DMD and POD of time-resolved schlieren on a multi-stream single expansion ramp nozzle

Matthew G. Berry, Mohd Y. Ali, Andrew S. Magstadt, Mark N Glauser

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Time-resolved schlieren measurements were conducted on a supersonic rectangular multi-stream nozzle used for three-stream engines. The jet utilizes a single expansion ramp nozzle (SERN) configuration along with an bypass stream, operating at an ideally expanded bulk flow of Mj,1=1.6 and bypass stream of Mj,3=1.0. Experiments were conducted with and without an aft deck to model airframe integration. Schlieren imaging was acquired up to 100 kHz in two different orientations. Proper orthogonal decomposition (POD) and dynamic mode decomposition (DMD) were applied to the schlieren data to identify flow structures. Comparisons were made between the two decomposition methods in the form of spatial correlations.

Original languageEnglish (US)
Pages (from-to)60-69
Number of pages10
JournalInternational Journal of Heat and Fluid Flow
Volume66
DOIs
StatePublished - Aug 1 2017

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ramps
nozzles
Nozzles
Decomposition
decomposition
expansion
bypasses
Plant expansion
Airframes
Flow structure
airframes
Engines
engines
Imaging techniques
configurations
Experiments

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes

Cite this

DMD and POD of time-resolved schlieren on a multi-stream single expansion ramp nozzle. / Berry, Matthew G.; Ali, Mohd Y.; Magstadt, Andrew S.; Glauser, Mark N.

In: International Journal of Heat and Fluid Flow, Vol. 66, 01.08.2017, p. 60-69.

Research output: Contribution to journalArticle

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