ABSTRACT

In this study, the hydrodynamic performance of a partially submerged vertical slotted barrier was investigated on the basis of an analytical and numerical approach in regular waves. The matched eigenfunction expansion method (MEEM) was used to solve the boundary value problem including the porous boundary condition. Herein the drag coefficient representing the energy dissipation was estimated by the best possible fitting curve to CFD results for a 2D simplified channel model. A 3D implicit unsteady turbulent model based on incompressible Reynolds-averaged Navier–Stokes (RANS) equations was adopted to assess the analytical MEEM solutions. The analytical and numerical solutions show relatively good agreement with the experimental results. The presented analytical and numerical model provides a complementary approach to estimate the hydrodynamic performance and horizontal forces of the vertical slotted barrier effectively and practically.

摘要

在这项研究中，基于规则波浪的解析和数值方法研究了部分淹没的垂直开槽障碍的水动力性能。匹配特征函数展开法(MEEM)用于求解包括多孔边界条件在内的边界值问题。在此，代表能量耗散的阻力系数是通过 2D 简化通道模型的 CFD 结果的最佳拟合曲线估算的。采用基于不可压缩雷诺平均纳维-斯托克斯 (RANS) 方程的 3D 隐式非定常湍流模型来评估分析 MEEM 解。解析解和数值解与实验结果显示出较好的一致性。