Acceleration of Dispersed Particles by Gas Detonation Productions in an Expanding Channel
I. S. Batraev, E. S. Prokhorov, V. Yu. Ul'yanitskii
Lavrent'ev Institute of Hydrodynamics, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090 Russia
Keywords: gas detonation, detonation products in an expanding channel, acceleration of dispersed particles, recording of self-luminescence, photosensor
Abstract
This paper describes an experimental study and a quasi-one-dimensional calculation of acceleration of dispersed particles by gas detonation products in an expanding channel. The calculations show the possibility of a significant increase in the velocity of powder particles due to the conical expansion of a detonation channel. For particles with sizes of 30 ÷ 40 mm at cone angles of 2 ÷ 4 ºC, the maximum velocity increase reaches 35 ÷ 60 %. A method is developed for fixing the luminescence of a packet of dispersed particles accelerated in a detonation channel by a photosensor, which makes it possible to measure the particle velocity with an accuracy of ±5 %. The calculation results are in good agreement with the experimental data.
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