基于CFD的船舶水动力计算收敛性分析  

Convergence Analysis of Ship Hydrodynamic Calculation Based on CFD

作　　者：张皓 郝承明[1,2] 曲自信 喻巧 焦甲龙 ZHANG Hao;HAO Chengming;QU Zixin;YU Qiao;JIAO Jialong(Nuclear Power Institute of China,Nuclear Power Institute of China,Chengdu 610213,Sichuan,China;Science and Technology on Reactor System Design Technology Laboratory,Nuclear Power Institute of China,Chengdu 610213,Sichuan,China;School of Civil Engineering and Transportation,South China University of Technology,Guangzhou 510641,Guangdong,China)

机构地区：[1]中国核动力研究设计院,四川成都610213 [2]中国核动力研究设计院核反应堆系统设计技术重点实验室,四川成都610213 [3]华南理工大学土木与交通学院,广东广州510641

出　　处：《造船技术》2023年第2期10-17,共8页

基　　金：广东省自然科学基金项目(编号:2022A1515010453)。

摘　　要：为基于计算流体动力学(Computational Fluid Dynamics, CFD)的单体船型水动力性能计算参数提供参考依据,开展相关的收敛性分析。采用CFD数值计算,分析网格尺度、湍流模型和时间步长对于船舶水动力计算的收敛性影响,提出基于CFD的船舶水动力计算优化参数模型,并以水池模型试验验证所提方案的准确性。采用船长2.83%的非结构化网格进行流体计算域网格划分,采用Realizable k-ε湍流模型,计算时间步长取波浪遭遇周期Te的1/200,可更加合理地模拟船舶在规则波中的运动响应,为基于CFD的船舶阻力与耐波性计算提供确定依据。In order to provide reference basis for the calculation parameters of hydrodynamic performance of mono-hull ship form based on Computational Fluid Dynamics(CFD),the relevant convergence analysis is made.The influence of grid scale,turbulence model,and time step on the convergence of ship hydrodynamic calculation is analyzed with the CFD numerical calculation,the optimization parameter model of ship hydrodynamic calculation based on CFD is proposed,and the accuracy of the proposed scheme is verified by the pool model test.It is able to more reasonably simulate the motion response of a ship in the regular waves to mesh the fluid computational domain with an unstructured grid with a ship length of 2.83%,to use the Realizable k-εturbulence model,and to take the calculation time step as 1/200 of the wave encounter period T e,which can provide the determination basis for the ship resistance and seakeeping calculation based on CFD.

关 键 词：单体船 收敛性分析 静水阻力 船舶耐波性 计算流体动力学 

分 类 号：U661.1[交通运输工程—船舶及航道工程]