In gas turbine premix burners with aerodynamic flame stabilization, flame-vortex-interactions can cause flame flashback through combustion induced vortex breakdown (CIVB). Based on the consideration of theoretical fundamentals, rules for the design and the optimization of a stable flow field were derived. This approach was verified with a newly developed swirl burner geometry. Through the optimization of the flow field, flame flashback can be prevented and remarkable fuel flexibility can be reached. For the first time ever, the pressure scaling of CIVB was experimentally studied. Using a time scale comparison, the stability limits of the experimental result with elevated pressure can be correlated with atmospheric data.
«In gas turbine premix burners with aerodynamic flame stabilization, flame-vortex-interactions can cause flame flashback through combustion induced vortex breakdown (CIVB). Based on the consideration of theoretical fundamentals, rules for the design and the optimization of a stable flow field were derived. This approach was verified with a newly developed swirl burner geometry. Through the optimization of the flow field, flame flashback can be prevented and remarkable fuel flexibility can be rea...
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