![]() Gardner A.D., Richter K., Effect of the model-sidewall connection for a static airfoil experiment. Ĭheng K.M., A new method to correct sidewall interference in two-dimensional wind tunnels - A local correction approach. Murthy A.V., Effects of aspect ratio and sidewall boundary-layer in airfoil testing. Green L.L., Newman P.A., Transonic wall interference assessment and adaptive wall test section1. Kemp W.B., Adcock J.B., Combined four-wall interference assessment in two-dimensional airfoil tests. NASA TTF 17–255, 1976.īarnwell R.W., Similarity rule for sidewall boundary-layer effect in two-dimensional wind tunnels. īernard-Guelle R., Influence of wind tunnel boundary-layer on two-dimensional transonic test. Wang L., Jiao Y., Gao Y., Airfoil wind tunnel correction for angles of attack from −180° to 180°. New York: John Wiley & Sons, INC., 1999.Īllen H.J., Vincenti W.G., Wall interference in a two-dimensional-flow wind tunnel, with consideration of the effect of compressibility. 1–11.īarlow J.B., Rae W.H., Pope A., Low-speed wind tunnel testing. įuglsang P., Bove S., Wind tunnel testing of airfoils involves more than just wall correction. Journal of Physics: Conference Series, 2014, 524: 12–34. Skrzypiński W., Gaunaa M., Bak C., The effect of mounting vortex generators on the DTU 10 MW reference wind turbine blade. Law S.P., Gregorek G.M., Wind tunnel evaluation of a truncated NACA 64–621 airfoil for wind turbine applications. Journal of Renewable and Sustainable Energy, 2003, 125(4): 488–496. Timmer W.A., van Rooij R.P.J.O.M., Summary of the Delft University wind turbine dedicated airfoils. Journal of Renewable and Sustainable Energy, 2014, 6(3): 1–15. Li X.X., Yang K., Zhang L., Bai J.Y., Xu J.X., Large thickness airfoils with high lift in the operating range of angle of attack. et al., Long-term research challenges in wind energy - a research agenda by the European Academy of Wind Energy. Hansen M.O.L., Aerodynamics of wind turbine. Gonçalves B.P., A revised theoretical analysis of aerodynamic optimization of horizontal-axis wind turbines based on BEM theory. Tahani M., Kavari G., Masdari M., Mirhosseini M., Aerodynamic design of horizontal axis wind turbine with innovative local linearization of chord and twist distributions. Wang H., Wu Y.D., Yue S.Y., Wang Y., Numerical investigation on the flow mechanism of multi-Peak frequency feature of rotating instability. Wang G., Zhang L., Shen W.Z., LES simulation and experimental validation of the unsteady aerodynamics of blunt wind turbine airfoils. European Conference on Computational Fluid Dynamics DLR, 2006. Shishkin A., Wagner C., Large eddy simulation of the flow around a wind turbine blade. ![]() Sedaghat A., Samani I., et al., Computational study on novel circulating aerofoils for use in Magnus wind turbine blades. Comparably, the simulation shows that the sidewall make the pressure coefficient C p decrease, and proper boundary condition can maintain two-dimensional flow at large angles of attack by eliminating the influence of corner vortices.Ĭhristian B., Frederik Z., et al., Description of the DTU 10 MW reference wind turbine. The stall phenomenon will further spread from the center line to sidewalls with the increase of the angle of attack and then, its development will be limited by the sidewall boundary layer separation. At the middle part of the testing model, the boundary layer flow evolves into three-dimensional separation, i.e., stall cell, when the separation develops to an appreciate extent. This corner separation becomes large with the increase of the angle of attack. At small angles of attack, the three-dimensional separation caused by the interaction between the sidewall boundary layer and the airfoil boundary layer is very small, and only appears near the junction of the airfoil model and the sidewall. As a result, it is clarified the flow structures on the airfoil surface depend strongly on the angles of attack and the sidewalls. Then, a numerical simulation was conducted with the measurement results. And, the oil flow visualization technique is used to investigate the flow field characteristics of the airfoil surface. Pressures acting on the airfoil surface are measured by a multiport pressure device. The test is carried out in a low-speed wind tunnel at Re=2.62×10 5. This paper presents the effect of wind tunnel sidewalls on the wind turbine airfoils with experimental and numerical methods. ![]()
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