摘要
针对水下航行器壳外换热形成的舷外鼓包对总阻力的影响,该文对水下航行器壳体和鼓包型线进行整体优化。首先,以水下航行器壳体型线和舷外鼓包型线设计参数为设计变量,以主尺度为约束条件,以水下直航总阻力为目标建立目标函数;然后,以初始主尺度进行参数化建模,同时,建立计算域参数化网格模型;最后,利用计算流体力学(CFD)方法分析水下航行器水下直航状态速度场、压力场分布,并根据流场信息对水下航行器壳体入流段、去流段和舷外鼓包区域型线进行优化。优化后的水下航行器摩擦阻力稍有增加,但黏压阻力和总阻力下降明显。通过该文型线优化降低壳外鼓包对总阻力的影响,该文研究结果可为基于壳外换热的水下航行器总体设计提供参考。
Aiming at the influence of outboard bulge caused by heat transfer outside on total resistance of the underwater vehicle on the total resistance,the shell and drum profile of the underwater vehicle are optimized in this paper.First of all,the design parameters of the hull profile and outboard drum profile of the underwater vehicle are taken as the design variables,the principal scale is taken as the constraint condition,and the objective function is established with the total resistance of underwater direct navigation as the objective function.Then,the parametric modeling is carried out with the initial principal scale,and at the same time,the parameterized grid model of calculation domain is established.Finally,the computational fluid dynamics(CFD)method is used to analyze the velocity field and pressure field distribution of the underwater vehicle in the underwater direct navigation state,and according to the flow field information,the inlet section,outlet section and outboard drum zone profile of the underwater vehicle shell are optimized.The friction resistance of the optimized underwater vehicle increases slightly,but the viscous pressure resistance and total resistance decrease obviously.Through the optimization of the profile in this paper,the influence of the drum outside the shell on the total resistance is reduced,and the results of this paper can provide a reference for the overall design of the underwater vehicle based on the heat transfer outside the shell.
出处
《科技创新与应用》
2024年第29期8-14,共7页
Technology Innovation and Application
关键词
壳外换热
水下航行器
CFD
阻力
型线优化
external heat transfer
underwater vehicle
CFD
resistance
profile optimization
