没水倾斜板式防波堤消波性能分析
发布时间：2019-04-17 21:05
【摘要】：提出了一种将波浪中倾斜板问题等效化简为波浪中水平板单元组的方法,该方法建立在使用分离变量法求解水工结构边值问题的基础上,并使用伽辽金法精确求解连续边界条件,确定考虑衰减波态的速度势函数,从而求解没水倾斜板结构的消波性能。等效化简法计算精度于边界元法相当,且计算单元数量少、开销低。基于二维线性势波理论,对没水倾斜板式防波堤消波性能分析显示,没水板的倾斜角度、没水深度与板长是结构消波性能的控制因素:没水倾斜板防波堤的消波性能优于没水水平板防波堤的消波性能,随着没水板结构的倾斜角度增大,没水倾斜板结构的波浪透射系数显著减小,且长板优于短板,浅板优于深板;与前人的水槽实验对比显示,相对没水深度与波陡影响结构的消波性能,且波陡造成的波浪破碎贡献了显著的波能消耗。该结论对板式防波堤的结构配置、优化设计有重要意义。
[Abstract]:This paper presents a method to simplify the equivalent problem of tilting plate in waves to a group of horizontal plate elements in waves. The method is based on the method of separating variables to solve the boundary value problem of hydraulic structures. The Galerkin method is used to accurately solve the continuous boundary conditions and to determine the velocity potential function considering the attenuation wave state, so as to solve the wave suppression performance of the inclined plate structure without water. The computational accuracy of the equivalent reduction method is similar to that of the boundary element method, and the number of calculation elements is small and the cost is low. Based on the two-dimensional linear potential wave theory, the analysis of the wave suppression performance of the bathymetric sloping plate breakwater shows that the slope angle of the water-free plate is very high. The depth of water and the length of plate are the controlling factors of the damping performance of the structure: the damping performance of the bathymetric slab breakwater is better than that of the anhydrous slab breakwater, and with the increase of the sloping angle of the anhydrous slab structure, The wave transmission coefficient of the inclined plate without water is significantly reduced, and the long plate is superior to the short plate, and the shallow plate is superior to the deep plate. Compared with the previous flume experiments, it is shown that the relative depth of lack of water and the steepness of the wave affect the damping performance of the structure, and the wave fragmentation caused by the steep wave contributes to the significant wave energy consumption. The conclusion is of great significance to the structural configuration and optimum design of slab breakwater.
【作者单位】： 大连海洋大学海洋与土木工程学院;
【分类号】：U656.2
，
本文编号：2459788
[Abstract]:This paper presents a method to simplify the equivalent problem of tilting plate in waves to a group of horizontal plate elements in waves. The method is based on the method of separating variables to solve the boundary value problem of hydraulic structures. The Galerkin method is used to accurately solve the continuous boundary conditions and to determine the velocity potential function considering the attenuation wave state, so as to solve the wave suppression performance of the inclined plate structure without water. The computational accuracy of the equivalent reduction method is similar to that of the boundary element method, and the number of calculation elements is small and the cost is low. Based on the two-dimensional linear potential wave theory, the analysis of the wave suppression performance of the bathymetric sloping plate breakwater shows that the slope angle of the water-free plate is very high. The depth of water and the length of plate are the controlling factors of the damping performance of the structure: the damping performance of the bathymetric slab breakwater is better than that of the anhydrous slab breakwater, and with the increase of the sloping angle of the anhydrous slab structure, The wave transmission coefficient of the inclined plate without water is significantly reduced, and the long plate is superior to the short plate, and the shallow plate is superior to the deep plate. Compared with the previous flume experiments, it is shown that the relative depth of lack of water and the steepness of the wave affect the damping performance of the structure, and the wave fragmentation caused by the steep wave contributes to the significant wave energy consumption. The conclusion is of great significance to the structural configuration and optimum design of slab breakwater.
【作者单位】： 大连海洋大学海洋与土木工程学院;
【分类号】：U656.2
，
本文编号：2459788
本文链接：https://www.wllwen.com/kejilunwen/shuiwenshuili/2459788.html
