Stabilization of lean flames with nanosecond discharges in a gas turbine model combustor

Victorien P Blanchard (1) , Frédéric Roqué (1) , Philippe Scouflaire (1) , Christophe O Laux (1) , Sébastien Ducruix (1)

1 EM2C - Laboratoire d'Énergétique Moléculaire et Macroscopique, Combustion

This work presents an experimental study of the stabilization of lean methane-air flames by nanosecond repetitively pulsed (NRP) discharges. The experimental facility consists of a gas turbine model combustor with a Lean Premixed Prevaporized multipoint injector. The fuel is injected through two stages, each stabilized by swirl. This facility is representative of a single sector of a gas turbine combustion chamber. The NRP discharges are found to significantly extend the lean blow-off limit for a wide range of operating conditions, with flame thermal powers up to 100 kW, and with an electric power less than 0.2% of the flame thermal power.

Domains: Engineering Sciences [physics]

Victorien P Blanchard, Frédéric Roqué, Philippe Scouflaire, Christophe O Laux, Sébastien Ducruix. Stabilization of lean flames with nanosecond discharges in a gas turbine model combustor. AIAA SCITECH 2023 Forum, American Institute of Aeronautics and Astronautics, 2023, ⟨10.2514/6.2023-2387⟩. ⟨hal-03966404⟩