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Hyperbolic/parabolic development for the GIM-STAR codeFlow fields in supersonic inlet configurations were computed using the eliptic GIM code on the STAR computer. Spillage flow under the lower cowl was calculated to be 33% of the incoming stream. The shock/boundary layer interaction on the upper propulsive surface was computed including separation. All shocks produced by the flow system were captured. Linearized block implicit (LBI) schemes were examined to determine their application to the GIM code. Pure explicit methods have stability limitations and fully implicit schemes are inherently inefficient; however, LBI schemes show promise as an effective compromise. A quasiparabolic version of the GIM code was developed using elastical parabolized Navier-Stokes methods combined with quasitime relaxation. This scheme is referred to as quasiparabolic although it applies equally well to hyperbolic supersonic inviscid flows. Second order windward differences are used in the marching coordinate and either explicit or linear block implicit time relaxation can be incorporated.
Document ID
19810007900
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Spradley, L. W. (Lockheed Missiles and Space Co. Huntsville, AL, United States)
Stalnaker, J. F. (Lockheed Missiles and Space Co. Huntsville, AL, United States)
Ratliff, A. W. (Lockheed Missiles and Space Co. Huntsville, AL, United States)
Date Acquired
September 4, 2013
Publication Date
December 1, 1980
Subject Category
Fluid Mechanics And Heat Transfer
Report/Patent Number
LMSC-HREC-TR-D697882
NASA-CR-3369
Accession Number
81N16416
Funding Number(s)
CONTRACT_GRANT: NAS1-15795
CONTRACT_GRANT: NAS1-15783
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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