650 - Conditions of excitation of sound for condensed and gas fuels
Samsonov V., Murunov E.
Abstract
It is shown that the reverse connection between the acoustic oscillations of the pressure and the burning rate is supported by the vortex motion of gas near the 'singing' flame in model combustion chamber. The conditions of exciting of the sound are obtained for diffusion flames of condensed and gaseous fuels. Also the kinetic flames of propane-air mixtures were studied. The changed parameters were: the velocities of the fuel and burning products, ratio of the diameters of the burner and resonator-tube. The kind of the fuel detemines the profiles of the temperatures and velocities in combustion chamber. It is found that there is the dependence between the soun power and flame structure. The most minimal heat power that excitate the sound is obtained for the flame of condensed fuel. The influence of the forced convective flow is studied. The explanation of the experimental results is presented.
Citation
Samsonov V.; Murunov E.: Conditions of excitation of sound for condensed and gas fuels, CD-ROM Proceedings of the Thirtheenth International Congress on Sound and Vibration (ICSV13), July 2-6, 2006, Vienna, Austria, Eds.: Eberhardsteiner, J.; Mang, H.A.; Waubke, H., Publisher: Vienna University of Technology, Austria, ISBN: 3-9501554-5-7
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