Oxygen-distribution imaging with a novel two-tracer laser-induced fluorescence technique |
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Authors: | W Koban J Schorr C Schulz |
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Institution: | (1) PCI, Physikalisch-Chemisches Institut, University of Heidelberg, INF 253, 69120 Heidelberg, Germany, DE |
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Abstract: | We introduce a new technique for imaging oxygen concentrations in fuel/air mixtures that takes advantage of the different
responses of toluene and 3-pentanone to collisional quenching by molecular oxygen. Since laser-induced fluorescence signals
from both tracers upon excitation at 248 nm are spectrally well separated, simultaneous detection is possible. The technique
is first applied to instantaneous imaging in turbulent mixing processes of interacting seeded air and nitrogen flows.
Received: 1 August 2001 / Revised version: 29 October 2001 / Published online: 29 November 2001 |
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Keywords: | PACS: 32 50 +d 42 62 -b 47 40 Dc |
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