Vortex/surface interactionThis paper considers the interaction of a vortex generated upstream in a flow field with a downstream aerodynamic surface that possesses a large chord. The flow is assumed to be steady, incompressible, inviscid and irrotational, and the surface to be semiinfinite. The vortex is considered to be a straight vortex filament. To lowest order the problem is modeled using potential theory, where the 3D Laplace's equation for the velocity potential on the surface is solved exactly. The closed-form equation for pressure distribution obtained from this theory is found to have a square root singularity at the leading-edge. It also converges, as x goes to infinity, to the solution of the 2D point-vortex/infinite plane problem. The pressure coefficient presents an anti-symmetric behavior, near the leading-edge and a symmetric behavior as x goes to infinity.
Document ID
19930040928
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Bodstein, G. C. R. (NASA Langley Research Center Hampton, VA, United States)
George, A. R. (NASA Langley Research Center Hampton, VA, United States)
Hui, C. Y. (Cornell Univ. Ithaca, NY, United States)
Date Acquired
August 16, 2013
Publication Date
January 1, 1993
Subject Category
Aerodynamics
Report/Patent Number
AIAA PAPER 93-0863
Meeting Information
Meeting: AIAA, Aerospace Sciences Meeting and Exhibit