Multi-disciplinary Analysis of Flow in Weapon Bays

  • Gaëtan J. M. Loupy
  • George N. BarakosEmail author
Conference paper
Part of the Notes on Numerical Fluid Mechanics and Multidisciplinary Design book series (NNFM, volume 137)


Scale-Adaptive Simulations of store release from weapon bays using overset grids are presented in this paper. A six-degree-of-freedom model is coupled with the HMB3 flow solver, and store release simulations are performed for a finned store inside an idealised bay. A wavelets analysis revealed that the tonal noise radiated from the cavity is generated by standing waves. It is also found that the trajectories of stores released from the cavities are affected by the mean flow field, the standing waves, and the dynamics of the shear layer formed along the cavity opening.



The financial support of MBDA Missile Systems is gratefully acknowledged. The use of the EPSRC funded ARCHIE-WeSt High Performance Computer (EPSRC grant no. EP/K000586/1) is also gratefully acknowledged.


  1. 1.
    Babu, S., Zografakis, G., Barakos, G.: Evaluation of Scale-Adaptive Simulations for Transonic Cavity Flows, vol. 130, pp. 433–444. Springer International Publishing (2015).
  2. 2.
    Bussow, R.: An algorithm for the continuous Morlet wavelet transform. Mech. Syst. Signal Process. 21(8), 2970–2979 (2007).
  3. 3.
    Crowe, D., Martel, J., Lee, J., Rizk, M.: Numerical simulation of a GBU-12 emergency jettison from the F-35B (STOVL variant). In: Proceedings of the 28th AIAA Applied Aerodynamics Conference, American Institute of Aeronautics and Astronautics Inc, AIAA 2010-4242 (2010).
  4. 4.
    Davis, M., Yagle, P., Smith, B., Chankaya, K., Johnson, R.: Store trajectory response to unsteady weapons bay flowfields. In: Proceedings of the 47th AIAA Aerospace Sciences Meeting, Orlando, FL, United States, AIAA 2009-547 (2009).
  5. 5.
    Finney, L.: Investigation of cavity flow effects on store separation trajectories. Trident scholar project report no. 388. Ph.D. thesis, U.S. Naval Academy (2010)Google Scholar
  6. 6.
    Hirt, C.W., Amsten, A.A., Cook, J.L.: An arbitrary Lagrangian-Eulerian computing method for all flow speeds. J. Comput. Phys. 14(3), 227–253 (1974).
  7. 7.
    Johnson, R., Davis, M., Finley, D.: Relaxed fidelity CFD methods applied to store separation problems. In: RTO AVT Symposium on Functional and Mechanical Integration of Weapons and Land and Air Vehicles. RTO-MP-AVT-108, Williamsburg, VA, USA (2004)Google Scholar
  8. 8.
    Kegerise, M., Spina, E., Garg, S., Cattafesta, L.: Mode-switching and nonlinear effects in compressible flow over a cavity. Phys. Fluids 16(3), 678–687 (2004).
  9. 9.
    Kim, D., Choi, J., Kwon, O.: Detached eddy simulation of weapons bay flows and store separation. Comput. Fluids 121, 1–10 (2015).
  10. 10.
    Lee, J., Piranian, A., Martel, J., Crowe, D., Rizk, M.: Store separations in jet flow environments. In: 48th AIAA Aerospace Sciences Meeting, Orlando, Florida, USA, AIAA 2010-510 (2010).
  11. 11.
    Menter, F., Egorov, Y.: The scale-adaptive simulation method for unsteady turbulent flow predictions. Part 1: Theory and model description. Flow Turbul. Combust. 85(1), 113–138 (2010).
  12. 12.
    Nightingale, D., Ross, J., Foster, G.: Cavity unsteady pressure measurements—examples from wind-tunnel tests. Technical Report Version 3, Aerodynamics & Aeromechanics Systems Group, QinetiQ, Bedford, UK (2005)Google Scholar
  13. 13.
    Pierce, A.: Acoustics: An Introduction to Its Physical Principles and Applications. Acoustical Society of America, Woodbury, New York (1989)Google Scholar
  14. 14.
    Rossiter, J.E.: Wind tunnel experiments on the flow over rectangular cavities at subsonic and transonic speeds. Technical Report 64037, Royal Aircraft Establishment, Bedford, UK (1964)Google Scholar
  15. 15.
    Schmit, R., Grove, J., Semmelmayer, F., Haverkamp, M.: Nonlinear feedback mechanisms inside a rectangular cavity. AIAA J. 52(10), 2127–2142 (2014).

Copyright information

© Springer International Publishing AG 2018

Authors and Affiliations

  1. 1.School of EngineeringUniversity of GlasgowGlasgowUK

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