|
This article is cited in 17 scientific papers (total in 17 papers)
Detonation of a coal-air mixture with addition of hydrogen in plane-radial vortex chambers
F. A. Bykovskiia, S. A. Zhdana, E. F. Vedernikova, Yu. A. Zholobovb a Lavrent’ev Institute of Hydrodynamics, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090, Russia
b Novosibirsk State University, Novosibirsk, 630090, Russia
Abstract:
Results of an experimental study of continuous and pulsed detonation of a coal-air mixture with addition of hydrogen in plane-radial vortex chambers 204 and 500 mm in diameter are presented. The tested substance is pulverized activated charcoal. A method of coal powder supply through narrow channels by means of adding the gas at the injector entrance is found. Stable regimes of continuous spin detonation with one or two transverse detonation waves moving with velocities of 1.8–1.6 km/sec are obtained for the first time in the combustor 204 mm in diameter. The frequency of pulsed detonation with radial waves is 4–4.8 kHz. The limits of continuous detonation in the combustor 500 mm in diameter are extended: regimes of continuous spin detonation with a large number (5–8) of transverse waves moving with velocities of 1.8–1.5 km/sec are obtained, the amount of hydrogen added to coal is reduced to 2.8%, and combustion of coarser fuel particles is ensured owing to an increased residence time of the mixture in the combustor. The wave structure and the flow in the vicinity of the waves are reconstructed in the combustor plane.
Keywords:
coal-air mixture, continuous spin detonation, pulsed detonation, plane-radial chamber, flow structure.
Received: 01.06.2010 Accepted: 24.11.2010
Citation:
F. A. Bykovskii, S. A. Zhdan, E. F. Vedernikov, Yu. A. Zholobov, “Detonation of a coal-air mixture with addition of hydrogen in plane-radial vortex chambers”, Fizika Goreniya i Vzryva, 47:4 (2011), 109–118; Combustion, Explosion and Shock Waves, 47:4 (2011), 473–482
Linking options:
https://www.mathnet.ru/eng/fgv1117 https://www.mathnet.ru/eng/fgv/v47/i4/p109
|
|