Investigating turbulent jet diffusion flames in a methane-hydrogen-nitrogen mix

Jet diffusion flame
Jet diffusion flame operated with a mixture of methane, hydrogen and nitrogen. Left: Rayleigh scattered light, middle: photo, right: OH distribution.
Credit:

DLR

The motivation for investigating these flames was, on the one hand, to gain a better understanding of the turbulence-chemistry interaction in turbulent flames and, on the other hand, to provide measurement data for the validation of numerical simulations.

The turbulent CH4/H2/N2 jet diffusion flames termed DLR_A and DLR_B were often used for comparisons with calculated results. The experimental work was performed in a collaboration between the Sandia National Labs, TU Darmstadt and the DLR Institute of Combustion Technology. 

A description of the burner and flames as well the detailed data sets are available on the homepage of the TNF Workshop, https://tnfworkshop.org/data-archives/simplejet/dlrflames/

Correlation between NO mass fraction and mixture fraction
Example of the correlation between NO mass fraction and mixture fraction from Raman/Rayleigh/LIF measurements in the DLR_A jet diffusion flame
Credit:

DLR