Sebastian Hermeth, Gabriel Staffelbach, Laurent Y.M. Gicquel, Vyacheslav Anisimov, Cinzia Cirigliano, Thierry Poinsot
abstractLarge Eddy Simulations (LES) are used to study a lean swirl-stabilized gas turbine burner where the flow exhibits two stable states. In the first one, the flame is attached to the central bluff body upstream of the central recirculation zone which contains burnt gases. In the second one the flame is detached from the central bluff body downecirculation zone which is filled by cold unburnt gases and dominated by a strong Precessing Vortex Core (PVC). The existence of these two states has an important e…
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