Journal of the Korean Society for Aeronautical & Space Sciences (한국항공우주학회지)

The Korean Society for Aeronautical and Space Sciences (한국항공우주학회)
권호 표지
DOI QR코드

DOI QR Code

Study on the Passive Shock/Boundary Layer Interaction Control in Transonic Moist Air Flow

습공기 유동에서 발생하는 충격파와 경계층 간섭의 피동제어에 관한 연구

  • Published : 2002.12.01
Download PDF
⟨ Previous Next ⟩

Abstract

In the present study, a passive control method, using a porous wall and cavity system, is applied to the shock wave/boundary layer interactions in transonic moist air flow. The two-dimensional, unsteady, compressible, Navier-Stokes equations, which are fully coupled with a droplet growth equation, are solved by the third-order MUSCL type TVD finite difference scheme. Baldwin-Lomax model is employed to close the governing equations. In order to investigate the effectiveness of the present control method, the total pressure loss of the flow and the time-dependent behaviour of shock motions are analyzed in detail. The computed results show that the present passive control method considerably reduces the total pressure losses due to the shock wave/boundary layer interaction in transonic moist air flow and suppresses the unsteady shock wave motions over the airfoil as well. It is also found that the location of the porous ventilation significantly affects the control effectiveness.

본 연구는 다공벽과 공동을 사용한 피동제어법을 천음속 습공기 유동에서 발생하는 충격파와 경계층 간섭에 적응하였다. 지배방정식은 액적성장 방정식과 완전히 결합된 2차원, 비정상, 압축성 Navier-Stokes 방정식이며, 3차 오더 MUSCL 타입의 TVD 기법을 사용하였다. 또 난류모델로는 Baldwin-Lomax 모델을 적용하였다. 본 연구에서 적용한 제어법의 유용성을 조사하기 위해 유동의 전압손실과 충격파 변위의 시간의존성 거동을 해석하였다. 수치계산 결과로부터 본 연구의 피동제어기법을 통해 천음속 습공기 유동에서 발생하는 충격파/경계층 간섭으로 인한 전압손실이 상당히 감소하였고, 익에서 충격파 운동을 억제하는 것으로 나타났다. 또 다공영역의 위치가 본 연구의 제어법의 효과에 상당한 영향을 준다는 것이 발견하였다.

