摘要
基于黏性流理论,采用动网格技术和6自由度模型,以及动量源方法,建立了双浮板液舱晃荡的数值模型。分别采用3种不同空间步长的网格离散计算区域,进行了网格收敛性验证。通过光滑液舱晃荡的模型试验和解析得到的爬高最大值,验证了数值模型的精确性。在载液率为50%,激励幅值为2 mm条件下,对双浮板液舱晃荡进行了数值计算,与光滑液舱相比,双浮板液舱晃荡的最大爬高明显减小。通过一个激励周期内双浮板液舱晃荡的波面显示发现,液舱晃荡模式由光滑液舱的驻波模式变为U管模式,晃荡模式的改变起到了明显地抑制液舱晃荡的效果。
Based on the viscous flow theory,a numerical model for sloshing of dual floating plates was established by using the dynamic mesh technique,the six degree of freedom solver and the momentum source method.The grid convergence was conducted for three different spatial steps.The accuracy of the numerical model was verified by the model test and analytical results in the clean tank.Compared with the clean tank,the maximum wave run-up is significantly mitigated under the excitation amplitude of 2 mm for the 50%filling rate,especially when the excitation frequency is in the vicinity of the first-order natural frequency.The results show that the sloshing mode changes from the standing wave mode of the clean tank to the U-tube mode,which has a remarkable effect on sloshing suppressing.
作者
于曰旻
YU Yuemin(College of Civil Engineering and Architecture, Hainan University, Haikou 570228, China;State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou 570228, China)
出处
《海洋工程》
CSCD
北大核心
2021年第5期144-150,共7页
The Ocean Engineering
基金
海南省自然科学基金项目(519MS026)
海南大学科研启动基金项目(KYQD(ZR)1878)。
关键词
液舱晃荡
数值模拟
双浮板
爬高
晃荡模式
sloshing
numerical simulation
dual floating plates
wave run-up
sloshing mode
