Journal of computational fluids engineering (한국전산유체공학회지)

Korean Society of Computational Fluids Engineering (한국전산유체공학회)
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ROTATING FLOW ANALYSIS AROUND A HAWT ROTOR BLADE USING RANS EQUATIONS

RANS 방정식을 이용한 HAWT 로터 블레이드의 회전 유동장 해석

  • 김태승 (한국자동차부품기술연구소) ;
  • 이철 (울산대학교 항공우주공학과) ;
  • 손창호 (울산대학교 기계자동차공학부) ;
  • 조창열 (울산대학교 항공우주공학과)
  • Published : 2008.06.30
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Abstract

The Reynolds-Averaged Navier-Stokes(RANS) analysis of the 3-D steady flow around the NREL Phase VI horizontal axis wind turbine(HAWT) rotor was performed. The CFD analysis results were compared with experimental data at several different wind speeds. The present CFD model shows good agreements with the experiments both at low wind speed which formed well-attache flow mostly on the upper surface of the blade, and at high wind speed which blade surface flow completely separated. However, some discrepancy occurs at the relatively high wind speeds where mixed attached and separated flow formed on the suction surface of the blade. It seems that the discrepancy is related to the onset of stall phenomena and consequently separation prediction capability of the current turbulence model. It is also found that strong span-wise flow occurs in stalled area due to the centrifugal force generated by rotation of the turbine rotor and it prevents abrupt reduction of normal force for higher wind speed than the designed value.

Keywords

References

  1. 1915, Lanchester, F.W., "A Contribution to the Theory of Propulsion and the Screw Propeller," Trans. Inst. Naval Archi., pp.57-98
  2. 1963, Glauert, H., "Airplane Propellers," Aerodynamic Theory, Vol.IV, Division edited by W. F. Durand, Dover Publication
  3. 2001, Sorensen, N.N., Michlesen, J.A. and Schreck, S., "Detailed Aerodynamic Prediction of the NREL/NASA Ames Wind Tunnel Tests Using CFD," EWEC, Copenhagen, pp.48-53
  4. 2001, Hand, M.M., Simms, D.A., Fingersh, L.J., Jager, D.W., Cotrell, J.R., Schreck, S. and Larwood, S.M., "Unsteady Aerodynamics Experiment Phase VI: Wind Tunnel Test Configuration and Available Data Campaigns," NREL/TP-500-29955, NREL
  5. 2002, Sorensen, N.N., Michelsen, J.A. and Schreck, S., "Navier-Stokes Predictions of the NREL Phase VI Rotor in the NASA Ames 80ft ${\times}$ 120ft Wind Tunnel," Wind Energy, Vol.5, pp.151-169 https://doi.org/10.1002/we.64
  6. 2002, Schreck, S. and Robinson, M., "Rotational Augmentation of Horizontal Axis Wind Turbine Blade Aerodynamics Response," Wind Energy, Vol.5, pp.133-150 https://doi.org/10.1002/we.68
  7. 2003, Vermeer, L.J., Sorensen, J.N. and Crespo, A., "Wind Turbine Wake Aerodynamics," Progress in Aerospace Sciences, Vol.39, Elsevier Ltd., pp.467-510
  8. 2005, 김정환, 김태식, 이연원, 김영덕, "CFD에 의한 수평축 풍력터빈의 공력해석에 관한 연구," 한국풍공학회지, 제9권, 제1호, pp.103-108
  9. 2003, FLUENT User`s Guide, FLUENT Inc.
  10. 1972, Patankar, S.V. and Spalding, D.B., "A Calculation Procedure for Heat, Mass and Momentum Transfer in Three-dimensional Parabolic Flows," International Journal of Heat and Mass Transfer, Vol.15, pp.1787-1806 https://doi.org/10.1016/0017-9310(72)90054-3
  11. 1983, Rhie, C.M. and Chow, W.L., "Numerical Study of the Turbulent Flow Past an Airfoil with Trailing Edge Separation," AIAA Journal, Vol.21, No.11, pp.1525-1532 https://doi.org/10.2514/3.8284
  12. 1993, Menter, F.R., "Zonal Two Equation ${\kappa}-{\omega}$ Turbulence Models for Aerodynamics Flows," AIAA-93-2906