Three-dimensional mean flow experimental study of 'vortex unwinding'A seven-hole flow-angularity pressure probe was used to assess the effectiveness of vortex unwinding in a turbulent boundary layer. The vortex center moved in the spanwise and vertical direction with increasing longitudinal distance. Initially, the vortex moved rapidly; it achieved 60 percent of its total 41 mm spanwise travel before it had completed half of its travel in the longitudinal direction. The flow was studied behind the single vortex combined with the most successful unwinder. The unwinder was found to be very effective in reducing the amount of secondary flow in the boundary layer.
Document ID
19880061590
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Mcginley, Catherine B. (NASA Langley Research Center Hampton, VA, United States)
Date Acquired
August 13, 2013
Publication Date
January 1, 1988
Subject Category
Fluid Mechanics And Heat Transfer
Report/Patent Number
AIAA PAPER 88-3658
Meeting Information
Meeting: AIAA, ASME, SIAM, and APS, National Fluid Dynamics Congress