Conclusion

This article describes the different types of induced fluorescence thermometry and how they can be used to measure temperature in the gas phase. This technique is well known in the industrial sector (aeronautics, automotive, etc.). These sectors need detailed knowledge of thermodynamic parameters in reactive flows to enhance engine performance or to meet increasingly restrictive anti-pollution and greenhouse gas emission standards.

The photophysical processes of fluorescent tracers were often studied a posteriori when the results of temperature measurements deviated from those expected. Current induced-fluorescence measurements clearly indicate that there are still questions surrounding our understanding of the fundamental photophysical mechanisms of fluorescent molecules. This makes it risky to extrapolate fluorescence signal intensity from calibration under high-pressure,...