NUMERICAL STUDY ON WAVE MOTIONS OVER DIFFERENT SUBMERGED DYKES
The submerged dyke plays an important role in beach protection and accretion promotion. The efficiency and economics of the project are influenced by the type and height of submerged dyke. In this paper, the wave motions around different submerged dykes are investigated by a numerical wave model which based on RANS and VOF method. The types of submerged dykes include rectangular-type, trapezoidal-type, semicircular-type, and flute-type. Through the numerical simulation, the characteristics of the wave breaker over submerged dyke, breaker type and the change of wave height over the dyke are analyzed under the action of irregular waves respectively. The changes of flow field and the distribution of wave height are analyzed to know how the dyke dissipates wave energy and to determine the optimized submerged dyke type. The factors that influence the wave energy dissipating effect, such as relative freeboard (F/Hi), breaker position, relative dyke crest width (B/Hi), wave steepness (H/L), and the types of submerged dyke, are also discussed.
submerged dyke structure type wave breaking breaker type transmission coefficient the relative freeboard
Li Changliang Xie Yuanyuan
College of Engineering, Ocean University of China, 238 Songling Road, QingDao, 266100,China College of Engineering, Ocean University of China, 238 Songling Road, QingDao,266100, China
国际会议
第四届亚太地区海岸会议(the Fourth International Conference on Asian and Pacific Coasts)
南京
英文
2007-09-21（万方平台首次上网日期，不代表论文的发表时间）