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Boundary layer simulator improvementBoundary Layer Integral Matrix Procedure (BLIMPJ) has been identified by the propulsion community as the rigorous boundary layer program in connection with the existing JANNAF reference programs. The improvements made to BLIMPJ and described herein have potential applications in the design of the future Orbit Transfer Vehicle engines. The turbulence model is validated to include the effects of wall roughness and a way is devised to treat multiple smooth-rough surfaces. A prediction of relaminarization regions is examined as is the combined effects of wall cooling and surface roughness on relaminarization. A turbulence model to represent the effects of constant condensed phase loading is given. A procedure is described for thrust decrement calculation in thick boundary layers by coupling the T-D Kinetics Program and BLIMPJ and a way is provided for thrust loss optimization. Potential experimental studies in rocket nozzles are identified along with the required instrumentation to provide accurate measurements in support of the presented new analytical models.
Document ID
19910014899
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Praharaj, Sarat C.
(Remtech, Inc. Huntsville, AL, United States)
Schmitz, Craig P.
(Remtech, Inc. Huntsville, AL, United States)
Nouri, Joseph A.
(Remtech, Inc. Huntsville, AL, United States)
Date Acquired
September 6, 2013
Publication Date
March 31, 1989
Subject Category
Research And Support Facilities (Air)
Report/Patent Number
NAS 1.26:183660
RTR-161-01
NASA-CR-183660
Accession Number
91N24212
Funding Number(s)
CONTRACT_GRANT: NAS8-36551
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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