Figure 4
From: Preventing a global transition to thermoacoustic instability by targeting local dynamics
Growth of σ2 of local heat release rate fluctuations between two values of the control parameter \(\dot{m}_{air}\) = 550 SLPM and 650 SLPM for experiments with (a) IS and (b) OS. For IS, growth of σ2 is negligible at Z2 while for OS, there is growth of σ2 at Z2. Regions of high growth of σ2 are highlighted using dashed green curves.
