Abstract
Acoustic characteristics in an industrial gas-turbine combustor are numerically investigated by a linear acoustic analysis. Spatially non-homogeneous temperature field in the combustor is considered in the numerical calculation and the characteristics are analyzed in view of acoustic instability. Acoustic analyses are conducted in the combustors without and with acoustic resonator, which is one of the acoustic-damping devices or combustion stabilization devices. It has been reported that severe pressure fluctuation frequently occurs in the adopted combustor, and the measured signal of pressure oscillation is compared with the acoustic-pressure response from the numerical calculation. The numerical results are in good agreement with the measurement data. In this regard, the phenomenon of pressure fluctuation in the combustor could be caused by acoustic instability. From the numerical results for the combustor with present acoustic resonators installed, the acoustic effects of the resonators are analyzed in the viewpoints of both the frequency tuning and the damping capacity. It is found that the resonators with present specifications are not optimized and thus, the improved specification or design is required.
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References
Aigner, M. and Möller, G., 1993, “Second-Generation Low-Emission Combustors for ABB Gas Turbines: Field Measurements with GT11N-EV,”Journal of Engineering for Gas Turbines and Power, Vol. 115, pp. 533–536.
Chapra, S.C. and Canale, R. P., 1989,Numerical Methods for Engineers, 2nd ed., McGraw-Hill, Singapore.
Culick, F. E. C. and Yang, V., 1995, inLiquid Rocket Engine Combustion Instability (V. Yang, and W. E. Anderson, eds.),Progress in Astronautics and Aeronautics, Vol. 169, AIAA, Washington DC, pp. 3–38.
Fleifil, M., Armaswamy, A. M., Ghoniem, Z. A., and Ghoniem, A. F., 1996, “Response of a Laminar Premixed Flame to Flow Oscillations: A Kinematic Model and Thermoacoustic Instability Results,”Combustion and Flame, Vol. 106, pp. 487–510.
Harrje, D. J. and Reardon, F.H.(eds.), 1972,Liquid Propellant Rocket Combustion Instability, NASA SP-194.
Kang, K. T. and Yoon, J. K., 1994, “Analysis of Combustion Instability in a Smokeless Propellant Rocket Motor,”Transactions of The KSME(B), Vol. 18, No. 11, pp. 3032–3038.
Laudien, E., Pongratz, R., Pierro, R., and PrecLik, D., 1995, inLiquid Rocket Engine Combustion Instability (V. Yang, and W. E. Anderson, eds.),Progress in Astronautics and Aeronautics, Vol. 169, AIAA, Washington DC, pp. 377–399.
Lefebvre, A. H., 1998,Gas Turbine Combustion, 2nd ed., Taylor & Francis, Ann Arbor, MI.
McManus, K. R., Poinsot, T., and Candel, S. M., 1993, “A Review of Active Control of Combustion Instabilities,”Progress in Energy and Combustion Science, Vol. 19, pp. 1–29.
NASA, 1974, “Liquid Rocket Engine Combustion Stabilization Devices,” NASA SP-8113.
SAS, 1992,ANSYS User’s Manual for revision 5.0, Volume I, Procedures, Swanson Analysis Systems, Inc., Houston, PA.
SAS, 1993,ANSYS User’s Manual for revision 5.0, Volume IV, Theory, Swanson Analysis Systems, Inc., Houston, PA.
Sattelmayer, T., Felchlin, M. P., Haumann, J., Hellat, J., and Styner, D., 1992, “Second-Generation Low-Emission Combustors for ABB Gas Turbines: Field Measurements with GT11N-EV,”Journal of Engineering for Gas Turbines and Power, Vol. 114, pp. 118–125.
Seo, S., 2003, “Combustion Instability Mechanism of a Lean Premixed Gas Turbine Combustor,”KSME International Journal, Vol. 17, No. 6, pp. 906–913.
Sohn, C. H., 2002a, “Unsteady Analysis of Acoustic Pressure Response in N2 Diluted H2 and Air Diffusion Flames,”Combustion and Flame, Vol. 128, pp. 111–120.
Sohn, C. H., 2002b, “A Numerical Study on Acoustic Behavior in Baffled Combustion Chambers,”Transactions of the KSME(B), Vol.27, No. 1, pp. 966–975.
Sohn, C. H., Chung, S. H., Kim, J. S., and Williams, F. A., 1996, “Acoustic Response of Droplet Flames to Pressure Oscillations,”AIAA Journal, Vol. 34, No. 9, pp. 1847–1854.
Sohn, C. H., Kim, S.-K., and Kim, Y.-M., 2004, “Effects of Various Baffle Designs on Acoustic Characteristics in Combustion Chamber of Liquid Rocket Engine,”KSME International Journal, Vol. 18, No. 1, pp. 154–161.
Sohn, C. H. and Kim, Y.-M., 2002, “A Numerical Study on Acoustic Behavior in Combustion Chamber with Acoustic Cavity,”Journal of The Korean Society for Aeronautical and Space Sciences, Vol. 30, No. 4, pp. 28–37.
Wicker, J. M., Yoon, M. W., and Yang, V., 1995, “Linear and Non-linear Pressure Oscillations in Baffled Combustion Chambers,”Journal of Sound and Vibration, Vol. 184, pp. 141–171.
Yang, Y. J., Akamatsu, F., and Katsuki, M., 2003, “Characteristics of Self-excited Combustion Oscillation and Combustion Control by Forced Pulsating Mixture Supply,”KSME International Journal, Vol. 17, No. 11, pp. 1820–1831.
Zucrow, M. J. and Hoffman, J. D., 1977,Gas Dynamics, Vol. II, John Wiley & Sons, Inc., New York.
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Sohn, C.H., Cho, H.C. Numerical analysis of acoustic characteristics in gas turbine combustor with spatial non-homogeneity. KSME International Journal 18, 1461–1469 (2004). https://doi.org/10.1007/BF02984259
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DOI: https://doi.org/10.1007/BF02984259