Ваш браузер устарел.

Для того, чтобы использовать все возможности сайта, загрузите и установите один из этих браузеров.



  • Title

    Transition of deflagration to detonation and estimation of the detonation induction distance

  • Authors

    Volkov Viktor E.

  • Subject


  • Year 2014
    Issue 1(43)
    UDC 534.222.2+536.46+662.215.1
    DOI 10.15276/opu.1.43.2014.21
    Pages 120-126
  • Abstract

    Deflagration-to-detonation transition is interesting both for explosion safety and for the pulse detonation engine designing. Such engines are energetically favorable at flight Mach numbers exceeding 3. But transition from subsonic combustion to detonation is not investigated enough at present, and that is a serious difficulty both to the explosion safety problem solution and to engineering of detonation engines (both aeroengines and rocket engines). The aim of the study is investigation of mathematical laws for the mentioned transition. A mathematical model for deflagration-to-detonation transition that is based on the solution of the flame stability problem is offered. This model amplifies modern theory of combustion and explosion and turbulence theory. Theoretical estimates for the detonation induction distance and for the detonation wave formation time are made. It is proved that the detonation induction distance for a slow-burning mixture is greater than for a fast-burning one. The obtained results make it possible to improve mathematical support of the automated control systems for the dangerously explosive objects and the detonation engine designing.

  • Keywords
  • Viewed: 1116 Dowloaded: 6
  • Download Article
  • References

    1.Application of Detonation to Propulsion / Edited by G. Roy, S. Frolov, J. Shepherd. - Moscow: TO-RUS PRESS Ltd., 2004. - 328 p.

    2.Nettleton, M.A. Gaseous detonations: their nature and control / M.A. Nettleton. - [S.l.]: Springer, 2013. - 255 p.

    3.Liberman, M. Introduction to Physics and Chemistry of Combustion: Explosion, Flame, Detonation / M. Liberman. - Berlin: Springer, 2010. - 360 p.

    4.Khokhlov, A.M. Numerical simulation of deflagration-to-detonation transition: the role of shock-flame interactions in turbulent flames / A.M. Khokhlov, E.S. Oran, G.O. Thomas // Combustion and Flame. - 1999. - Vol. 117, Iss. 1-2. - pp. 323 - 339.

    5.Oran, E.S. Origins of the deflagration-to-detonation transition in gas-phase combustion / E.S. Oran, V.N. Gamezo // Combustion and Flame. - 2007. - Vol. 148, Iss. 1 2. - pp. 4 - 47.

    6.Baklanov, D.I. Transition of deflagration to detonation in turbulent flow in pulse detonation engine / D.I. Baklanov, L.G. Gvozdeva, A. Kaltayev, N. B. Scherbak // Application of Detonation to Propulsion. Eds. G. Roy, S. Frolov, J. Shepherd. - Moscow: TORUS PRESS, 2004. - pp. 86 - 90.

    7.Ciccarelli, G. Flame acceleration and transition to detonation in ducts / G. Ciccarelli, S. Dorofeev // Progress in Energy and Combustion Science. - 2008. - Vol. 34, Iss. 4. - pp. 499 - 550.

    8.Valiev, D. Flame acceleration in channels with obstacles in the deflagration-to-detonation transition / D. Valiev, V. Bychkov, V. Akkerman et al. // Combustion and Flame. - 2010. - Vol. 157, Iss. 5. - pp. 1012 - 1021.

    9.Bradley, D. Flame acceleration due to flame-induced instabilities in large-scale explosions / D. Bradley, T.M. Cresswell, J.S. Puttock // Combustion and Flame. - 2001. - Vol. 124, Iss. 4. - pp. 551 - 559.

    10.Aslanov, S.K. Instability and Structure of Flames / S.K. Aslanov, V.E. Volkov // Pulsed and Continuous Detonations. - Moscow: TORUS PRESS, 2006. - pp. 28 - 31.

  • Creative Commons License by Author(s)