NDLI: Cfd validation studies for hypersonic flow prediction

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Cfd validation studies for hypersonic flow prediction

Content Provider	NASA Technical Reports Server (NTRS)
Author	Gnoffo, Peter A.
Copyright Year	2001
Description	A series of experiments to measure pressure and heating for code validation involving hypersonic, laminar, separated flows was conducted at the Calspan-University at Buffalo Research Center (CUBRC) in the Large Energy National Shock (LENS) tunnel. The experimental data serves as a focus for a code validation session but are not available to the authors until the conclusion of this session. The first set of experiments considered here involve Mach 9.5 and Mach 11.3 N2 flow over a hollow cylinder-flare with 30 degree flare angle at several Reynolds numbers sustaining laminar, separated flow. Truncated and extended flare configurations are considered. The second set of experiments, at similar conditions, involves flow over a sharp, double cone with fore-cone angle of 25 degrees and aft-cone angle of 55 degrees. Both sets of experiments involve 30 degree compressions. Location of the separation point in the numerical simulation is extremely sensitive to the level of grid refinement in the numerical predictions. The numerical simulations also show a significant influence of Reynolds number on extent of separation. Flow unsteadiness was easily introduced into the double cone simulations using aggressive relaxation parameters that normally promote convergence.
File Size	922793
Page Count	16
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_20010020436
Archival Resource Key	ark:/13960/t7kq2z932
Language	English
Publisher Date	2001-01-01
Access Restriction	Open
Subject Keyword	Fluid Mechanics And Thermodynamics Computational Fluid Dynamics Reynolds Number Pressure Distribution Hypersonic Flow Computerized Simulation Hypersonic Speed Numerical Analysis Cylindrical Bodies Computational Grids Three Dimensional Models Aerothermodynamics Mach Number Shock Tunnels 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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