Heat fluctuation measurements in a flame using a lightweight laser method (journal publication)

Monitoring combustion stability with an interferometric method was validated by a team composed of CBOne members, TU Graz staff and of CNRS researchers.

The results are published in the journal "Combustion and Flame".



Interferometric Determination of Heat Release Rate in a Pulsated Flame
Leitgeb, T., Schuller, T., Durox, D., Giuliani, F., Koeberl, S., Woisetschlaeger, J.,
Combustion and Flame, 2012

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Imagine the flame of your combustor suddenly turns unsteady, compromising the security of the system. Imagine conventional sensors do not detect it while being blurred by other noises. CBOne works on a laser-based method that catches the information of combustion stability at the very core of the flame. Implementation on real systems is now feasible.

Density fluctuations at the very core of the flame are a high fidelity tracer reporting on the stability of this flame.

A project named SPQR (Sound Pressure P'' - heat release Q'' - density Rho'') was initiated 2009 between members of CBOne and of Ecole Centrale Paris / CNRS / EM2C. EM2C is a CNRS entity at Ecole Centrale Paris. The study aimed to validate a measurement technique based on interferometry, able to detect with a high accuracy density fluctuations in a flame. The method was validated on a test case, a well described flame from the EM2C laboratory called the "M" flame. The results of this study are published in the journal "Combustion and Flame".

The SPQR project was supported by the Austrian Association for Research (OeFG) with the research project 06/11354. All parties who made this study possible are kindly acknowledged.

Read more under the References & Download section about flame monitoring using laser vibrometry and how to implement it on real systems, a technology mastered at CBOne.