Application of imaging techniques to the study of vortex-flame interactions

Gregory J. Fiechtner; Paul-Henri Renard; James R. Gord; Keith D. Grinstead Jr.; Campbell D. Carter; Juan Carlos Rolon

doi:10.1117/12.365745

13 October 1999 Application of imaging techniques to the study of vortex-flame interactions

Gregory J. Fiechtner, Paul-Henri Renard, James R. Gord, Keith D. Grinstead Jr., Campbell D. Carter, Juan Carlos Rolon

Proceedings Volume 3783, Optical Diagnostics for Fluids/Heat/Combustion and Photomechanics for Solids; (1999) https://doi.org/10.1117/12.365745
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1999, Denver, CO, United States

Abstract

A thorough understanding of turbulent reacting flows is essential to the continued development of practical combustion systems. Unfortunately, these studies represent a tremendous research challenge owing to the inherent complexity of such flows. In an effort to reduce the complexity of these systems while capturing the essential features that define the physics and chemistry of turbulent reacting flows, we have been studying the interaction of a vortex with a laminar flame. The experimental apparatus includes a piston-cylinder device configured to provide a controlled toroidal vortex. The generated vortex/jet interacts with a nonpremixed hydrogen-air flame supported in a counterflow burner. The counterflow configuration permits precise selection of the flame and the associated strain field. Vortex characterization is essential to interpreting the experimental observation and accomplishing numerical modeling of vortex-flame interactions. Two-color particle- image velocimetry (PIV) has been employed to characterize the vortex and to describe the underlying counterflow velocity field. The hydroxyl (OH) layer produced by the flame is imaged using planar laser-induced fluorescence (PLIF). The PIV and PLIF measurements of OH are performed simultaneously. A distinct annular extinction of the OH layer is observed, in good agreement with previous computational modeling predictions for the apparatus.

Citation Download Citation

Gregory J. Fiechtner, Paul-Henri Renard, James R. Gord, Keith D. Grinstead Jr., Campbell D. Carter, and Juan Carlos Rolon "Application of imaging techniques to the study of vortex-flame interactions", Proc. SPIE 3783, Optical Diagnostics for Fluids/Heat/Combustion and Photomechanics for Solids, (13 October 1999); https://doi.org/10.1117/12.365745

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KEYWORDS

Clocks

Combustion

Particles

Cameras

Hydrogen

Pulsed laser operation

Scattering

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