船舶横摇阻尼的CFD数值模拟研究（英文）  

Validation of CFD Simulation for Ship Roll Damping

作　　者：卜淑霞[1] 邱耿耀[1] 顾民[1] 吴乘胜[1] 曾柯[1] BU Shu-xia QIU Geng-yao GU Min WU Cheng-sheng ZENG Ke(China Ship Scientific Research Center, Wuxi 214082, China)

机构地区：[1]中国船舶科学研究中心,江苏无锡214082

出　　处：《船舶力学》2017年第3期275-283,共9页Journal of Ship Mechanics

基　　金：Supported by Ministry of Industry and Information Technology of China(No.[2016]26)

摘　　要：船舶横摇阻尼是影响参数横摇和瘫船稳性等大幅横摇运动的关键参数。文中基于非定常RANS方程在静水中对模型2792进行了自由横摇衰减的数值模拟,该模型是船舶第二代完整稳性衡准制定中瘫船稳性研究的国际标准船模,数值模拟中采用了两种网格类型,一种是滑移网格,另一种重叠网格。计算结果表明,数值模拟的自由横摇衰减曲线和模型试验结果吻合良好,另外CFD计算的横摇阻尼与试验值的误差小于Ikeda’s经验公式计算的误差,证明非定常RANS方程可用于预报横摇阻尼。Ship roll damping is a key factor for predicting large amplitude roll motions, such as parametric roll and stability under dead ship condition. In this paper, the free roll motions of an international standard model ship 2792 for dead ship are simulated based on the unsteady RANS equation in calm water by two types of meshes, the sliding mesh and the overset mesh. The free roll decay curves of numerical simulations are compared with experimental results, and the roll damping coefficients are also compared with that in Ikeda＇s simplified formula. The calculated free decay curves agree quite well with the free decay curves from the experiments, and the errors of roll damping coefficient calculated by CFD are smaller than that from Ikeda＇s simplified formula, which validate that the unsteady RANS equation can be used to predict roll damping.

关 键 词：横摇阻尼 RANS 自由横摇衰减 重叠网格 滑移网格 

分 类 号：U661.321[交通运输工程—船舶及航道工程]