点击次数：

发表时间：2022-10-10

发表刊物：船舶力学

所属单位：建设工程学部

期号：9

页面范围：1072-1084

ISSN号：1007-7294

摘要：A double-layer depth-averaged Boussinesq-type model for wave propagation over an un-even bottom is derived. The governing equations are formulated in two depth-averaged velocities within each water layer and of the second-order fully nonlinearity. To improve the model properties, high-er-order terms are introduced to momentum equations and theoretical analyses are made to investi-gate the linear dispersive and nonlinear properties. The optimized model equations show good dis-persion property up to kh≈6 within 0.3%error, and the second nonlinear characteristics are optimized to kh≈6 within 10%error. Based on finite difference method and a composite fourth order Adams-Bashforth-Moulton time integration, one-dimensional equations are solved numerically on non-stag-gered grids. Regular wave evolution over a submerged breakwater is simulated and the computation-al results are compared with the experimental data, the good agreements are found.

备注：新增回溯数据