CFD analysis of 2D and 3D airfoils using open source solver SU2

VAITHIYANATHASAMY, R. (2017) CFD analysis of 2D and 3D airfoils using open source solver SU2.

Abstract:The open source computational fluid dynamics (CFD) software SU2 is developed for compressible flows, equipped with approximations like pre-conditioning and artifi�cial compressibility for incompressible flows. Wind turbines operate at very low velocity and is a good example of incompressible flows. The performance of SU2 at these low Mach number flows is analysed with two airfoils FFAW3301 and DU97W300. The results are compared with Rfoil, Xfoil and experiment. Xfoil and Rfoil are engineering models for aerodynamic design of airfoils. The results from SU2 analysis shows that the lift coeffcient is over predicted in the linear region of non-separated flow and the over prediction increases to about 30% in the stalled region. Concurrently, the drag coefficient is under predicted in the linear region and the under prediction increases in the stalled region of flow. The separation point is predicted at a later position in the suction side of the airfoil compared to Rfoil but gives better prediction than Xfoil. Also the wall spacing for y+ = 1 calculated theoretically does not yield accurate results and need to be reduced to less than half of the value to get better prediction. Further, the boundary layer thickness estimated from SU2 is smaller for all angle of attacks than Rfoil and Xfoil for similar cases.
Item Type:Internship Report (Master)
Energieonderzoek Centrum Nederland, the Netherlands
Faculty:ET: Engineering Technology
Subject:52 mechanical engineering
Programme:Sustainable Energy Technology MSc (60443)
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