Open AccessEffect of the variable gradient of sound speed on pulsating combustion of the solid fuel in Helmholtz resonator-type setup
Author(s) -
В. М. Ларионов,
O. V. Iovleva,
A. O. Malahov,
I. V. Larionova
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1588/1/012022
Subject(s) - helmholtz resonator , speed of sound , acoustics , combustion , helmholtz free energy , resonator , amplitude , physics , constant (computer programming) , temperature gradient , work (physics) , mechanics , sound pressure , pressure gradient , thermodynamics , optics , chemistry , computer science , meteorology , organic chemistry , programming language
In previous works, a theoretical study of pulsating combustion of solid fuel in Helmholtz-resonator-type setup was carried out under the condition that the distribution of the sound speed in the combustion products is constant, i.e. independent of the amplitude of gas oscillations. In this work, it is assumed that the gradient of sound speed linearly depends on the amplitude of pressure fluctuations in the combustion chamber. It is shown that the frequency of oscillations calculated for variable gradient of the sound speed differs significantly from the frequency that corresponds to a constant gradient.