A study of hybrid prediction method for ship parametric rolling  

作　　者：周耀华 马宁 鲁江 顾民 

机构地区：[1]School of Naval Architect, Ocean and Civil Engineering, Shanghai Jiao Tong University, Shanghai 200240,China [2]Shanghai Rules and Research Institute, China Classification Society, Shanghai 200135, China [3]State key Laboratory of Ocean Engineering, Shanghai Jiao Tong University, Shanghai 200240, China [4]China Ship Scientific Research Center, Wuxi 214082, China

出　　处：《Journal of Hydrodynamics》2016年第4期617-628,共12页水动力学研究与进展B辑（英文版）

基　　金：supported by the Ministry of Industry and Infor-mation Technology of China(Grant No.[2012]533);the Chinese Government Key Research Knowledge-based Ship Design Hyper-Integrated Platform(Grant No.201335)

摘　　要：The parametric rolling（PR） in the head or following waves has been considered as one of the main stability failure modes in the development of the 2nd generation Intact Stability criterion by the International Maritime Organization（IMO）.According to previous studies,the estimation methods of the roll damping affect the prediction of the PR significantly,and most of them are based on experiment data or Ikeda＇s empirical formula.The accuracy of the estimation method for the roll damping could be a key aspect for the validity of its prediction for the full scale ship.In this research,a hybrid prediction method is developed for the numerical prediction of the parametric rolling when experiment data are not available for the roll damping.Comparison study is also carried out between the hybrid method and a nonlinear dynamics method,where the roll damping is estimated by the simplified Ikeda＇s method and the direct CFD prediction method in a direct non-linear simulation based on the 3-D CFD approach in the model scale.It is shown that the results of the hybrid method are in satisfactory agreements with the model experiment results,and the method can be used for analysis especially at the early design stage where experiment data are often not available.The parametric rolling（PR） in the head or following waves has been considered as one of the main stability failure modes in the development of the 2nd generation Intact Stability criterion by the International Maritime Organization（IMO）.According to previous studies,the estimation methods of the roll damping affect the prediction of the PR significantly,and most of them are based on experiment data or Ikeda＇s empirical formula.The accuracy of the estimation method for the roll damping could be a key aspect for the validity of its prediction for the full scale ship.In this research,a hybrid prediction method is developed for the numerical prediction of the parametric rolling when experiment data are not available for the roll damping.Comparison study is also carried out between the hybrid method and a nonlinear dynamics method,where the roll damping is estimated by the simplified Ikeda＇s method and the direct CFD prediction method in a direct non-linear simulation based on the 3-D CFD approach in the model scale.It is shown that the results of the hybrid method are in satisfactory agreements with the model experiment results,and the method can be used for analysis especially at the early design stage where experiment data are often not available.

关 键 词：parametric rolling satisfactory simplified validity damping empirical Maritime utilized coordinates 

分 类 号：U661.321[交通运输工程—船舶及航道工程]