Affiliation:
1. School of Aerospace Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0150
Abstract
The aerodynamic performance of the National Renewable Energy Laboratory (NREL) Phase VI horizontal axis wind turbine (HAWT) under yawed flow conditions is studied using a three-dimensional unsteady viscous flow analysis. Simulations have been performed for upwind cases at several wind speeds and yaw angles. Results presented include radial distribution of the normal and tangential forces, shaft torque, root flap moment, and surface pressure distributions at selected radial locations. The results are compared with the experimental data for the NREL Phase VI rotor. At low wind speeds (∼7m∕s) where the flow is fully attached, even an algebraic turbulence model based simulation gives good agreement with measurements. When the flow is massively separated (wind speed of 20m∕s or above), many of the computed quantities become insensitive to turbulence and transition model effects, and the calculations show overall agreement with experiments. When the flow is partially separated at wind speed above 15m∕s, encouraging results were obtained with a combination of the Spalart-Allmaras turbulence model and Eppler’s transition model only at high enough wind speeds.
Subject
Energy Engineering and Power Technology,Renewable Energy, Sustainability and the Environment
Reference17 articles.
1. Duque, E. P. N., van Dam, C. P., and Hughes, S., 1999, “Navier-Stokes Simulations of the NREL Combined Experiment Phase II Rotor,” AIAA Pap.0146-3705 99-0037.
2. Sorensen, N. N., and Hansen, M. O. L., “1998, Rotor Performance Predictions using a Navier-Stokes Method,” AIAA Pap.0146-3705 98-0025.
3. Sorensen, N. N., and Michelsen, J. A., 2000, “Aerodynamic Predictions for the Unsteady Aerodynamics Experiment Phase-II Rotor at the National Renewable Energy Laboratory,” AIAA Pap.0146-3705 2000-0037.
4. Sorensen, N. N., Michelsen, J. A., and Schreck, S., 2002, “Prediction of the NREL/NASA Ames Wind Tunnel Test,” AIAA Pap.0146-3705 2002-0031.
5. Xu, G., and Sankar, L. N., 2000, “Effects of Transition, Turbulence and Yaw on the Performance of Horizontal Axis Wind Turbines,” AIAA Pap.0146-3705 2000-0048.
Cited by
56 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献