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Acoustic Analysis for Design Optimization of Hub-Blade Baffle in Liquid Rocket Engine

액체로켓엔진에서 음향해석을 통한 허브-블레이드 배플 형상의 최적화

  • 김홍집 (한국항공우주연구원 엔진그룹) ;
  • 김성구 (한국항공우주연구원 엔진그룹) ;
  • 설우석 (한국항공우주연구원 엔진그룹)
  • Published : 2004.08.01

Abstract

Acoustic characteristics of combustion chamber having various baffle configurations are numerically investigated by linear acoustic analysis to suggest reliable baffle specifications in first stage of KSLV-I. To determine the configuration of baffles, an acoustic modal analysis as well as the macroscopic analysis has been done. Hub has another effect of suppressing transverse acoustic mode by confining flow in baffled compartment over general effect of increase in acoustic damping of radial acoustic modes. So, a sufficient number of hub needs to be installed to obtain acoustic damping capacity. 3-blade configuration designed to suppress the first tangential mode has relatively low damping capacity, compared to 5 or 6-blade one. Optimum value of axial baffle length has been determined by comparing acoustic characteristics of combustion chamber having various baffle lengths.

Keywords

References

  1. Harrje, D. T. and Reardon, F. H. (eds.), 1972, 'Liquid Propellant Rocket Combustion Instability,' NASA SP-194
  2. Laudien, E., Pongratz, R., Pierro, R. and Preclik, D., 1995, in Liquid Rocket Engine Combustion Instability (Yang, V. and Anderson, W. E., eds), Progress in Astronautics and Aeronautics, Vol. 169, AIAA, Washington DC, pp. 377-399
  3. Agarkov, A. F., et al., 2002, 'Studies of Acoustic Combustion Stability Characteristics Using Different Injector Configurations and Damping Devices Under Model Operating Conditions as Applied to KARI Combustion Chambers,' Report No. 512-2002-12 under Contract No. KARI-02-005
  4. Yang, V., Wicker, J. M. and Yoon, M. W., 1995, in Liquid Rocket Engine Combustion Instability (Yang, V. and Anderson, W. E., eds), Progress in Astronautics and Aeronautics, Vol. 169, AIAA, Washington DC, pp. 357-376
  5. 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 https://doi.org/10.1006/jsvi.1995.0309
  6. NASA, 1974, 'Liquid Rocket Engine Combustion Stabilization Devices,' NASA SP-8113
  7. Yoon, M. W. and Yoon, J. K., 1997, 'Combustion Instability in Liquid Rocket Engines,' Journal of the Korean Society for Aeronautical and Space Sciences, Vol. 25, No. 5, pp. 183-189
  8. Sohn, C. H., 2002, 'A Numerical Study on Acoustic Behavior in Baffled Combustion Chambers,' Transactions of the KSME(B), Vol. 26, No. 7, pp. 966-975
  9. Sohn, C. H., Kim, S. K. and Kim, Y. M., 2004, 'Effects of Various Baffie Designs on Acoustic Characteristics in Combustion Chamber of Liquid Rocket Engine,' KSME International Journal, Vol. 18, No. 1, pp. 145-152 https://doi.org/10.1007/BF03028799
  10. Kim, S. K., Sohn, C. H. and Kim, H. J., 2004, 'Acoustic Analysis of LRE Combustion Chamber with Various 5-Blade Baffles Under Non-Reacting Condition,' Journal of the Korean Society for Aeronautical and Space Sciences, Vol. 32, No. 2, pp. 74-81 https://doi.org/10.5139/JKSAS.2004.32.2.074
  11. Ko, Y. S., Lee, K. J. and Kim, H. J., 2004, 'Acoustic Tests on Atmospheric Condition in a Liquid Rocket Engine Chamber,' Transactions of the KSME(B), Vol. 28, No. 1, pp. 16-23 https://doi.org/10.3795/KSME-B.2004.28.1.016
  12. Tsuji, T., Tsuchiya, T. and Kagawa, Y., 2002, 'Finite Element and Boundary Element Modelling for the Acoustic Wave Transmission in Mean Flow Medium,' Journal of Sound and Vibration, Vol. 255, pp. 849-866 https://doi.org/10.1006/jsvi.2001.4189
  13. Kim, S. K., Kim, H. J. and Sohn, C. H., 'Development of Analysis Code for Evaluation of Acoustic Stability of Rocket Engine Combustor with Various Designs,' accepted in Journal of the Korean Society for Aeronautical and Space Sciences, Vol. 32, No. 6
  14. Saad, Y. and Schultz, M., 1986, 'GMRES: A Generalized Minimal Residual Algorithm for Solving Nonsymmetric Linear Systems,' SIAM Journal on Scientific and Statistical Computing, Vol. 7, pp. 856-869 https://doi.org/10.1137/0907058
  15. Kim, S.K., Park, T. S. and Moon, Y. W., 2003, 'Development of Chemical Equilibrium CFD Code for Performance Prediction and Optimum Design of LRE Thrust Chamber,' Proceedings of the 2003 KSPE Fall Conference, pp. 57-60