NDLI: Implicit les of turbulent, separated flow: wall-mounted hump configuration

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Implicit les of turbulent, separated flow: wall-mounted hump configuration

Content Provider	NASA Technical Reports Server (NTRS)
Author	Caubilla, David Higuera Sekhar, Susheel Mansour, Nagi N.
Copyright Year	2015
Description	Direct simulations (ILES) of turbulent, separated flow over the wall-mounted hump configuration is conducted to investigate the physics of separated flows. A chord-based Reynolds number of Re(sub c) = 47,500 is set up, with a turbulent in flow of Re(sub theta) = 1,400 (theta/c = 3%). FDL3DI, a code that solves the compressible Navier-Stokes equations using high- order compact-difference scheme and filter, with the standard recycling/rescaling method of turbulence generation, is used. Two different configurations of the upper-wall are analyzed, and results are compared with both a higher Re(sub c) (= 936,000, Re(sub theta) = 7,200, theta/c = 0.77%) experiment for major flow features, and RANS (k-omega SST) results. A lower Rec allows for DNS-like mesh resolution, and an adequately wide span. Both ILES and RANS show delayed reattachment compared to experiment, and significantly higher skin friction in the forebody of the hump, as expected. The upper-wall shape influences the C(sub p) distribution only. Results from this study are being used to setup higher Rec (lower theta/c) ILES.
File Size	1895270
Page Count	14
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_20160002246
Archival Resource Key	ark:/13960/t2z36tj89
Language	English
Publisher Date	2015-01-05
Access Restriction	Open
Subject Keyword	Implicit Les Separated Flow Turbulent Wall-mounted Hump Navier-stokes Equation Turbulence Turbulent Flow Direct Numerical Simulation Computational Fluid Dynamics Reynolds Number K-omega Turbulence Model Shapes Walls Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Article

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