VD-PQ; A Velocity-Dependent Viscous Damping Model for Wave-Structure Interaction Analysis

For the analysis and design of coastal offshore structures, viscous loads represent one most influential parameters that dominate their response. Very commonly, potential flow theory is used for identifying excitation wave loads, while damping are taken into consideration as distributed drag type and/or linear quadratic approximated with use motion decay curves structure in specific degrees freedom. In present paper, developed proposed a numerical method addressing wave-structure interaction effects through velocity-dependent model. Results derived by computational fluid dynamics model coupled uses boundary element estimation iteratively every time-step analysis. The solves Navier–Stokes equations considering incompressible flow, second modified Cummins Equation time domain. Details about development coupling (VD-PQ) presented. between different models realized dynamic-link library. applied case energy converter. compared against experimental data relevant predictions. importance instantaneous velocity estimating demonstrated. provides good accuracy to and, at same time, low cost.