Accuracy and resolution issues in NO/acetone PLIF measurements of gas-phase molecular mixing

T. R. Meyer, G. F. King, G. C. Martin, R. P. Lucht, F. R. Schauer, J Craig Dutton

Research output: Contribution to journalArticlepeer-review

Abstract

Under-resolved passive-scalar measurements in liquid and gaseous shear layers have been known to over-predict mixed-fluid quantities as a result of sub-resolution stirring. In recent studies, simultaneous cold-chemistry (nitric oxide) and passive-scalar (acetone) planar laser-induced fluorescence have been employed for the measurement of sub-resolution molecular mixing. In the current work, the theory and experimental approach of this technique are reviewed, and new analyses of quenching corrections, differential diffusion errors, and imaging resolution are presented. Results from both experimental work and direct numerical simulations indicate that this technique provides a successful means of quantifying macro- and micro-scale turbulent molecular mixing in gaseous shear flows.

Original languageEnglish (US)
Pages (from-to)603-611
Number of pages9
JournalExperiments in Fluids
Volume32
Issue number6
DOIs
StatePublished - Jun 1 2002

ASJC Scopus subject areas

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

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