Vortex cloud model for body vortex shedding and trackingThe present engineering prediction method addresses the aerodynamic characteristics and associated flowfields of circular and noncircular bodies at large incidence angles and arbitrary roll angles. 3D attached-flow models are used to represent the body, and 2D, incompressible, separated flow models are used to represent the separated vortex wake. The predicted pressure distribution of the body, under the influence of both the freestream and the separation vortex wake, is used to calculate aerodynamic loads. The separation vortex wake is represented by clouds of discrete vortices in crossflow planes normal to the body axis.
Document ID
19920057083
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Mendenhall, Michael R. (NASA Langley Research Center Hampton, VA, United States)
Perkins, Stanley C., Jr (NASA Langley Research Center Hampton, VA, United States)
Lesieutre, Daniel J. (Nielsen Engineering and Research, Inc. Mountain View, CA, United States)