Numerical Study of Pulse Detonation Engine with One-step Overall Reaction Model

  • P. Srihari Defence Research & Development Laboratory, Hyderabad
  • M.A. Mallesh Defence Research & Development Laboratory, Hyderabad
  • G. Sai Krishna Prasad Defence Research & Development Laboratory, Hyderabad
  • B.V.N. Charyulu Defence Research & Development Laboratory, Hyderabad
  • D.N. Reddy Recruitment and Assessment Centre, Delhi
Keywords: Pulse detonation engine, numerical simulation, CFD

Abstract

This paper presents an insight for the study of transient, compressible, intermittent pulsed detonation engine with one-step overall reaction model to reduce the computational complexity in detonation simulations. Investigations are done on flow field conditions developing inside the tube with the usage of irreversible one-step chemical reactions for detonations. In the present simulations 1-D and 2-D axisymmetric tubes are considered for the investigation. The flow conditions inside the detonation tube are estimated as a function of time and distance. Studies are also performed with different grid sizes which influence the prediction of Von-Neumann spike, CJ Pressure and detonation velocity. The simulation result from the single-cycle reaction model agrees well with the previous published literature of multi-step reaction models. The present studies shows that one-step overall reaction model is sufficient to predict the flow properties with reasonable accuracy. Finally, the results from the present study were compared and validated using NASA CEA.

Defence Science Journal, Vol. 65, No. 4, July 2015, pp. 265-271, DOI: http://dx.doi.org/10.14429/dsj.65.8730

Published
2015-07-20
How to Cite
Srihari, P., Mallesh, M., Prasad, G. S. K., Charyulu, B., & Reddy, D. (2015). Numerical Study of Pulse Detonation Engine with One-step Overall Reaction Model. Defence Science Journal, 65(4), 265-271. https://doi.org/10.14429/dsj.65.8730
Section
Applied Physics & Fluid Dynamics