Linear stability of three-dimensional boundary layers - Effects of curvature and non-parallelismIn this paper we study the effect of in-plane (wavefront) curvature on the stability of three-dimensional boundary layers. It is found that this effect is stabilizing or destabilizing depending upon the sign of the crossflow velocity profile. We also investigate the effects of surface curvature and nonparallelism on crossflow instability. Computations performed for an infinite-swept cylinder show that while convex curvature stabilizes the three-dimensional boundary layer, nonparallelism is, in general, destabilizing and the net effect of the two depends upon meanflow and disturbance parameters. It is also found that concave surface curvature further destabilizes the crossflow instability.
Document ID
19930036194
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Malik, M. R. (NASA Langley Research Center Hampton, VA, United States)
Balakumar, P. (High Technology Corp. Hampton, VA, United States)
Date Acquired
August 15, 2013
Publication Date
January 1, 1993
Subject Category
Aerodynamics
Report/Patent Number
AIAA PAPER 93-0079
Meeting Information
Meeting: AIAA, Aerospace Sciences Meeting and Exhibit