Advanced combustion: Fuel-film evaporation and combustion

The aim of this study was to develop optical diagnostics to investigate the impact of evaporating fuel films in combustion as a source of polyaromatic hydrocarbons (possible particle precursors) (PAH) and soot.

Laser-induced fluorescenceto image fuel-film thickness

Fuel-film evaporation
Higher wall temperatures increase the fuel-film evaporation rate.

Fuel-film mass over time after start of injection (aSOI) at different wall temperatures (left) and fuel-film mass over time aSOI in a reacting and non-reacting environment (right)

High-speed color combustion-imaging visualizes the spray and fuel films, illuminated by a green LED, the flame front by chemiluminescence, and soot by natural incandescence.

High-speed combustion imaging reveals soot formation close to the evaporating fuel films

The full publication on this topic can be found here:

Report PaREGEn-D1.3-Spray-Spray-wall-interaction-simulations-PU-FINAL-2018.03.31.pdf

Scientific publication: https://doi.org/10.1177/1468087417733865