Abstract
It is well known (Takayama and Ben-Dor 1986; Takayama 1990; Achasov et al. 1993a) that when a plane shock wave collides with a circular concave wall, the reflected shock wave from the concave wall forms a focus or a caustic at which the pressure and the temperature can be enhanced. Usually regions of high energy density are produced by the focused waves. It has been observed that the shock wave energy for initiation of detonation in a given explosive mixture can substantially decrease when focusing phenomenon is used (Borisov et al. 1990; Chan et al. 1990; Achasov et al. 1993b). It was demonstrated that fast turbulent mixing of hot combustion products with the reactants may lead to the onset of a detonation (Oppenheim 1970; Carnasciali et al. 1991). An interaction of supersonic jets can cause the enhancing of the pressure and the temperature and, consequently, detonation initiation. The present article describes the results of such investigation.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Achasov, O.V., Kondrashov, V.V., Labuda, S.A., Penyazkov, O.G., and Shabunya, S.I. (1993a) Shock waves Interaction with circular concave walls, Kchimitcheskaya physika (in Russian) 12, 634–636
Achasov, O.V., Labuda, S.A., Penyazkov, O.G., Pushkin, R.M., and Tarasov, A.I. (1993b) Shock wave initiation of the detonation in a semiclosed cavity, Kchimitcheskaya physika (in Russian) 12, 714–716.
Borisov, A.A., Zamanscii, V.M., Kosenkov, V.V., Lisyanskii, V.V., Skachkov, G.I., Troshin, K.Ya. and Gelfand, B.E. (1990) Ignition of gaseous combustible mixtures in focused shock waves, in Current topics in shock waves (Y.W. Kim, Ed.), AIP Conference proceedings, American Inst. of Physics, N.Y., No. 208, pp. 696–701
Carnasciali, F., Lee, J.H.S., and Knystautas, R. (1991) Turbulent jet initiation of detonation, Combust. and flame 84, 170–180.
Chan, C.K., Lau, D., Thibault, P.A. and Penrose, J.D. (1990) Ignition and detonation initiation by shock focusing, in Current topics in shock waves (Y.W. Kim, Ed.), AIP Conference proceedings, American Inst, of Physics, N.Y., No. 208, pp. 161–166.
Oppenheim, A.K. (1970) Introduction to gasdynamics of explosions. Springer-Verlag, New York.
Takayama, K. and Ben-Dor, G. (1986) Reflection and difraction of shock waves over a circular concave wall, in Reports of the Institute of High Speed Mechanics, Tohoku Univ. (K. Takayama, Ed.), Konno Printing Co., Sendai, 51, pp. 43–87
Takayama, K. (Ed.) (1990) Proceedings of the International Workshop on Shock Wave Focusing, Tohoku Print, Sendai.
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 1997 Springer Science+Business Media Dordrecht
About this paper
Cite this paper
Achasov, O.V., Kondrashov, V.V., Penyazkov, O.G. (1997). Direct Initiation of Gaseous Detonation by Interacting Supersonic Jets. In: Champion, M., Deshaies, B. (eds) IUTAM Symposium on Combustion in Supersonic Flows. Fluid Mechanics and Its Applications, vol 39. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-5432-1_30
Download citation
DOI: https://doi.org/10.1007/978-94-011-5432-1_30
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-010-6285-5
Online ISBN: 978-94-011-5432-1
eBook Packages: Springer Book Archive