Interferometry and computational studies of an oscillating airfoil compressible dynamic stall flow fieldA unique comparison has been made between real time interferograms and full Navier-Stokes computations of the density field over an oscillating airfoil undergoing dynamic stall for compressible flow conditions. Good agreement was found until a dynamic stall vortex formed in the flow. Subsequent evolution of the flow field was found to be very different in the computations. The reasons for this difference have been explained in terms of the leading edge region flow physics and the refined flow modeling that needs to be used for the post-stall flow field.
Document ID
19950028583
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Chandrasekhara, M. S. (Naval Postgraduate School, Monterey, CA United States)
Carr, L. W. (NASA Ames Research Center Moffett Field, CA, United States)
Ekaterinaris, J. A. (Naval Postgraduate School, Monterey, CA United States)