CAJ | 학술논문

基于非结构网格有限体积法的环流模型，建立了相位平均的波流作用模型。模型中考虑了波浪破碎效应的三维辐射应力和波流作用下的扩散系数。通过模拟试验水池中人工岛和天然岛屿周围的波生流，对岛周围波生流的运动特征进行了分析。当波浪垂直入射到均匀斜坡上的人工岛时，岛周围产生回流和对称的环流，流速沿水深分布稍有差异。在天然岛屿中，入射波浪在近岸形成沿岸流。靠近岸线岛屿周围的沿岸流比离岸较远岛屿周围的流速大。这和辐射应力在浅水区域作用有关，岸线区域波生流特征明显。近岸岛屿周围在波浪辐射应力下产生不同的波浪增水，该波浪增水形成压力梯度进而促进岛屿周围的流态变化。
기우비결구망격유한체적법적배류모형，건립료상위평균적파류작용모형。모형중고필료파랑파쇄효응적삼유복사응력화파류작용하적확산계수。통과모의시험수지중인공도화천연도서주위적파생류，대도주위파생류적운동특정진행료분석。당파랑수직입사도균균사파상적인공도시，도주위산생회류화대칭적배류，류속연수심분포초유차이。재천연도서중，입사파랑재근안형성연안류。고근안선도서주위적연안류비리안교원도서주위적류속대。저화복사응력재천수구역작용유관，안선구역파생류특정명현。근안도서주위재파랑복사응력하산생불동적파랑증수，해파랑증수형성압력제도진이촉진도서주위적류태변화。
Based on the unstructured grid finite volume method circulation model, a phase-averaged wave-current model is established. It accounts for the three-dimensional wave radiation stress with the surface roller and the mixing coefficients in-volving the wave-current interaction. The movement characteristics of wave-induced currents are investigated by simulating the wave-induced currents around the artificial island according to a small-scale experiment and the nearshore currents around islands in large-scale coastal waters. The return flow and the symmetrical circulation occur around the artificial island as the normal wave propagates towards the uniform beach, and there is a little difference in the velocity along the water depth. In the application of the coastal waters, there are regular longshore currents around islands when the incident waves propa-gate in the zone. The longshore currents are larger around the islands closed to the shoreline than those around the offshore islands. It is related to the wave radiation stress, which makes the wave-induced currents larger in the nearshore. The wave set-up occurs around islands due to the wave radiation stress, which leads to the pressure gradient and changes the flow pat-tern.