华中科技大学学报（自然科学版）2024，Vol.52Issue(1)：53-58,65,7.DOI:10.13245/j.hust.240448
椭球体水动力及流场的数值模拟和试验研究
Numerical simulation and experimental study on hydrodynamics and flow field of ellipsoid
摘要
Abstract
The hydrodynamic,surface pressure and flow field characteristics of the ellipsoid in direct and oblique navigation were studied by numerical simulation and experimental test.The effects of velocity and drift angle on the force and torque of the ellipsoid and the variation of surface pressure under these factors were discussed.Finally,the velocity field of the ellipsoid at different drift angles was obtained by PIV(particle image velocimetry)test system.Compared with the numerical method,the flow separation phenomenon of the ellipsoid at different drift angles was demonstrated.The results showed that under direct navigation,the ellipsoid resistance increases with the increase of velocity,the axial pressure is high at the bow and stem,and low at the middle,and the flow separation is not obvious.Under oblique navigation conditions,with the increase of drift angle,the resistance decreases,the lateral force and yaw moment increase,the pressure on the upstream and downstream surfaces increases,the vorticity increases and the flow separation point moves forward.The results provide a reference for the maneuverability prediction of submarines and other underwater vehicles.关键词
椭球体/机动状态/水动力/表面压力/流场特性Key words
ellipsoid/maneuvering state/hydrodynamic force/surface pressure/flow field characteristics分类
交通工程引用本文复制引用
郭春雨,高铭辰,韩阳,王世民..椭球体水动力及流场的数值模拟和试验研究[J].华中科技大学学报（自然科学版）,2024,52(1):53-58,65,7.基金项目
国家自然科学基金资助项目(52001090) （52001090）
基础产品创新科研项目(CZ380). （CZ380）
