We report a technique that is capable of making simultaneous two-point time-series measurements of minor-species concentrations in turbulent flames. The experimental setup, which incorporates picosecond time-resolved laser-induced fluorescence, has a spatial resolution of less than 250 µm and a temporal resolution of less than 100 µs, which spatially and temporally resolve microscales in many turbulent flows. Two-point time-series data are given for a standard turbulent nonpremixed flame at Re=10,000, including a discussion of potential implications.
© 2005 Optical Society of America
(120.0120) Instrumentation, measurement, and metrology : Instrumentation, measurement, and metrology
(120.1740) Instrumentation, measurement, and metrology : Combustion diagnostics
(300.2530) Spectroscopy : Fluorescence, laser-induced
Instrumentation, Measurement, and Metrology
Jiayao Zhang, Krishna K. Venkatesan, Galen B. King, Normand M. Laurendeau, and Michael W. Renfro, "Two-point time-series measurements of minor-species concentrations in a turbulent nonpremixed flame," Opt. Lett. 30, 3144-3146 (2005)