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Proceedings Paper

Simultaneous temperature, concentration, and velocity fields measurements in a turbulent heated jet using combined laser-induced fluorescence and PIV
Author(s): Alexandre Bresson; Christophe Brossard; Pierre Gicquel; Frederic Grisch
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Paper Abstract

Mixing process of a passive scalar in a heated turbulent jt at Reynolds numbers between 13,000 and 21,000 is studied experientaly using combined two-color Planar Laser-Induced Fluorescence (2λ-PLIF) and Particle-Image Velocimetry (PIV). The PLIF system is based on acetone fluorescence for temperature and concentration measurement. The aim of the present paper is to obtain a reliable reference data set for the validation of numerical simulation of turbulent fluxes. Experiment was carried out on a heated turbulent jet of acetone-seeded air emanating from the 10 mm-diameter nozzle exit of an electric air heater with exit temperature Ti = 500 K. The jet is seeded to approximately 3% acetone by bubbling the air stream through liquid acetone. The mean and fluctuating dynamic and thermal fields are investigated and determined. This tool will allow to determine the temperature-velocity as well as the concentration-velocity cross-correlations in order to characterize the turbulent characteristics of the flow such as the turbulent diffusivity and the turbulent Prandtl number.

Paper Details

Date Published: 10 November 2003
PDF: 12 pages
Proc. SPIE 5191, Optical Diagnostics for Fluids, Solids, and Combustion II, (10 November 2003); doi: 10.1117/12.507448
Show Author Affiliations
Alexandre Bresson, Office National d'Etudes et de Recherches Aerospatiales (France)
Christophe Brossard, Office National d'Etudes et de Recherches Aerospatiales (France)
Pierre Gicquel, Office National d'Etudes et de Recherches Aerospatiales (France)
Frederic Grisch, Office National d'Etudes et de Recherches Aerospatiales (France)


Published in SPIE Proceedings Vol. 5191:
Optical Diagnostics for Fluids, Solids, and Combustion II
Patrick V. Farrell; Fu-Pen Chiang; Carolyn R. Mercer; Gongxin Shen, Editor(s)

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