Comparison of a) CH₂O PLIF measurements [31] against b) instantaneous CH₂O mass fractions on a centerplane and c) circumferentially averaged CH₂O mass fractions predicted by the LES. Reprinted from Proceedings of the Combustion Institute Volume 35, Issue 3: Scott A. Skeen, Julien Manin, Lyle M. Pickett, Simultaneous formaldehyde PLIF and high-speed Schlieren imaging for ignition visualization in high-pressure spray flames, Pages 3167-3174, 2015, with permission from Elsevier.