CAJ | 학술논문

为研究近岸波浪破碎引起的复杂波生环流问题，本文基于三维水动力模型，引入随水深变化的辐射应力项，同时考虑波浪对水体紊动影响以及波流联合作用下的底部切应力，得到了波生流三维数值模型；模型基于非结构化网格拟合复杂的岸线变化，同时采用有限体积法进行数值离散。模拟了波浪浅化和破碎引起的斜坡地形上的垂向环流、人工岛后的平面环流以及波状地形下的裂流和沿岸流现象。结果表明：波致辐射应力的二维和深度分布不均会驱动平面和垂向的波生环流；同时与实验的比较，验证了本模式在计算近岸波生三维环流上的精确性和有效性。
위연구근안파랑파쇄인기적복잡파생배류문제，본문기우삼유수동력모형，인입수수심변화적복사응력항，동시고필파랑대수체문동영향이급파류연합작용하적저부절응력，득도료파생류삼유수치모형；모형기우비결구화망격의합복잡적안선변화，동시채용유한체적법진행수치리산。모의료파랑천화화파쇄인기적사파지형상적수향배류、인공도후적평면배류이급파상지형하적렬류화연안류현상。결과표명：파치복사응력적이유화심도분포불균회구동평면화수향적파생배류；동시여실험적비교，험증료본모식재계산근안파생삼유배류상적정학성화유효성。
In this paper, the complex wave?induced nearshore circulation caused by broken waves was studied. Based on the three?dimensional (3D) hydrodynamic ocean model, a 3D wave?induced current model was built by taking the depth?dependent radiation stress into current fields and considering the wave?induced turbulence and the bottom shear stress under the combined action of wave and current. Taking into consideration unstructured meshes, the model was used to fit the change of complicated shorelines, and at the same time was discretized numerically by the finite?volume method. Using the proposed model, the vertical circulation in the slope terrain induced by wave shoaling and breaking, the planar circulation after the artificial island, the rip current, and alongshore current un?der the wavy terrain were simulated. The results showed that the wave?induced horizontal and vertical circulation will be driven by inhomogeneous distribution of the wave?induced radiation stress along two?dimension and depth. The simulation results are compared with the experimental data to validate the accuracy and availability of the pres?ent model on simulating the 3D wave?induced nearshore circulation.