波浪辐射应力理论的应用和研究进展

回顾波浪辐射应力张量的概念，前人的研究成果表明微幅波的辐射应力理论是符合实际的．综述波浪辐射应力理论在海洋流体动力学中的应用，分析该理论在研究近岸流的形成、波浪增水和波浪减水、沿岸流流速的沿程分布、破波带内底部反向流的速度分布、河口海岸泥沙运动、海岸碎波拍和波流相互作用等问题中的应用．总结波浪辐射应力的研究进展，包括考虑有限振幅波和不规则波的辐射应力场以及微幅波辐射应力张量沿水深分布的研究，指出辐射应力张量沿水深分布的研究可以为探讨近岸水动力环境的垂直结构以及完善波流相互作用三维数学模型提供理论基础．为深入考察波浪辐射应力张量沿水深分布情况，提出进一步研究的思路．

Research and Application of Wave-Induced Radiation Stress Theory

The concept of small amplitude wave Induced radiation stress is reviewed.The achievements in this aspect show that the small amplitude wave induced radiation stress theory is in conformity with reality.The application of wave induced radiation stress theory to oceanic fluid dynamics is summarized;the generation of nearshore current,wave setup and setdown,the distribution of the littoral velocity of longshore current,the vertical variation of undertow in the surf zone,the coastal and estuarine sand transport,the surf beat,and the wave current interaction,are analysed.The new advances in the study on wave induced radiation stress are presented,including the radiation stress induced by the finite amplitude wave and random wave,and the distribution over depth of the small amplitude wave induced radiation stress,which could provide a theoretical basis for inquiring into the vertical structure of nearshore hydrodynamical environment and for consummating the three dimensional mathematical model of wave current interaction.In order to make a thorough investigation on the vertical characteristics of wave induced radiation stress,proposals for further research are put forward.