Published in 48th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition, January 4, 2010, pages 1-19.
Copyright © 2010 Jay Marcos and David D. Marshall. The original paper was published by American Institute of Aeronautics and Astronautics, Inc.. The definitive version is available at http://www.aiaa.org/agenda.cfm?lumeetingid=1812.
This paper demonstrates the use of CFD as a validation tool for wind tunnel data on 2D high lift airfoil with a 3D engine performed by Georgia Tech Research Institute. Results of this validation will assist in determining the appropriate turbulence models, boundary conditions, mesh characteristics and other CFD modeling techniques necessary to capture the complicated flow physics associated with the coupling of circulation control wings and engine exhaust flows. It was found that grid issues and the two-equation turbulence model, k-ε, over predicted lift as blowing momentum increases even with the additional complexity of having an over the wing engine. The detailed techniques utilized to most accurately capture the flow properties, including lift forces and flow field characteristics, are provided and discussed.