Large structure convection velocity measurements in compressible transverse injection flowfields

M. R. Gruber, A. S. Nejad, T. H. Chen, J Craig Dutton

Research output: Contribution to journalArticlepeer-review

Abstract

Temporally correlated Rayleigh/Mie scattering images were used to examine the convection characteristics of the large-scale vortex structures developing in flowfields created by sonic transverse injection through circular and elliptical nozzles into a Mach 1.98 crossflow. Both compressibility and injector geometry were found to have significant influences on the convection characteristics of the large eddies. High compressibility injection cases produce eddies having dramatically larger near-field convection velocities than those in low compressibility cases. Farther downstream, the large-scale vortices tend to travel at velocities nearer the freestream veocity. Injector geometry primarily affects the near-field behavior.

Original languageEnglish (US)
Pages (from-to)397-407
Number of pages11
JournalExperiments in Fluids
Volume22
Issue number5
DOIs
StatePublished - Mar 1997

ASJC Scopus subject areas

  • Computational Mechanics
  • Mechanics of Materials
  • Physics and Astronomy(all)
  • Fluid Flow and Transfer Processes

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