CUED Publications database

Transient behavior of kerosene flames in a bluff-body stabilized swirl combustor

Allison, PM and Sidey, JAM and Mastorakos, E (2017) Transient behavior of kerosene flames in a bluff-body stabilized swirl combustor. In: UNSPECIFIED.

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Transient behavior of kerosene spray flames in a bluff-body, swirl stabilized combustor has been investigated with regards to lean blowout and thermoacoustic response to applied acoustic forcing, in order to study differences between several types of liquid kerosene fuels. The responses of a standard Jet-A blend (A2), Gevo-ATJ kerosene (C1), and a decane/trimethlybenzene blend (C5), to forced perturbations at 160 Hz and 40Hz, are evaluated through 5 kHz imaging of OH* chemiluminescence and pressure measurements. Flame transfer functions, which describe the coupling between the heat release and velocity fields within the combustor, depict large differences in the thermoacoustic behavior of each fuel. The transient lean blowout behavior is observed with high speed OH* imaging and some differences between flame structure and the temporal response at blowout for each fuel are observed. Local fuel distributions have been acquired through UV-Fuel PLIF as the flame approached lean blowout, showing a different fuel vapour pattern among the various fuels. The data highlight important differences between the studied kerosenes and can assist computational modelling efforts.

Item Type: Conference or Workshop Item (UNSPECIFIED)
Divisions: Div A > Energy
Depositing User: Cron Job
Date Deposited: 17 Jul 2017 19:26
Last Modified: 15 Apr 2021 05:06
DOI: 10.2514/6.2017-1569