【摘要】：提出了一種將波浪中傾斜板問題等效化簡為波浪中水平板單元組的方法,該方法建立在使用分離變量法求解水工結構邊值問題的基礎上,并使用伽遼金法精確求解連續(xù)邊界條件,確定考慮衰減波態(tài)的速度勢函數(shù),從而求解沒水傾斜板結構的消波性能。等效化簡法計算精度于邊界元法相當,且計算單元數(shù)量少、開銷低。基于二維線性勢波理論,對沒水傾斜板式防波堤消波性能分析顯示,沒水板的傾斜角度、沒水深度與板長是結構消波性能的控制因素:沒水傾斜板防波堤的消波性能優(yōu)于沒水水平板防波堤的消波性能,隨著沒水板結構的傾斜角度增大,沒水傾斜板結構的波浪透射系數(shù)顯著減小,且長板優(yōu)于短板,淺板優(yōu)于深板;與前人的水槽實驗對比顯示,相對沒水深度與波陡影響結構的消波性能,且波陡造成的波浪破碎貢獻了顯著的波能消耗。該結論對板式防波堤的結構配置、優(yōu)化設計有重要意義。
[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.
【作者單位】： 大連海洋大學海洋與土木工程學院;
【分類號】：U656.2
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本文編號：2459788