FSRU船舶运动与液舱晃荡的耦合分析

Analysis of coupling effects of sloshing and ship motion for FSRU

文中基于线性势流理论,对规则波中带液舱的FSRU船舶进行运动响应分析,考虑液舱晃荡与船体运动的耦合,得到6个自由度下的水动力系数和运动响应理论值.同时应用由BV开发的高效率水动力分析软件Hydro STAR,研究考虑液舱晃荡时FSRU运动响应,求得各自由度运动响应算子RAO.最后,比较了考虑液舱晃荡与不考虑液舱晃荡时,FSRU运动响应的变化;在此基础之上讨论了液舱载液率和液舱布置对FSRU运动的影响.

Based on the linear potential flow theory,the motion response of FSRU sailing in regular wave is studied with the consideration of coupling of tank sloshing. Theoretical hydrodynamic coefficients and RAOs of six degrees of freedom are acquired. With the application of high efficiency hydrodynamic analysis software HydroSTAR,which is developed by BV,hydrodynamic response of FSRU with the consideration of tank sloshing is calculated. Finally,the effects of tank sloshing on ship motion is obtained by comparing the FSRU motions with and without the consideration of tank sloshing. Based on this,the effects of tank liquid ratio and tank layout on FSRU motion response are further discussed.