摘要
目前,国内外对于两栖航行器气动/水动特性的研究仍处于探索与发展阶段。结合鱼雷及水翼船的特点,提出一种通过改变外形实现水下、水面航行的新型两栖水翼航行器。基于LBM-LES方法对航行器水动特性进行数值仿真,得到航行器在水下、水面航行时的升力、阻力曲线。结果表明:在水下航行时,收缩水翼的航行器在较小的迎角范围内阻力较小,适合高速航行;在水面航行时,展开的水翼增大了航行器的升力、减小了阻力;通过改变外形航行器能够满足在水下、水面的航行要求,其外形设计及两栖航行性能还有较大的优化空间。
At present, research on the aerodynamics and hydrodynamic characteristics of a amphibious hydrofoil vehicle at home and abroad is still at exploration and development stage. A new amphibious hydrofoil vehicle with variable shape is proposed based on the characteristics of the torpedo and hydrofoil. The hydrodynamic characteristics of the amphibious hydrofoil vehicle is numerical simulated based on the LBM(Lattice Boltzmann Method)-LES(Large Eddy Simulation). Lift curves and drag curves of the amphibious hydrofoil vehicle under water and surface of the water are gained. The comparison results show that the vehicle retracts its hydrofoil to make the drag smaller in a small angle of attack under water, which is suitable for high speed navigation. The vehicle unfolds the hydrofoil to increase lift and reduce drag on the surface of the water. Meanwhile, the amphibious hydrofoil vehicle can meet its requirements of navigation under water and on the surface of the water by changing its shape. Shape design and amphibious navigation performance of vehicle still have much room for optimization.
作者
冯欢欢
刘勇
王琦
邹森
Feng Huanhuan;Liu Yong;Wang Qi;Zou Sen(School of Aircraft Engineering,Nangchang Hangkong University,Nanchang 330063,China)
出处
《航空工程进展》
CSCD
2019年第1期102-108,共7页
Advances in Aeronautical Science and Engineering
基金
江西省科技厅重点研发计划(20151BBE50026)
江西省研究生创新基金(YC2017-S332)
关键词
LBM-LES
水翼
数值仿真
水动特性
LBM-LES
hydrofoil
numerical simulation
hydrodynamic characteristics
