Indexed by:会议论文

Date of Publication:2018-10-14

Page Number:179-184

Abstract:The potential numerical wave flume is applied in this study to estimate the forces and the moment on a submerged plate in the combined wave-current flow by solving the Laplacian equation based on the higher order boundary element method (HOBEM). The free surface motion is tracked by solving the free surface boundary conditions and is advanced in time using the fourth-order Runge-Kutta scheme. The performance of the potential numerical wave flume is assessed by comparing with the published theoretical results and the experimental measurements. The forces and the moment on the submerged plate alternatively increase to the peak value and then decrease to zero with increasing plate breadth, and they are found to increase with increasing water depth. Additionally, it is found that the use of Doppler shifted solutions is not sufficient for considering the effect of depth-uniform current on waves. The generation of higher harmonics due to a sudden change in water depth and the current-induced form drag are found to make significant contributions to the wave loading. Copyright © 2018 by the International Society of Offshore and Polar Engineers