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Progress in Validation of Wind-US for Ramjet/Scramjet CombustionValidation of the Wind-US flow solver against two sets of experimental data involving high-speed combustion is attempted. First, the well-known Burrows- Kurkov supersonic hydrogen-air combustion test case is simulated, and the sensitively of ignition location and combustion performance to key parameters is explored. Second, a numerical model is developed for simulation of an X-43B candidate, full-scale, JP-7-fueled, internal flowpath operating in ramjet mode. Numerical results using an ethylene-air chemical kinetics model are directly compared against previously existing pressure-distribution data along the entire flowpath, obtained in direct-connect testing conducted at NASA Langley Research Center. Comparison to derived quantities such as burn efficiency and thermal throat location are also made. Reasonable to excellent agreement with experimental data is demonstrated for key parameters in both simulation efforts. Additional Wind-US feature needed to improve simulation efforts are described herein, including maintaining stagnation conditions at inflow boundaries for multi-species flow. An open issue regarding the sensitivity of isolator unstart to key model parameters is briefly discussed.
Document ID
20050182663
Acquisition Source
Glenn Research Center
Document Type
Preprint (Draft being sent to journal)
Authors
Engblom, William A. (Aerospace Corp. Cleveland, OH, United States)
Frate, Franco C. (QSS Group, Inc. Cleveland, OH, United States)
Nelson, Chris C. (Innovative Technology Applications Co. Seattle, WA, United States)
Date Acquired
September 7, 2013
Publication Date
January 1, 2005
Subject Category
Aircraft Propulsion And Power
Report/Patent Number
E-15085
AIAA Paper 2005-1000
Meeting Information
Meeting: 43rd AIAA Aerospace Sciences Meeting and Exhibit
Location: Reno, NV
Country: United States
Start Date: January 10, 2005
End Date: January 13, 2005
Sponsors: American Inst. of Aeronautics and Astronautics
Funding Number(s)
CONTRACT_GRANT: ATA-05-20
CONTRACT_GRANT: ATA-04-069
WBS: WBS 22-781-30-70
CONTRACT_GRANT: NASA Order C-31035-T
CONTRACT_GRANT: NAS3-00145
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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