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Boundary layer simulator (BLIMPJ) improvementImprovements were made to advance the current Boundary Layer Integral Matrix Procedure - Version J (BLIMPJ) containing previously modeled simplified calculation methods accounting for surface roughness, relaminarization, and thick boundary layer effects. These improvements have potential applications in the design of the future Orbit Transfer Vehicles (OTV) engines. The coded wall roughness module was validated successfully against measured data from the LeRC 60-15 degree half-angle conical nozzle. The relaminarization model was modified to include wall cooling and roughness based on a set of test data from the same nozzle. The model was compared against typical data sets for validation in different flow regimes. The thrust loss calculation for thick boundary layer effects was computerized where the iterations between TDK and BLIMPJ proceeded automatically until convergence was achieved. An example is given for a typical OTV nozzle with an area ratio 1293.
Document ID
19880016198
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Praharaj, S. C.
(Remtech, Inc. Huntsville, AL, United States)
Schmitz, C. P.
(Remtech, Inc. Huntsville, AL, United States)
Date Acquired
August 13, 2013
Publication Date
October 1, 1987
Publication Information
Publication: Johns Hopkins Univ., The 24th JANNAF Combustion Meeting, Volume 2
Subject Category
Fluid Mechanics And Heat Transfer
Accession Number
88N25582
Funding Number(s)
CONTRACT_GRANT: NAS8-36551
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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