ATTENUATION OF DETONATION WAVES IN LAYERS OF
HOMOGENEOUS AND INHOMOGENEOUS MONODISPERSE
GAS SUSPENSION IN SHARPLY EXPANDING PIPES
V.F. Burnashev1, U.A. Nazarov2 1Samarkand State University
Samarkand - 140100, UZBEKISTAN 2 Samarkand State University of
Architecture and Civil Engineering
Samarkand - 140100, UZBEKISTAN
Mathematical simulation of the propagation mechanisms of combustion waves and heterogeneous detonation in sharply expanding pipes was performed using the equations of two-dimensional axisymmetric unsteady motion of a reacting mixture of a gas and monofuel particles. The interaction of a passing detonation wave in gas suspensions of a unitary fuel with an obstacle is studied. It is established that a decrease in the diameter of the particles of the unitary fuel leads to a decrease in the maximum pressure on the wall. It is shown that, under other identical conditions, the distribution of the concentration of particles of unitary fuel according to a linearly decreasing law leads to the greatest decrease in the maximum pressure on the barrier than according to a linearly increasing and homogeneous one.
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References
[1] M. Arienti, J.E. Shepherd, A numerical study of detonation diffraction, J.
Fluid Mech., 529 (2005), 117-146.
[2] O.M. Belotserkovskii and Yu. M. Davydov, Method of Large Particles in
Gas Dynamics, Nauka, Moscow (1982) [in Russian].
[3] V.F. Burnashev, U.A. Nazarov, B. Khuzhaerov, Detonation waves in polydisperse gas suspensions of monofuel in tubes with an abrupt expansion,
Journal of Fluid Dynamics, 51, No 4 (2016), 507-512.
[4] A.V. Fedorov, T.A. Khmel, S.A. Lavruk, Exit of a heterogeneous detonation wave into a channel with linear expansion. I. Propagation regimes,
Combustion, Explosion, and Shock Waves, 53, No 5 (2017), 585-595.
[5] A.V. Fedorov, T.A. Khmel, S.A. Lavruk, Exit of a Heterogeneous Detonation Wave into a Channel with Linear Expansion. II. Critical Propagation
Condition, Combustion, Explosion, and Shock Waves, 54, No 1 (2018),
72-81.
[6] Yu.V. Kratova, A.V. Fedorov, T.A. Khmel, Propagation of detonation
waves in gas suspensions in channels with a backward-facing step, Fiz.
Goreniya Vzryva, 47, No 1 (2011), 80-91.
[7] A. G. Kutushev, Mathematical Modeling of Wave Processes in Particle-Air
Suspensions and Powder Media, Nedra, St. Petersburg (2003) [in Russian].
[8] A.G. Kutushev, B.F. Burnashev, U.A. Nazarov, Numerical Study of detonation waves in a monofuel-gas mixture in sharply expanding pipes, Combustion,
Explosion, and Shock Waves, 49 (2013), 418-423.
[9] R.I. Nigmatullin, Dynamics of Multiphase Media, Nauka, Moscow (1987)
[in Russian].
[10] E.G. Pantov, M. Fischer, Th. Kratzel, Decoupling and recoupling of detonation waves associated with sudden expansion, Shock Waves, 6 (1996),
131–137.