Keywords

References

  1. Liepmann, H. W., "The Interaction Between Boundary Layer and Shock Waves in Transonic Flow," Journal of The Aeronautical Sciences, Vol. 13, 1946, pp .623-638. https://doi.org/10.2514/8.11473
  2. Mabey, D. G., Welsh, B. L. and Cripps, B. E., "Periodic Flows over Rigid 14% Thick Biconvex Wing at Transonic Speeds," RAE TR-81059, 1981.
  3. Sugmiller, H. L., Marvin, J. G. and Levy, L. L. Jr., "Stead y and Unsteady Transonic Flow," AIAA Journal, Vol.16, No.12, 1987, pp.1262-1270. https://doi.org/10.2514/3.61042
  4. McDevitt , J. B., Levy, L. L. Jr. and Deiwert, G. S., "Transonic Flow about a Thick Circular-Arc Airfoil," AIAA Journal, Vol.14, No.12, 1978. https://doi.org/10.2514/3.61402
  5. Raghunathan, S., "Passive Control of Shock-Boundary Interaction," Prog. Aerospace Sci., Vol.25, 1988, pp.271-296. https://doi.org/10.1016/0376-0421(88)90002-4
  6. Raghunathan, S. and Mabey, D. G., "Passive Shock-Wave/ Boundary Layer Interaction," AIAA Journal, Vol.25, 1987, pp .626-638. https://doi.org/10.2514/3.9675
  7. Mabey, D. G., "Flow Unsteadiness and Model Vibration in Wind Tunnels at Subsonic and Transonic Speeds," ARC-CP-1155, 1971.
  8. Kim, H. D. and Matsuo, K., "Investigation on Shock-Induced Separation," Intl. Journal of Shock Waves, Vol.36, 1996, pp .276-285.
  9. Kim, H. D. and Matsuo, K., "Normal Shock Wave Oscillations in Supersonic Diffusers," Intl. Journal of Shock Waves, Vol.3, No.1, 1993. https://doi.org/10.1007/BF01414745
  10. Heenan, A. F. and Morrison, J. F., "Passive Control of Pressure Fluctuations Generated by Separated Flow," AIAA Journal, Vol.36, No.6, 1998, pp.1014-1022. https://doi.org/10.2514/2.474
  11. Raghunathan, S., " Passive Control of Shock/Boundary Interaction, Progress Aerospace Science, Vol.24, 1988, pp.271-296.
  12. Kim, H. D., "Reduction of Normal Shock-Wave Oscillations by Turbulent Boundary Layer Flow Suction," Journal of KSME(B), Vol.22, No.9, 1998, pp .1229-1998.
  13. McCormick, DC., "Shock/ Boundary-Layer Interaction Control with Vortex Generators and Passive Cavity,"AIAA Journal, Vol.31, No.1, 1993, pp.91-96. https://doi.org/10.2514/3.11323
  14. Matsuo, K., Miyazato, K. and Kim H. D., Shock Train and Pseudo-Shock Phenomena in Internal Gas Flows," Progress in Aerospace Sciences," Vol.35, 1999, pp.33-100. https://doi.org/10.1016/S0376-0421(98)00011-6
  15. Kim, H. D. and Matsuo, K., " Effect of Flow Bleed on Shock Wave/Boundary Layer Interaction," Journal of KSME(B), Vol.21, No.10, 1997, pp.1273-1283.
  16. Kim, H. D. and Matsuo, K., "A Passive Control on Shock Oscillation in a Supersonic Diffuser," Journal of KSME(B), Vol.20, No.3, 1996, pp.1083-1095.
  17. Delery, J. M., "Shock Wave/Turbulent Boundary Layer and Its Control," Prog. Aerospace Sci., Vol.22, 1985, pp .209-280. https://doi.org/10.1016/0376-0421(85)90001-6
  18. Schnorr, G. H., Breitling, T. and Jantzen, H. A., "Compressible Turbulent Boundary Layers with Heat Addition by Homogeneous Condensation," AIAA Journal, Vol.30, No.5, 1992, pp.1284-1289. https://doi.org/10.2514/3.11062
  19. Schnerr , G. H. and Dohrmann, U., "Drag and Lift Nonadiabatic Transonic Flow," AIAA Journal, Vol.32, 1994, pp.101-107. https://doi.org/10.2514/3.11956
  20. Kim, H. D., Kwon, S. B. and Setoguchi, T., "Passive Control of Condensation Shock Wave in Supersonic Nozzles," Journal of KSME(B), Vol.20, No.12, pp.3980-3990, 1996.
  21. Kim, H. D. and Matsuo, K., "A Passive Control on Shock Oscillation in a Supersonic Diffuser," Journal of KSME(B), Vol.20, No.3, 1996, pp.1083-1095.
  22. Kim, H. D., Setoguchi, T. and Matsuo, S. "Passive Control of Condensation Shock Wave Oscillations in a Transonic Nozzle," Journal of Sound and Vibration(to be published).
  23. Yee, H. C., "A Class of High-Resolution Explicit and Implicit Shock-Capturing Methods," NASA TM-89464, 1989.
  24. Kim, H. D., Setoguchi, T. and Matsuo, S., "Passive Control of the Condensation Shock Wave in a Transonic Nozzle," Applied Scientific Research, International Journal of the Applications of Fluid Dynamics(to be published).
  25. Kim, H. D., Setoguchi, T., Matsuo, S., Baek, S. C. and Kwon, S. B., "A CFD Study of the Self-Excited Nozzle Flows with Nonequilibrium Condensation," Proceedings of Intl. Conference of Fluid Dynamics and Propulsion, Cairo Egypt, 2001.