Simulation of aerodynamic performance affected by vortex generators on blunt trailing-edge airfoils
Source abstract
Abstract
An investigation was carried out by numerical simulation on a wind turbine airfoil and a blunt trailing-edge airfoil with and without vortex generators (VGs), and the performance of the airfoils was analyzed. By the simulation of airfoil DU 91-W2-250 it was verified that the numerical method and model were credible. Based on this airfoil, a new one with a blunt trailing edge of 6% chord was blended by symmetrically adding thickness, and its characteristics curves were obtained through computing at key angles of attack. Additionally, the pressure distribution on blended airfoil was analyzed by comparing to the airfoil without blend. The interaction of streamwise vortices induced by VGs with trailing vortex or separation vortex was considered, followed by the uncovery of how VGs can suppress the boundary layer separation.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Wind Energy Research and Development · Aerodynamics and Fluid Dynamics Research · Wind and Air Flow Studies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (12)
Show source-provided references
1. SAND. Innovative Design Approaches for Large Wind Turbine Blades, Final Report. In: SAND 2004-0074. Albuquerque: TPI Composites, Inc., 2004
2. Michael R D A. The Effects of Trailing Edge Bluntness on Airfoil Performance As Calculated Approximately by a Viscid-inviscid Vortex Panel Method. New Hampshire: Massachusetts Institute of Technology, 1988
3. Standish K J, van Dam C P. Aerodynamic analysis of blunt trailing edge airfoils. J Sol Energ-T ASME, 2003, 125(4): 479–48710.1115/1.1629103 ↗
4. Baker J P, Mayda E A, van Dam C P. Experimental analysis of thick blunt trailing-edge wind turbine airfoils. J Sol Energ-T ASME, 2006, 128(4): 422–43110.1115/1.2346701 ↗
5. Christopher P S, Stephanie M T, Earl P N D. Computational fluid dynamics of flatback airfoils for wind turbine applications. AIAA 2006-194, 2006
6. Nickerson J D, Jr. A study of vortex generators at low Reynolds numbers. AIAA-1986-0155, 198610.2514/6.1986-155 ↗
7. Jeppe J, Niels N S, Mads R, et al. Rotor Blade Computations With 3D Vortex Generators. Risø-R-1486(EN). 2005
8. Liu G, Liu W, Mou B, et al. Study on Numrical Calculation of Vortex Generaters (in Chinese). J Aerospace Power, 2007, 25(2): 241–244
9. Timmer W A, van Rooij R P J O M. Summery of the Delft University wind turbine dedicated airfoils. AIAA-2003-0352, 200310.1115/WIND2003-352 ↗
10. Zhang L, Yang K, Xu J Z, et al. Aerodynamic influence of different trailing-edge changing methods to the blunt trailing-edge airfoil (in Chinese). J Eng Thermophys, 2009, 30(5): 773–776
11. Ye Y P. Mechanism and design of vortex generators (in Chiness). Xi Fei Tech, 1995, 2: 2–5
12. Clara M V, Martin Otto Lavér Hansen, Meyer Knud Erik, et al. Evaluation of the performance of vortex generators on the DU 91-W2-250 profile using stereoscopic PIV. In: EIC2008. Orlando: IEIC, 2008 doi: 10.1007/s11431-010-0027-2