水运工程
水運工程
수운공정
PORT & WATERWAY ENGINEERING
2010年
12期
5-7
,共3页
波浪辐射应力%低频波浪%波幅
波浪輻射應力%低頻波浪%波幅
파랑복사응력%저빈파랑%파폭
radiation stress%low-frequency wave%wave amplitude
利用基于Boussinesq方程的波浪辐射应力计算模型,模拟常水深地形中传播的低频波浪,研究其形态变化,以及低频波浪与波浪辐射应力之间的关系。结果发现约束长波的波幅和波群的辐射应力值基本保持在某一均值不变;主频的波幅、约束长波的波幅都会做一定周期的震荡,同时波群的辐射应力也随之而震荡,三者之间的变化关系是波群非线性能量传递的表现。
利用基于Boussinesq方程的波浪輻射應力計算模型,模擬常水深地形中傳播的低頻波浪,研究其形態變化,以及低頻波浪與波浪輻射應力之間的關繫。結果髮現約束長波的波幅和波群的輻射應力值基本保持在某一均值不變;主頻的波幅、約束長波的波幅都會做一定週期的震盪,同時波群的輻射應力也隨之而震盪,三者之間的變化關繫是波群非線性能量傳遞的錶現。
이용기우Boussinesq방정적파랑복사응력계산모형,모의상수심지형중전파적저빈파랑,연구기형태변화,이급저빈파랑여파랑복사응력지간적관계。결과발현약속장파적파폭화파군적복사응력치기본보지재모일균치불변;주빈적파폭、약속장파적파폭도회주일정주기적진탕,동시파군적복사응력야수지이진탕,삼자지간적변화관계시파군비선성능량전체적표현。
A method of calculating the wave radiation stress based on the Boussinesq equations is used to simulate the low-frequency waves in a horizontal bottom.The results show that the amplitude of the bound wave and the wave radiation stress maintain basically a certain value;the amplitude of the incident wave and that of the bound wave keep oscillation within a certain period,and the wave radiation stress does the oscillation simultaneously.The relationships among them are caused by the nonlinear energy transformation among the different wave factors.
