Modelling of a hydrokinetic energy converter for flow-induced vibration based on experimental data

摘要: Abstract The VIVACE Converter is a novel and highly efficient renewable energy device in Marine Hydrokinetic (MHK) energy. operational principle of the converter to immerse slender body with bluff cross-section flow extract from transverse oscillations induced by unsteady von Karman vortex street. In general, consists one or more mass–spring–damper oscillators subjected non-linear hydrodynamic forces. These forces are strongly influenced variations inflow velocity, damping, stiffness mass ratio, which turn influence harnessed power efficiency Converter. For reliable model forces, experimental numerical research plays key role study characteristics This focuses on modelling based surrogate methodology, vortex-induced vibration (VIV) galloping region. To avoid excessive experimentation computational inaccuracy, constructed Radial Basis Function (RBF) network using data equal-interval harnessing damping-ratio specified design domain. at different velocities computed present found be consistent results. Optimization performed obtain maximum corresponding distributions both VIV regions. method introduced this provides tool for flow-induced vibrations, can used engineering applications such as optimization MHK converters.