Accession Number:

ADP007960

Title:

Pitot Surveys of Two Moderately Under Expanded Jets,

Descriptive Note:

Corporate Author:

OXFORD UNIV (UNITED KINGDOM) DEPT OF ENGINEERING SCIENCE

Personal Author(s):

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.

Subject Categories:

  • Combustion and Ignition
  • Rockets

Distribution Statement:

APPROVED FOR PUBLIC RELEASE