Abstract
An experimental study of the influence of condensation of supersaturated carbon vapor formed behind reflected shock waves on the process of propagation of a shock wave and formation of a detonation wave of condensation is carried out. Highly supersaturated carbon vapor was formed from thermal decay of unstable carbon suboxide C3O2 → C + 2CO behind a shock wave in mixtures containing 10–30% C3O2 in Ar. This reaction was followed by fast growth of condensed carbon particles, accompanied by heat release. Experiments have shown a considerable temperature and pressure increase in the narrow zone behind the wave front, resulting in shock wave amplification and transition to a detonation-like regime. An analysis of the kinetics and heat release in the given conditions and calculations based upon one-dimensional detonation theory have shown that in a mixture of 10% C3O2 + Ar, insufficient heat release resulted in a regime of “overdriven detonation”. In a mixture of 20% C3O2 + Ar a very good coincidence of measured values of pressure and wave velocity with calculated Chapman–Jouguet parameters is observed. In a 30% C3O2 + Ar mixture, an excess heat release caused a slow down of the effective condensation rate and a regime of “underdriven detonation” is observed.
Similar content being viewed by others
References
Vasil’ev A.A., Pinaev A.V.: Formation of carbon clusters in deflagration and detonation waves in gas mixtures. Combust. Explos. Shock Waves 44, 317 (2008)
Emelianov A.V., Eremin A.V., Makeich A.A. et al.: Heat release of carbon particle formation from hydrogen-free precursors behind shock waves. Proc. Combust. Inst. 31, 649 (2007)
Doerge K.J., Tanke D., Wagner H.Gg.: Particle formation in carbon suboxide pyrolysis behind shock waves. Z. Phys. Chem. 212, 219 (1999)
Emelianov A.V., Eremin A.V., Gurentsov E.V. et al.: Time and temperature dependence of carbon particle growth in various shock wave pyrolysis processes. Proc. Combus. Inst. 30, 1433 (2005)
Emelianov A., Eremin A., Fortov V., Jander H., Makeich A., Wagner H.Gg.: Detonation wave driven by condensation of supersaturated vapor. Phys. Rev. E 79(3), 035303 (2009)
Zverev, I.N., Smirnov, N.N.: Gas Dynamics of Combustion, p. 307, MGU, Moscow (1987)
Wagner H.Gg., Vlasov P.A., Doerge K.J. et al.: Kinetics of carbon cluster formation during pyrolysis of C3O2. Kinetika Kataliz. 5, 645 (2001)
Chase, M.W. Jr., Davies, C.A., Downey, J.R., Frurip, D.J. Jr., McDonald, R.A., Syverud, A.N.: JANAF Thermochemical Tables, 3rd edn., Parts I–II. J. Phys. Chem. Ref. Data 14, Suppl. 1 (1985)
Martin J.M.L., Francois J.P., Gijbels R.: On the heat of formation of C5 and higher carbon clusters. J. Chem. Phys. 95, 9420 (1991)
Kirk A.F., Othmer D.F.: Encyclopedia of Chemical Technology, 4th edn., vol. 4, pp. 1039. Wiley, New York (1992)
Deppe J., Emelianov A., Eremin A., Jander H., Wagner H.Gg., Zaslonko I.: Carbon particle formation and decay in two-step pyrolysis of carbon suboxide behind shock waves. Proc. Combust. Inst. 28, 2515 (2000)
Author information
Authors and Affiliations
Corresponding author
Additional information
Communicated by L. Bauwens.
This paper is based on work that was presented at the 22nd International Colloquium on the Dynamics of Explosions and Reactive Systems, Minsk, Belarus, July 27–31, 2009.
Rights and permissions
About this article
Cite this article
Emelianov, A., Eremin, A. Detonation wave initiated by explosive condensation of supersaturated carbon vapor. Shock Waves 20, 491–498 (2010). https://doi.org/10.1007/s00193-010-0254-2
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s00193-010-0254-2