On supersonic combustion
Some basic concepts and features of supersonic combustion are explained from the view point of macroscopic aerodynamics. Two kinds of interpretations of supersonic combustion are proposed. The difference between supersonic combustion and subsonic combustion is discussed, and the mechanism of supersonic combustion propagation and the limitation of heat addition in supersonic flow are pointed out. The results of the calculation of deflagration in supersonic flow show that the entropy increment and the total pressure loss of the combustion products may decrease with the increase of combustion velocity. It is also demonstrated that the oblique detonation wave angle may not be controlled by the wedge angle under weak underdriven solution conditions and be determined only by combustion velocity. Therefore, the weak underdriven solution may become self-sustaining oblique detonation waves with a constant wave angle.
Keywordssupersonic combustion deflagration oblique detonation hypersonic ramjet
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- 1.Heiser, W. H., Pratt, D. T.,Hypersonic Airbreathing Propulsion, Washington D. C.: AIAA Inc., 1994.Google Scholar
- 2.Beach, H., Lee, Jr., Supersonic combustion status and issues,Major Research Topics in Combustion (ed. Hussaini, M. Y.), New York: Springer-Verlag, 1993, 1–15.Google Scholar
- 3.Liu Ling,Supersonic Combustion and Scramjets (in Chinese), Xi’an: North West Tech. Univ. Publish Agency, 1993.Google Scholar
- 4.Walker, R. W., Position paper on chemical kinetics of combustion processes,Major Research Topics in Combustion (ed. Hussaini, M. Y.), New York: Springer-Verlag, 1993, 277–308.Google Scholar
- 5.Builder, C. H.,On the Thermodynamic Spectrum of Airbreathing Propulsion, Washington D. C.: AIAA Inc., 1964, p64.Google Scholar
- 6.Shapiro, A. H.,Dynamics and Thermodynamics of Compressible Fluid Flow, New York: Ronald Press Company, 1953, 231.Google Scholar
- 7.Strehlow, R. A.,Combustion Fundamentals, New York: McGraw-Hill Book Company, 1984.Google Scholar
- 8.Yuan, S., Huang, Z.,Optimality of C-J Oblique Detonation as Supersonic Combustion Modes, Washington D. C.: AIAA 1993, 93–3015.Google Scholar
- 9.Billig, F. S., Dugger, G. L., The interaction of shock waves and heat addition in the design of supersonic combustors,12th Symposium (International) on Combustion, Poitiers France, 1968, 1125–1134.Google Scholar
- 10.Kenneth, K.,Principles of Combustion, New York: John Wiley, 1986.Google Scholar
- 11.Pratt, D. T., Humphrey, J. W., Glenn, D. E.,Morphology of a Standing Oblique Detonation Wave, Washington D. C.: AIAA Inc., 1987, 87.Google Scholar