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Accession Number:
ADP007960
Title:
Pitot Surveys of Two Moderately Under Expanded Jets,
Descriptive Note:
Corporate Author:
OXFORD UNIV (UNITED KINGDOM) DEPT OF ENGINEERING SCIENCE
Report Date:
1990-12-01
Pagination or Media Count:
15.0
Abstract:
In the free expansion of the exhaust gases of engines flying at altitudes suitable for air-breathing launchers, the turbulent shear layers interact with the jet shock structure, posing a challenge for CFD. A series of experiments in this flow regime is performed to provide data suitable for code validation. Angular and axial Pitot surveys of heated, high pressure, nitrogen jets exhausted from a Mach 3 conical nozzle into a low pressure tank are presented. The results indicate that there is strong turbulent mixing throughout the flowfield downstream of the first Mach disk in addition to a repetitive shock cell structure.
Distribution Statement:
APPROVED FOR PUBLIC RELEASE