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Investigations of Thermo-Acoustic Instabilities by Direct Acoustic Admittance Measurements

Published online by Cambridge University Press:  05 May 2011

Tzeng-Yuan Chen  and
Man-Ge Chen
Tzeng-Yuan Chen*
Affiliation:
Department of Aerospace Engineering, Tamkang University, Taipei County, Taiwan 25137, R.O.C.
Man-Ge Chen*
Affiliation:
Department of Aerospace Engineering, Tamkang University, Taipei County, Taiwan 25137, R.O.C.
*
*Associate Professor
**Graduate Research Assistant
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Abstract

This research applied the method of direct acoustic admittance measurement to investigate effects of the flame character and the burner acoustic admittance on the flame-driving behavior. The acoustic admittance data were obtained by directly measuring the amplitudes of pressure and velocity oscillations, and the phase relations between the pressure and velocity oscillations. Results of this research reveal that the flame-driving characteristic is mainly dominated by the nonreactive burner admittance not the flame. Whether the flame is to drive or damp the acoustic field is detcrmined by the acoustic admittance of the burner system. The flame equivalence ratio plays a role mainly in determining the magnitude of the flame driving/damping.

Keywords

Laminar premixed flameAcoustic admittanceCombustion instability
Type
Articles
Information
Journal of Mechanics , Volume 16 , Issue 3 , September 2000 , pp. 133 - 136
Copyright
Copyright © The Society of Theoretical and Applied Mechanics, R.O.C. 2000

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References

REFERENCES

1Raun, R. L., Beckstead, J. C., Finlinson, J. C. and Brooks, K. P., “A Review of Rijke Tubes, Rijke Burners and Related Devices,” Prog. Energy Combust. Sci., 19, pp. 313–364 (1993).CrossRefGoogle Scholar
2Hegde, U. G. and Zinn, B. T., 21th Symposium (International) on Combustion. The Combustion Institute, pp. 1993–2000 (1986).Google Scholar
3Sankar, S. V., “Investigation of the Flame-Acoustic Wave Interaction during Axial Solid Rocket Instabilities,” Ph.D. Dissertation, Georgia Institute of Technology (1987).CrossRefGoogle Scholar
4Chen, T. Y., Hegde, U. G., Daniel, B. R. and Zinn, B. T., “Flame Radiation and Acoustic Intensity Measurements in Acoustically Excited Diffusion Flames,” Journal of Propulsion and Power, 9(2), p. 210 (1993).CrossRefGoogle Scholar
5Mugridge, B. D., “Combustion Driven Oscillations,” Journal of Sound and Vibration, 70(3), P. 437 (1980).CrossRefGoogle Scholar
6McIntosh, A. C., “The Effect of Upstream Acoustic Forcing and Feedback on the Stability and Resonance Behavior of Anchored Flames,” Combustion Science and Technology, 49, p. 143 (1986).CrossRefGoogle Scholar
7Caveny, L. H., Collins, K. L. and Cheng, S. W., “Direct Measurement of Acoustic Admittances Using Laser Doppler Velocimetry,” AIAA Journal, 19, p. 913 (1981).CrossRefGoogle Scholar
8Chen, T. Y. and Chen, M. G., “Sound Emission of Ducted Premixed Flames,” Journal of Sound and Vibration, 221(2), pp. 221–234 (1999).CrossRefGoogle Scholar
9Zinn, B. T., “Longitudinal Mode Acoustic Losses in Short Nozzles,” Journal of Sound and Vibration, 22(1), pp. 93–105 (1972).Google Scholar
10Turns, S. R., An Introduction to Combustion, McGraw-Hill Book Co., p. 228 (1996).Google Scholar