DOI QR코드

DOI QR Code

Geometric Effects on Damping Characteristics of Acoustic Cavity for the Control of Combustion Instabilities

연소불안정 제어를 위한 음향공의 감쇠에 대한 형상 효과

  • Published : 2006.06.30

Abstract

Acoustic cavity as a stabilization device to control high-frequency combustion instabilities in liquid rocket engine is adopted and its damping capacity is verified in atmospheric temperature. First, harmful resonant frequency in a modeling chamber can be damped effectively by the installation of properly-tuned acoustic cavity. Besides, geometric effects of acoustic cavity on damping characteristics are analyzed and compared quantitatively. Satisfactory agreements have been achieved with linear acoustic analysis and experimental approach. Results show that the acoustic cavity of the largest orifice area or the shortest orifice length was the most effective in acoustic damping of the harmful resonant frequency. Finally, it is proved that an optimal design process is indispensable for the effective control of combustion instabilities.

References

  1. Harrje D. J and Reardon, F. H (eds), 'Liquid Propellant Rocket combustion instability', SP-194, NASA, 1972
  2. Natanzon, M. S., 1996, Combustion Instability, (Natanzon, M. S. and Culick, F. E. C., eds)
  3. Laudien, E., Pongratz, R., and Preclik, D., 'Experimental Procedures Aiding the Design of Acoustic Cavities', in Liquid Rocket Engine Combustion Instability (Yang, V. and Anderson, W. E., eds), Progress in Astronautics and Aeronautics, Vol. 169, AIAA, Washington DC, 1995, pp. 377-399
  4. Ko, Y. S., Lee, K. J. and Kim, H. J., 2004, 'Acoustic Tests on Atmospheric Condition in a Liquid Rocket Engine Chamber', Transactions of KSME(B), Vol. 28, No. 1, pp. 16-23 https://doi.org/10.3795/KSME-B.2004.28.1.016
  5. 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 https://doi.org/10.5139/JKSAS.2002.30.4.028
  6. Kim, S.-K., Kim, H. J. and Sooo, C. H., 2004, 'Development of Analysis Code for Evaluation of Acoustic Stability of Rocket Engine Combustor with Various Designs', Journal of the Korean Society for Aeronautical and Space Sciences, Vol. 32, No. 6, pp. 110-116
  7. Kim, H. J., Kim, S.-K. and Seol, W. S., 2004, 'Acoustic Analysis for Design Optimization of Hub-Blade Baffle in Liquid Rocket Engine', Transactions of the KSME(B), Vol. 28, No. 8, pp. 945-952 https://doi.org/10.3795/KSME-B.2004.28.8.945
  8. Oberg, C. L., 1971, 'Combustion Stabilization with Acoustic Cavities', Journal of Spacecraft and Rockets, Vol. 8, No. 12, pp. 1220-1225 https://doi.org/10.2514/3.30366
  9. NASA, 1974, 'Liquid Rocket Engine Combustion Stabilization Devices', NASA SP-8113
  10. Rocker, M. and Nesman, T. E., 1998, 'Elimination of High-Frequency Combustion Instability in the Fastrac Engine Thrust Chamber', The Tenth Annual Symposium of the Penn State University Propulsion Engineering Research Center, pp. 9-17
  11. Christensen, E. and Nesman, T., 1998, 'Fastrac Rocket Engine Combustion Chamber Acoustic Cavities', The Tenth Annual Symposium of the Penn State University Propulsion Engineering Research Center, pp. 18-23
  12. McGough, C. B., McBride, J. M., and Hewitt, R. A., 1970, 'Acoustic Liner Feasibility Program', NASA CR-111405
  13. Park, I. S. and Sohn, C. H., 2005, 'A Numerical Study on Acoustic Behavior in Gas Turbine Combustor with Acoustic Resonator', Transactions of KSME(B), Vol. 29, No. 1, pp. 95-102 https://doi.org/10.3795/KSME-B.2005.29.1.095
  14. Kim, H. J., and Kim, S.-K., 2006, 'A Study on the Acoustic Damping Characteristics of Acoustic Cavities in a Liquid Rocket Combustor', Transactions of KSME(B), Vol. 30, No. 1, pp. 32-40 https://doi.org/10.3795/KSME-B.2006.30.1.032
  15. Morse, P. M. and Ingard, K. U., 1968, Theoretical Acoustics, 1st ed., Princeton Univ. Press
  16. Lee, B. H., 1999, Acoustics, Minum Inc.

Cited by

  1. Damping Characteristic of Helmholtz Resonator according to Its Geometry and Sound Pressure Level vol.38, pp.10, 2010, https://doi.org/10.5139/JKSAS.2010.38.10.966