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Fully-coupled analysis of jet mixing problems. Part 1. Shock-capturing model, SCIPVISA computational model, SCIPVIS, is described which predicts the multiple cell shock structure in imperfectly expanded, turbulent, axisymmetric jets. The model spatially integrates the parabolized Navier-Stokes jet mixing equations using a shock-capturing approach in supersonic flow regions and a pressure-split approximation in subsonic flow regions. The regions are coupled using a viscous-characteristic procedure. Turbulence processes are represented via the solution of compressibility-corrected two-equation turbulence models. The formation of Mach discs in the jet and the interactive analysis of the wake-like mixing process occurring behind Mach discs is handled in a rigorous manner. Calculations are presented exhibiting the fundamental interactive processes occurring in supersonic jets and the model is assessed via comparisons with detailed laboratory data for a variety of under- and overexpanded jets.
Document ID
19840007357
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Dash, S. M. (Science Applications, Inc. Princeton, NJ, United States)
Wolf, D. E. (Science Applications, Inc. Princeton, NJ, United States)
Date Acquired
September 4, 2013
Publication Date
January 1, 1984
Subject Category
Fluid Mechanics And Heat Transfer
Report/Patent Number
NAS 1.26:3761
NASA-CR-3761
SAI/PR-TR-13
Accession Number
84N15425
Funding Number(s)
CONTRACT_GRANT: NAS1-16535
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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