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A numerical investigation of supersonic strut/endwall interactions in annular flow with varying strut thicknessA full 3D Navier-Stokes numerical investigation has been conducted of the shock-wave/boundary-layer flow interactions caused by four diamond-shaped struts, of varying thickness, in an annular duct with Mach 3 core flow and turbulent boundary-layers on both walls. Secondary flows caused by weak-to-strong interactions are examined in the vicinity of a strut which is bounded by curved endwalls. The duct endwall boundary-layer separated for the strongest interaction. The struts studied had maximum thickness-to-chord ratios of 0.125, 0.188, 0.250, and 0.500. The duct gap height is 0.7 strut chords, the duct inner-to-outer wall radius ratio is 0.7, and the Reynolds number is 3 x 10 exp 5 based on the strut chord length which was held constant for all interactions considered. The effects of strut thickness on the secondary flows are discussed, including: trajectories for the leading and trailing edge horseshoe vortices, strut/endwall corner vortices, and boundary-layer separation. The line of coalescence discussed in the literature, previously ascribed to boundary-layer separation, is shown to be caused by the leading edge horseshoe vortex convecting along the shock front.
Document ID
19930064131
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Williams, K. E.
(Washington Univ. Seattle, United States)
Harloff, G. J.
(Sverdrup Technology, Inc. Brook Park, OH, United States)
Gessner, F. B.
(Washington Univ. Seattle, United States)
Date Acquired
August 16, 2013
Publication Date
July 1, 1993
Subject Category
Aerodynamics
Report/Patent Number
AIAA PAPER 93-2927
Meeting Information
Meeting: AIAA, Fluid Dynamics Conference
Location: Orlando, FL
Country: United States
Start Date: July 6, 1993
End Date: July 9, 1993
Sponsors: AIAA
Accession Number
93A48128
Funding Number(s)
CONTRACT_GRANT: NAG3-376
CONTRACT_GRANT: NAS3-25266
Distribution Limits
Public
Copyright
Other

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