Theoretical modeling of leading edge vortices using the leading edge suction parameter

Ramesh, K. , Gopalarathnam, A., Granlund, K., Ol, M. V. and Edwards, J. R. (2012) Theoretical modeling of leading edge vortices using the leading edge suction parameter. In: 30th AIAA Applied Aerodynamics Conference, New Orleans, LA, USA, 25-28 Jun 2012, (doi:10.2514/6.2012-3027)

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Publisher's URL: http://arc.aiaa.org/doi/abs/10.2514/6.2012-3027

Abstract

A theoretical low-order model to predict the forces and flow evolution on airfoils and flat plates undergoing arbitrary 2D unsteady maneuvers is presented. An inviscid airfoil theory with discrete vortex shedding from the trailing edge is augmented with a Leading Edge Suction Parameter (LESP), which is a criterion to predict leading edge separation. The LESP is used to mediate intermittent discrete vortex shedding from the leading edge. This model is validated against CFD and experiment for motions in recent unsteady airfoil literature. In addition, the influences of leading and trailing edge vortices on the force histories are studied in detail by examining the various constituents of forces on the airfoil from theory. Overall, the model is seen to be successful in predicting forces and flow evolution for unsteady motions.

Item Type:Conference Proceedings
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Ramesh, Dr Kiran
Authors: Ramesh, K., Gopalarathnam, A., Granlund, K., Ol, M. V., and Edwards, J. R.
College/School:College of Science and Engineering > School of Engineering > Aerospace Sciences

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
UNSPECIFIED9550Theoretical, Computational, and Experimental Studies of the Aerodynamics of Perching FlightDr. Ashok GopalarathnamAFOSRUNSPECIFIEDUNSPECIFIED