CAJ | 학술논문

假定海床为刚性、不透水边界的传统波浪理论难以模拟多孔介质海床对波浪传播的消能影响.基于完全动力响应模式,建立了能够考虑波浪-海床相互作用的波散方程,通过变动海床厚度、海洋土渗透系数和饱和度及波浪角频率,采用复波数解析方法,围绕量纲一参量波长比和能量衰减因子进行数值计算和参量分析,结果表明波浪在传播过程中会受到海床不同程度的消能作用,表现为波幅衰减及对应的波长变化.
가정해상위강성、불투수변계적전통파랑이론난이모의다공개질해상대파랑전파적소능영향.기우완전동력향응모식,건립료능구고필파랑-해상상호작용적파산방정,통과변동해상후도、해양토삼투계수화포화도급파랑각빈솔,채용복파수해석방법,위요량강일삼량파장비화능량쇠감인자진행수치계산화삼량분석,결과표명파랑재전파과정중회수도해상불동정도적소능작용,표현위파폭쇠감급대응적파장변화.
Conventional ocean wave theories are based on an assumption of a rigid impermeable seabed, which are difficult to simulate the effects of porous seabed on wave propagation. The major intention is to establish modified wave dispersion equation which can consider the interaction of wave and seabed on the basis of dynamic analysis by employing the complex wave number. Analytical solutions of two non-dimensional parameters of wave length ratio and energy factor are given for comparative studies in different situations of seabed thickness, soil permeability, degree of saturation and wave circle frequency. The results show that wave profile will be attenuated and wave length will be changed subjected to the effects of porous seabed.