On the Raushenbakh Resonance

Autor: M. E. Stavrovskii, E. V. Radkevich, M. I. Sidorov, O. A. Vasil’eva
Rok vydání: 2021
Předmět:
Zdroj: Moscow University Mechanics Bulletin. 76:65-77
ISSN: 1934-8452
0027-1330
DOI: 10.3103/s0027133021030055
Popis: The author’s method of thermodynamic analysis is used to single out two equations of state for the laminar combustion process: the classical Hugoniot adiabat, which determines the pressure, and the equation of state, which determines the entropy. This allows constructing a new mathematical model of the laminar process of vibrational combustion of a two-component mixture by closing the classical models of continuum mechanics. The model is phenomenological, which requires its verification. For numerical verification, the well-known experimental fact is chosen, the appearance of high-frequency acoustic vibrations described by B.V. Raushenbakh. The conditions for the origin of high-frequency oscillations are obtained in terms of the standard chemical potential. They can substantially disturb the combustion process and may cause a catastrophic break-up of the furnace of the engine structure. A numerical experiment established critical values of the standard chemical potential when high-frequency vibrations lead to destruction.
Databáze: OpenAIRE
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