Realization and modeling of continuous spin detonation of a hydrogen-oxygen mixture in flow-type combustors. 1. Combustors of cylindrical annular geometry
- 79 Downloads
- 3 Citations
Abstract
A comprehensive numerical and experimental study of continuous spin detonation of a hydrogen-oxygen mixture in flow-type cylindrical annular combustors 4 and 10 cm in diameter is performed. Hydrogen is injected through injectors, and oxygen is supplied as a continuous flow through an annular slot. The flow structure is studied with variations of the flow rates of the components of the mixture and the width of the slot for oxygen supply. The region of existence of continuous spin detonation is determined as a function of the fuel-to-air equivalence ratio and specific flow rates of the components with variations of the relative width of the slot and combustor diameter. A two-dimensional unsteady gas-dynamic problem of rotation dynamics of a transverse detonation wave with geometric parameters of the combustor corresponding to those used in experiments is solved numerically. A comparison with experiments is performed, and reasonable agreement is reached for the detonation velocity and mean pressure in the combustor. It is shown that the geometric size of the transverse detonation waves is underestimated because the gas-dynamic model does not involve the mixing process, and the number of waves is almost doubled.
Key words
continuous spin detonation flow-type combustor transverse detonation waves flow structure mathematical modelingPreview
Unable to display preview. Download preview PDF.
References
- 1.F. A. Bykovskii, S. A. Zhdan, and E. F. Vedernikov, “Continuous spin detonations,” J. Propuls. Power, 22, No. 6, 1204–1216 (2006).CrossRefGoogle Scholar
- 2.F. A. Bykovskii, S. A. Zhdan, and E. F. Vedernikov, “Continuous spin detonation of hydrogen-oxygen mixtures. 1. Annular cylindrical combustors, Combust., Expl., Shock Waves, 44, No. 2, 150–162 (2008).CrossRefGoogle Scholar
- 3.F. A. Bykovskii and E. F. Vedernikov, “Continuous detonation of a subsonic flow of a propellant,” Combust., Expl., Shock Waves, 39, No. 3, 323–334 (2003).CrossRefGoogle Scholar
- 4.F. A. Bykovskii, S. A. Zhdan, and E. F. Vedernikov, “Continuous spin detonation in annular combustors,” Combust., Expl., Shock Waves, 41, No. 4, 449–459 (2005).CrossRefGoogle Scholar
- 5.F. A. Bykovskii, “High-speed waiting photodetector,” Zh. Nauch. Prikl. Fotogr. Kinemat., No. 2, 85–89 (1981).Google Scholar
- 6.B. V. Voitsekhovskii, V. V. Mitrofanov, and M. E. Topchiyan, Detonation Front Structure in Gases [in Russian], Izd. Sib. Otd. Akad. Nauk SSSR, Novosibirsk (1963).Google Scholar
- 7.S. A. Zhdan, F. A. Bykovskii, and E. F. Vedernikov, “Mathematical modeling of a rotating detonation wave in a hydrogen-oxygen mixture,” Combust., Expl., Shock Waves, 43, No. 4, 449–459 (2007).CrossRefGoogle Scholar
- 8.Yu. A. Nikolaev and D. V. Zak, “Agreement of models of chemical reactions in gases with the second law of thermodynamics,” Combust., Expl., Shock Waves, 24, No. 4, 461–463 (1988).CrossRefGoogle Scholar
- 9.F. A. Bykovskii, S. A. Zhdan, and E. F. Vedernikov, “Continuous spin detonation in fuel-air mixtures,” Combust., Expl., Shock Waves, 42, No. 4, 463–471 (2006).CrossRefGoogle Scholar
- 10.L. I. Sedov, Mechanics of Continuous Media [in Russian], Nauka, Moscow (1973).Google Scholar
- 11.B. Lewis and G. von Elbe, Combustion, Flame, and Explosions of Gases, New York (1961).Google Scholar
- 12.G. N. Abramovich, Applied Gas Dynamics [in Russian], Nauka, Moscow (1976).Google Scholar