Natural oscillations of a gas in an elongated combustion chamber

10th International Conference on Aerophysics and Physical Mechanics of Classical and Quantum Systems

物理学;力学

Nesterov, S.V.^1 ; Akulenko, L.D.^1 ; Baydulov, V.G.^1

A. Ishlinsky Institute for Problems in Mechanics of the RAS, 101/1, prospect Vernadskogo, Moscow

119526, Russia^1

关键词: Combustion pro-cess;    Materials flow;    Natural oscillation;    Organ pipes;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/815/1/012021/pdf
DOI  :  10.1088/1742-6596/815/1/012021

学科分类：力学，机械学

来源: IOP

【 摘 要 】

For the analysis of the frequencies and shapes of the natural oscillations of a gas in an elongated rectilinear combustion chamber, this chamber can be treated as a kind of an organ pipe that has the following specific features: 1. the chamber has an inlet and outlet nozzles; 2. a gas mixture burns in the combustion chamber; 3. the combustion materials flow out from the outlet nozzle; 4. the gas flows in such a way that its velocity in the larger part (closer to the outlet nozzle) of the chamber exceeds the speed of sound (Mach number M > 1). There are only separate domains (one or several), where M