Calculation of Trajectory of High-speed Spinning Projectile Based on Computational Fluid Dynamics/Rigid Body Dynamics Coupling

被引:0
作者
Zhong Y. [1 ]
Wang L. [1 ]
Wu Y. [1 ,2 ]
机构
[1] School of Energy and Power Engineering, Nanjing University of Science and Technology, Nanjing, 210094, Jiangsu
[2] Unit 63961 of PLA, Beijing
来源
Binggong Xuebao/Acta Armamentarii | 2020年 / 41卷 / 06期
关键词
Computational fluid dynamics; Coupling calculation; High-speed spinning projectile; Rigid-body dynamics; Trajectory;
D O I
10.3969/j.issn.1000-1093.2020.06.005
中图分类号
学科分类号
摘要
To study the real flight trajectory of high-speed spinning projectile, a computational fluid dynamics/rigid body dynamics (CFD/RBD) couping computational methodology is developed using improved simple low-dissipation advection upstream splitting method (SLAU2), dual time-stepping method and Spalart-Allmaras (S-A) turbulence model based on the ideas of adding the motion of projectile axis to the surfaces of control volumes and adding the spin motion to the wall boundary. A flow model with ALE form is established. An arbitrary Lagrangian-Eulerian (ALE) flow model is established. A coupled mathematical model of the projectile motion and the surfaces of control volume motion is developed, and the simultaneous calculation of flow equations and trajectory equations based on 4th order Runge-Kutta method is achieved. The research results show that the aerodynamic coupling method and time step have great influence on the trajectory coupling calculation results. The trajectory of M549 spinning projectile at 0.5 ms timesteps was simulated using the tighting coupling method. The simulated results are basically consistent with the results calculated by the aerodynamic model. The trajectory simulation result of a spin stabilized two-dimensional trajectory correction projectile shows that the characteristic of that rising moment causes the projectile nose drop, which is consistent with the result in Ref. [29]. © 2020, Editorial Board of Acta Armamentarii. All right reserved.
引用
收藏
页码:1085 / 1095
页数:10
相关论文
共 29 条
  • [1] HAN Z P., Exterior ballistics of projectiles, pp. 120-143, (2008)
  • [2] SAHU J., Time-accurate numerical prediction of free-flight aerodynamics of a finned projectile, Journal of Spacecraft and Rockets, 45, 5, pp. 946-954, (2008)
  • [3] SAHU J., Computations of unsteady aerodynamics of a spinning body at transonic speeds, Proceedings of the 27th AIAA Applied Aerodynamics Conference, (2009)
  • [4] SAHU J., Virtual fly-out simulations of a spinning projectile from subsonic to supersonic speeds, Proceedings of the 29th AIAA Applied Aerodynamics Conference, (2011)
  • [5] SAHU J., Unsteady free-flight aerodynamics of a spinning projectile at a high transonic speed, Proceedings of the AIAA Atmospheric Flight Mechanics Conference and Exhibit, (2008)
  • [6] SAHU J, FRESCONI F, HEAVEY K R., Unsteady aerodynamic simulations of a finned projectile at a supersonic speed with jet interaction, Proceedings of the 32nd AIAA Applied Aerodynamics Conference, (2014)
  • [7] SAHU J., Time-accurate numerical prediction of free flight aerodynamics of projectiles, Journal of Spacecraft and Rockets, 45, 5, pp. 946-954, (2006)
  • [8] JENNA S, COSTELLO M, SAHU J., Projectile aerodynamic coefficient estimation using integrated CFD/RBD and flight control system modeling, Proceedings of the AIAA Atmospheric Flight Mechanics Conference, (2009)
  • [9] STAHL J, COSTELLO M., Estimation of projectile aerodynamic coefficients using coupled CFD/RBD simulation results, Proceedings of the AIAA Atmospheric Flight Mechanics Conferenc, (2010)
  • [10] SAHU J, GATTO S, COSTELLO M., Using computational fluid dynamics-rigid body dynamic (CFD-RBD) results to generate aerodynamic models for projectile flight simulation: ARL-TR-4270, (2007)