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Comparison of secondary flows predicted by a viscous code and an inviscid code with experimental data for a turning ductA comparison of the secondary flows computed by the viscous Kreskovsky-Briley-McDonald code and the inviscid Denton code with benchmark experimental data for turning duct is presented. The viscous code is a fully parabolized space-marching Navier-Stokes solver while the inviscid code is a time-marching Euler solver. The experimental data were collected by Taylor, Whitelaw, and Yianneskis with a laser Doppler velocimeter system in a 90 deg turning duct of square cross-section. The agreement between the viscous and inviscid computations was generally very good for the streamwise primary velocity and the radial secondary velocity, except at the walls, where slip conditions were specified for the inviscid code. The agreement between both the computations and the experimental data was not as close, especially at the 60.0 deg and 77.5 deg angular positions within the duct. This disagreement was attributed to incomplete modeling of the vortex development near the suction surface.
Document ID
19850029483
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Schwab, J. R.
(NASA Lewis Research Center Cleveland, OH, United States)
Povinelli, L. A.
(NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
August 12, 2013
Publication Date
January 1, 1983
Subject Category
Fluid Mechanics And Heat Transfer
Meeting Information
Meeting: Computation of internal flows: Methods and applications
Location: New Orleans, LA
Start Date: February 12, 1984
End Date: February 16, 1984
Accession Number
85A11634
Distribution Limits
Public
Copyright
Other

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