摘要
一种预估-校正有限差分方法被建立用来研究耦合的纵荡和纵摇激励对受到共振激励的水槽中粘性流体晃动的影响.通过已存在的解析解和数值解对数值模型进行了验证.可以看到流体的粘性会使自由面波产生非常明显的衰减.对于给定的雷诺数来说,如果水槽只是受到纵摇激励时,最大的晃动位移会随着激励振幅的增加而增加.但当水槽受到同时的纵荡和纵摇激励时,相应的自由面的振幅会变小且耦合的作用会改变自由面高度的时间历程曲线的形状.
A predietor-corrector finite difference method has been developed to investigate the coupled effects of surge and pitch motions on sloshing viscous fluid in a tank under resonant excitation.The numerical model is validated by the available analytical solution and numerical data.It is seen that the viscous effect signif- icantly reduces the transient amplitude. When the tank undergoes purely pitch motion, the maximum sloshing displacement increases with the increase of pitching excitation amplitude for a given Reynolds number.Howev- er, when the tank is simultaneously excited by surge and pitch motions, the corresponding free surface ampli- tude becomes small and the coupled effect alters the shape of the time history of free surface elevation.
出处
《曲阜师范大学学报（自然科学版）》
CAS
2016年第3期65-75,共11页
Journal of Qufu Normal University(Natural Science)
基金
Supported by the National Natural Science Foundation of China(11561037)
the Research Foundation of Education Department of Yunnan Province of China(2015z035)
