Self-exited gas oscillations in Helmholtz resonator type combustor

7th Conference on Low temperature Plasma in the Processes of Functional Coating Preparation

Larionov, V.M.^1 ; Saifullin, E.R.^1 ; Semenova, E.V.^1

Kazan Federal University, 18 Kremlyovskaya str., Kazan

420008, Russia^1

关键词: Acoustic wavelength;    Calculation results;    Experimental set up;    Gas oscillations;    Helmholtz resonators;    Lower frequencies;    Multi-port burners;    Resonance tube;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/669/1/012047/pdf
DOI  :  10.1088/1742-6596/669/1/012047

来源: IOP

【 摘 要 】

When the length of the resonance tube is much less and order of the acoustic wavelength is studied. Experimental set-up with a multiport burner is considered. The "energy balance" method is used to calculate the frequency and amplitude of the gas oscillations. The results of measurements and calculations show that increasing the length of the resonance tube causes the excitation oscillation with a first lower frequency. Further, there are no oscillations. When the length of the resonance tube becomes the order of the wavelength, the second resonant frequency is excited. The calculation results are in good agreement with the experimental data.