基于LBM-LES方法两栖水翼航行器水动特性分析
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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.
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.
引文
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[3]张佳强.潜-飞两栖导弹动力学特性研究[D].西安:空军工程大学,2012.Zhang Jiaqiang.Study on dynamic characteristics of submarine fly amphibious missile[D].Xi’an:Air Force Engineering University,2012.(in Chinese)
[4]August H,Osborn R,Pinney M.Ring wing missile for compressed carriage on an aircraft[C]∥Flight Simulation and Technologies,2013.
[5]齐铎,冯金富,李永利.具有水空介质跨越能力的反舰武器[J].飞航导弹,2014(11):78-80.Qi Duo,Feng Jinfu,Li Yongli.Anti ship weapons with the ability to leap over water and air medium[J].Winged Missile,2014(11):78-80.(in Chinese)
[6]裴譞,张宇文,袁绪龙,等.两栖UAV动力学建模与仿真[J].火力与指挥控制,2011,36(1):10-13.Pei Xuan,Zhang Yuwen,Yuan Xulong,et al.Dynamic modeling and simulation of trans-media aircraft system[J].Fire Control&Command Control,2011,36(1):10-13.(in Chinese)
[7]Sousa de J V N,Macedo de A R L,Amorim Junior de WF,et al.Numerical analysis of turbulent fluid flow and drag coefficient for optimizing the AUV hull design[J].Open Journal of Fluid Dynamic,2014(4):263-277.
[8]Sun C,Song B,Wang P.Parametric geometric model and shape optimization of an underwater glider with blendedwing-body[J].International Journal of Naval Architecture&Ocean Engineering,2015,7(6):995-1006.
[9]Lidtke A K,Turnock S R,Downes J.Assessment of underwater glider performance through viscous computational fluid dynamics[C]∥Autonomous Underwater Vehicles,IEEE,2016.
[10]Ginzburg I,Krafczyk M,D’Humières D,et al.Multiplerelaxation-time lattice Boltzmann models in threedimensions[J].Philos Trans A Math Phys Eng Sci,2002,360(1792):437-451.
[11]Suga K,Kuwata Y,Takashima K,et al.A D3Q27multiple-relaxation-time lattice boltzmann method for turbulent flows[J].Computers&Mathematics with Applications,2015,69(6):518-529.
[12]Premnath K N,Pattison M J,Banerjee S.Dynamic subgrid scale modeling of turbulent flows using lattice-Boltzmann method[J].Physica A Statistical Mechanics&Its Applications,2012,388(13):2640-2658.
[13]Germano M,Piomelli U,Moin P,et al.A dynamic subgrid-scale eddy viscosity model[J].Physics of Fluids,1998,3(3):1760-1765.
[14]严卫生.鱼雷航行力学[M].西安:西北工业大学出版社,2005.Yan Weisheng.Torpedo navigation mechanics[M].Xi’an:Northwestern Polytechnical University Press,2005.(in Chinese)
[15]廖保全,冯金富,齐铎,等.基于FLUENT的新型跨介质航行器气动水动特性研究[J].数值计算与计算机应用,2016,37(4):265-272.Liao Baoquan,Feng Jinfu,Qi Duo,et al.Study of aerodynamic and hydrodynamic characteristics and for a new transmedia vehicle based on FLUENT[J].Journal on Numerical Method and Computer Applications,2016,37(4):265-272.(in Chinese)