Computational Study on Effect of Obstacles in Pulse Detonation Engine

  • Authors

    • Saurabh Tripathi
    • Krishna Murari Pandey
    • Pitambar Randive
    2018-09-22
    https://doi.org/10.14419/ijet.v7i4.5.20025
  • Blockage ratio, Deflagration to Detonation, Flame acceleration, Obstacles, Pulse detonation engine.

  • Abstract

    Deflagration to Detonation transition is an important factor in the operation of pulse detonation engine which is basically working on the constant volume cycle. Insertion of obstacles decreases the DDT length. Hydrogen and the oxygen-enriched air was used as fuel and oxidizer respectively. The Purge gas is not required used. K-Ô‘ turbulence model is being used for the simulation and for combustion species transport model is being used. Effect of blockage ratio and obstacle spacing is also discussed. A blockage ratio of 0.5 is considered for the Shchelkin spiral. Temperature profile, flame propagation velocity and average peak pressure variation are discussed. Two-dimensional geometry and Shchelkin shape of obstacles are being considered. The comparison is done between straight tube and tube with obstacles. Numerical simulation is done and the results are being compared with those obtained through experimental investigation.

     

     

  • References

    1. [1] B.Zhang, H.Liu. The effects of a large-scale perturbation-generating obstacle on the propagation of detonation filled with methane-oxygen. Combust. Flame (2017) 279-287.

      [2] D.Valiev, V.Bychkov, V.Akkerman, C.K.Law, L.Eriksson. Flame acceleration in channels with obstacles in the deflagration-to-detonation transition. Combust.Flame 157 (2010) 1012-1021.

      [3] V.D.Sarli, A.D.Benedetto, G. Russo. Using large eddy simulation for understanding vented gas explosions in presence of obstacles. J. Hazardous Materials 169 (2009) 435-442.

      [4] B.Zhang, H.Liu, C.Wang. On the detonation propagation behaviour in hydrogen-oxygen mixture under the effect of spiral obstacles. Int. J. Hydrogen Energy 42 (2017) 21392-21402.

      [5] A.R.Masri, S.S. Ibrahim, N.Nehzat, A.R.Green. Experimental study of premixed flame propagation over various solid obstructions. Exp. Thermal Fluid Science 21 (2000) 109-116.

      [6] P. Chen, G.Luo, Y.Sun, Q.Lv. Impacts of plate slits on flame acceleration of premixed methane/air in a closed tube. J. of the Energy Ins. (2007) 1-10.

      [7] G. Ciccarelli, C. J. Fowler, M. Bardon. Effect of obstacle size and spacing on the initial stage of flame acceleration in a rough tube. Shock Waves (2005) 161-166.

      [8] R.Sorin, R. Zitoun, D. Desbordes. Optimization of the deflagration to detonation transition: reduction of length and time of transition. Shock Waves (2006) 137-145.

      [9] M.Cooper, S.Jackson, J.Austin, E.Wintenberger. Direct experimental impulse measurement for detonations and deflagrations. AIAA (2001) 2001-3812.

      [10] J.L.Li, W.Fan, C.J.Yan, H.Y.Tu, K.C.Xic. Performance enhancement of a pulse detonation rocket engine. Proc. Combust. Inst. 33 (2011) 2243-2254.

      [11] K.Asato, T.Miyasaka, Y.Watanabe, K.Tanabashi. Combined effects of vortex flow and Shchelkin spiral dimensions on characteristics of deflagration to detonation transition. Shock Waves 23 (2013) 325-335.

      [12] T.K.New, P.K.Panicker, F.K.Lu, H.Tsai. Experimental study on DDT enhancements by Shchelkin spirals in a PDE. AIAA (2006).

      [13] C.Johansen, G.Ciccarelli. Numerical simulations of flow field ahead of an accelerating flame in an obstacle. Comb. Theory and Modeling 14 (2010) 235-255.

      [14] W.Rudy, R.Porowski, A.Teodorczyk. Propagation of hydrogen-air detonation in tube with obstacles. J. Power Technologies 91 (2011) 122-129.

      [15] T.Craig, G.Ciccarelli. Visualization of the unburned gas flow field ahead of an accelerating flame in an obstructed square channel. Comb. and Flame 156 (2009) 405-416.

      [16] A.Teodorczyk. Scale effects on hydrogen–air fast deflagration and detonations in the obstructed channels. J. Loss Prevention Process Indus.21 (2008) 142-153.

      [17] K.Kailasanath, G.Patnaik. Performance estimates of pulsed detonation engines. Proc. Combust. Inst.28 (2000) 595-601.

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  • How to Cite

    Tripathi, S., Murari Pandey, K., & Randive, P. (2018). Computational Study on Effect of Obstacles in Pulse Detonation Engine. International Journal of Engineering & Technology, 7(4.5), 113-117. https://doi.org/10.14419/ijet.v7i4.5.20025

    Received date: 2018-09-22

    Accepted date: 2018-09-22

    Published date: 2018-09-22