Velocity, vorticity, and strain-rate ahead of a flame measured in an engine using particle image velocimetry

David L. Reuss, Mark Bardsley, Philip G. Felton, Christopher C. Landreth, Ronald J. Adrian

Research output: Contribution to journalConference articlepeer-review

27 Scopus citations

Abstract

Particle Image Velocimetry (PIV) was used to make instantaneous velocity measurements over a 24 mm by 32 mm area in a fired two-stroke cycle engine. The unburned-gas regions of the photographs were successfully interrogated adjacent to the flames and with sufficient resolution to resolve the velocity integral-length scales. A highpass filtering algorithm, different from that used in a previous motored-engine study, was implemented to allow for the arbitrary flame boundary. The large-scale vorticity in this study was considerably higher than in a previous study where a different engine was used. The large-scale normal and shear strain-rates distributions revealed only a small increase over those in the previous study, and the magnitude of the vorticity and shearstrain-rate appeared to be larger near the flame. However, the data are too limited to offer general conclusions about the flow.

Original languageEnglish (US)
JournalSAE Technical Papers
DOIs
StatePublished - 1990
Externally publishedYes
EventInternational Congress and Exposition - Detroit, MI, United States
Duration: Feb 26 1990Mar 2 1990

All Science Journal Classification (ASJC) codes

  • Automotive Engineering
  • Safety, Risk, Reliability and Quality
  • Pollution
  • Industrial and Manufacturing Engineering

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