High-Pressure Laminar Burner

Versions

Le 04/07/2014

Frédéric Grisch  •  ico

Vincent Modica  •  ico

Purpose

Improve the design of advanced lean aero-engines combustors in the detailed analysis of the pollutant formation mechanisms and flame stability criteria during combustion of multi-component fuels.

Solution

A current approach used to reduce pollutant emissions is to burn the fuel/air mixture under lean conditions. This solution is not without consequences for the flame dynamics, which can produce combustion instabilities leading to flashback. One approach to quantify the flame stability is to know the laminar flame velocity. This parameter is also useful for qualifying turbulent flame structure and turbulent flame velocity. Another physical parameter to be considered is the chemical composition of multi-component fuels. As their chemical kinetic models are not yet optimized for real operating conditions, their effects on the production of combustion instabilities and pollutant formation are still imprecise.
The experimental measurements will be used to elaborate criteria on flame stability and to validate the performances of the fuel kinetic model in those conditions.

Experimental Facility

High-pressure Bunsen laminar burner operating with gaseous fuel (CH4, C3H8 …) and liquid multi-component fuels (kerosene, biofuels, diesel, gasoline …).

Operating Conditions

Equivalence ratio : 0.5 – 1.4,
Pressure : 0.1 - 2.0 MPa,
Inlet Temperature : 300 - 600 K.

Measuring instrumentation

Schlieren, OH*chemililuminescence (laminar flame velocity), laser-induced fluorescence (PLIF) (OH, CH2O, NO, CO species concentration), Rayleigh imaging, Coherent anti-Stokes Raman scattering (temperature), 2-λ Indium laser-induced fluorescence (2D temperature distribution).

 

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MàJ ··· 19 novembre 2019

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