investigated