基于重叠网格的潜艇自航模操纵运动数值模拟研究  

Numerical research on free running model maneuvering motion of a generic submarine based on overset mesh

作　　者：陈默 张楠[1] 陈纪军[1] 黄苗苗[1] 曾柯[1] CHEN Mo;ZHANG Nan;CHEN Ji-jun;HUANG Miao-miao;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》2024年第4期485-500,共16页Journal of Ship Mechanics

基　　金：装备预研共用技术项目(50907010101)。

摘　　要：针对潜艇机动状态非定常运动数值模拟方法提升的实际需求,本文采用基于重叠网格的方法对潜艇六自由度耦合运动及各操纵面的独立运动直接数值建模,并利用滑移网格技术直接模拟艇后螺旋桨的转动,进行潜艇水下自航模的数值模拟方法研究。通过开展潜艇自航模水下直航、水下回转、水平面Z形操舵、紧急倒车等典型工况的数值模拟,重点解决潜艇操纵状态下艇/桨/舵水动力耦合建模、自动舵的PD(proportional-derivative)数值控制实现等问题,建立基于重叠网格的潜艇自航模数值模拟技术途径。同时对潜艇操纵状态下艇体周围流动现象以及运动学与动力学参数时历变化过程进行分析,通过将典型运动参数数值模拟结果与水池物理模型试验结果进行对比,验证其工程预报实用性。研究结果可为潜艇操纵性和适航性预报与评估以及潜艇自航模模型试验技术完善提供技术支撑。Aiming at the actual demand of improving the numerical simulation of unsteady submarine motion in maneuvering condition,the overset mesh was used to directly model six degree of freedom coupling motion of a submarine and the independent motion of each control surface,and the sliding mesh was used to directly simulate the propeller rotation at the stern of a submarine,so as to carry out the research on the numerical simulation of a generic submarine in self-propulsion and free running maneuvering conditions.Through the procedure of numerical simulation in typical working conditions,such as submerged self-propulsion,turning maneuver,zigzag maneuver,crashback,etc.,the issues of submarine/propeller/rudder hydrodynamic cou⁃pling modeling and PD(proportional-derivative)numerical control realization of autopilot in maneuvering condition were emphatically solved,and the technology of free running submarine model numerical simula⁃tion based on overset mesh was established.At the same time,the surrounding flow phenomenon and the time-history change process of kinematics and dynamics parameters of the submarine in maneuvering condi⁃tion were analyzed.By comparing the numerical simulation results of typical dynamics parameters with the model test results,the practicability of the approach for engineering prediction was verified.The research can provide a guidance for the prediction and evaluation of submarine maneuverability and seaworthiness.It is beneficial for the improvement of free running submarine model tests.

关 键 词：潜艇 自航模 重叠网格 数值模拟 

分 类 号：U661.43[交通运输工程—船舶及航道工程]