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Numerical Predictions of Rotor Performance using aNavier-Stokes Simulationcoupled with a Time-Marching Free-Wake Model

  • Chung, Ki-Hoon (Rotorcraft Department, Rotorcraft Development Division,Korea Aerospace Research Institute) ;
  • Yee, Kwan-Jung (Rotorcraft Department, Rotorcraft Development Division,Korea Aerospace Research Institute) ;
  • Hwang, Chang-Jeon (Rotorcraft Department, Rotorcraft Development Division,Korea Aerospace Research Institute) ;
  • Lee, Duck-Joo (Division of Aerospace Engineering,Korea Advanced Institute of Science of Technology)
  • Published : 2004.12.31

Abstract

CFD method has been coupled with a time-marching free-wake model by usingfield velocity approach suggested by J. D. Baeder (Ref. 1). The coupled method hasbeen applied to rectangular and BERP-like blades and the calculated perfonnance dataare compared with the experimental results.For hovering analysis, the present method could yield sufficiently good resultswith reasonable computation time and is particularly suitable for the flow fieldanalysis with the complex shaped blade.

Keywords

References

  1. Harsh Khanna and James D. Baeder, 'Coupled Free-Wake/CFD Solutions for Rotors in Hover Using a Field Velocity Approach', 52nd Annual Forum of AHS, Washington D. C., June 4-6, 1996
  2. Chee Tung and Soogab Lee, Evaluation of Hovering Performance Prediction Codes', 50thAnnual Forum of AHS, Washington D.C., May 11-13, 1994
  3. Ryu, K. W. and Lee, D. J., 'Sound radiation from elliptic vortex rings: evolution and interaction', Journal of sound and vibration, Vol. 200, pp. 281-301, 1997 https://doi.org/10.1006/jsvi.1996.0693
  4. Na, S. U. and Lee, D. J., 'Numerical Simulations of Wake Structure Generated by Rotating Blades Using a Time-Marching Free-Vortex-Blob Method', European Joumal of Mechanics, 18, (1), pp. 147-159, 1999 https://doi.org/10.1016/S0997-7546(99)80011-9
  5. Caradonna, F. X. and Tung, C., 'Experimental and Analytical Studies of a Model Helicopter Rotor in Hover', NASA TM 81232 , September, 1981
  6. Leishman, J. G., Baker, A., Coyne, A., 'Measurements of Rotor Tip vortices Using Three-Component Laser Doppler Velocimetry', J. American Helicopter Society, 41, (4), Oct., pp. 342-353, 1996 https://doi.org/10.4050/JAHS.41.342
  7. Caradonna, F., Hendley, E., Silva, M., Huang, S., Komerath, N., Reddy, U., Mahalingam, R., Funk, R., Ames R., Darden, L., Villareal, L., Gregory, and Wong, O., 'An Experimental Studyof a Rotor In Axial Flight', AHS Specialists' Meeting on Aerodynamics and Aeroacoustics, Williamsburg, VA, Oct, 1997
  8. Chung, K. H., Na, S. U., Jeon, W. H., Lee, J., 'A Study on Rotor Tip-Vortex Pairing Phenomena by using Time-Marching Free-Wake Method', American Helicopter Society 56th Annual Forum, Virginia Beach, Virginia, May 2-4, D. 2000
  9. Kocurek, J. D. and Tangler, J. L., 'A Prescribed Wake Lifting Surface Hover Performance Analysis', American Helicopter Society 32nd Annual Forum, May, 1976
  10. Beddoes, T. S., 'A Wake Model For High Resolution Airloads', the 2nd International Conference on Basic Rotorcraft Research, Triangle Park, NC, 1985