高速断阶船滑行绕流场CFD不确定度分析  

CFD Uncertainty Analysis for the Flow Field of a High-Speed Stepped Hull

作　　者：刘聪 毛佳寅 王体涛 史圣哲 李新颖 王明振 LIU Cong;MAO Jiayin;WANG Titao;SHI Shengzhe;LI Xinying;WANG Mingzhen(China Special Vehicle Research Institute,Jingmen 448035,Hubei,China;Marine Design and Research Institute of China,Shanghai 200011,China;Shanghai Marine Equipment Research Institute,Shanghai 200031,China;Key Aviation Scientific and Technological Laboratory of High-Speed Hydrodynamic,Jingmen 448035,Hubei,China)

机构地区：[1]中国特种飞行器研究所,湖北荆门448035 [2]中国船舶及海洋工程设计研究院,上海200011 [3]上海船舶设备研究所,上海200031 [4]高速水动力航空科技重点实验室,湖北荆门448035

出　　处：《船舶工程》2025年第2期38-43,88,共7页Ship Engineering

摘　　要：[目的]为评估计算流体力学(CFD)方法在预报水面飞行器高速水动力性能方面的可信度,指导飞行器水动布局设计,基于RANSE求解的方法对飞行器断阶构型单船身高速滑行绕流场开展数值研究。[方法]基于ITTC推荐规程和试验结果,对半滑行和高速滑行状态下船体阻力数值预报进行网格不确定度分析,采用通过验证与确认的数值模型对不同航速下断阶船滑行绕流场进行仿真,并对部分流场特性进行分析。[结果]结果表明,通过选择合适的y+值和网格尺寸捕捉流场特征,可提高预报精度;经过验证与确认的数值模型阻力、姿态预报结果与试验值吻合良好;在断阶船进入滑行状态后,断阶处形成的空腔起到增升减阻作用。[结论]研究结果可为水面飞行器高速滑行水动力预报和性能设计提供参考。[Purpose]To evaluate the credibility of the computational fluid dynamics(CFD)method in predicting the high-speed hydrodynamic performance of seaplane and to guide the design of the hydrodynamic layout,a numerical studies is conducted on the high-speed planning flow field around a single hull with a stepped configuration of the vehicle,based on the RANSE solution method.[Method]Based on the ITTC recommended procedures and experimental results,a grid uncertainty analysis is conducted on the numerical prediction of hull resistance under semi-planning and high-speed planning conditions.The validated and verified numerical model is employed to simulate the flow field around a stepped hull during planning at various speeds,and partial flow field characteristics are analyzed.[Result]The results indicate that by selecting appropriate y~+values and grid sizes to capture flow field characteristics,the prediction accuracy can be improved.The validated and verified numerical model demonstrates good agreement between the predicted resistance and attitude results and the experimental values.After the stepped hull enters the planning state,the cavity formed at the step acts to increase lift and reduce resistance.[Conclusion]The research results can provide references for hydrodynamic prediction and performance design of high-speed taxiing surface vehicles.

关 键 词：水面飞行器 断阶船 计算流体力学(CFD) 不确定度 

分 类 号：U661.43[交通运输工程—船舶及航道工程]