珊瑚礁坪地形上波生流的流场特性分析  

Numerical analysis on the fluid field of coral reefs based on the SPH method

作　　者：王国玉[1] 赵钦阳 葛聪 陈戈[1] WANG Guoyu;ZHAO Qinyang;GE Cong;CHEN Ge(State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China)

机构地区：[1]大连理工大学海岸和近海工程国家重点实验室,辽宁大连116024

出　　处：《河海大学学报（自然科学版）》2018年第3期253-259,共7页Journal of Hohai University(Natural Sciences)

基　　金：国家自然科学基金(51679032)

摘　　要：将珊瑚礁坪地形简化为向海坡为1∶1的陡坡,基于SPH方法,建立了波浪在珊瑚礁坪地形上传播的数值波浪水槽,模拟规则波浪在珊瑚礁坪地形上的传播变化过程,分析珊瑚礁坪附近的流场特性,并将数值模拟结果与实验室观测结果进行对比。结果表明,在波浪传播过程中由于水深变浅,波浪发生变形和破碎,在珊瑚礁坪顶周围的水体中将产生一个与波浪传播方向相同的流动。In this study,the slope of coral reef has a steep reef-face（ V ∶ H = 1 ∶ 1）. Utilizing the Smoothed Particle Hydrodynamics（ SPH） method,the wave propagation and the fluid field around the reef crest were analyzed. After that,the results have been compared to the experiment results. The simulations show that the wave deformation and breaking occur in the process of wave propagation due to the shoaling. As a result of the nonlinear influence,the flow withsame direction as the wave propagation will be observed around the reef crest. This paper compares the results of numerical simulation and laboratory observations,and proved that there is a greet agreement between them.

关 键 词：珊瑚礁 斜坡平台 SPH 流场分析 数值水槽 波浪传播 

分 类 号：P731.2[天文地球—海洋科学]