Thermoacoustic Stability Boundaries in the Model Combustion Chamber with a Gas-Centered Swirl Coaxial Injector

Figure 3

Flame patterns for several recess lengths of (a) 4 mm, (b) 8 mm, and (c) 12 mm from the experiments of test no. 40 (, , , and ).

(a) Recess 4 mm

(b) Recess 8 mm

(c) Recess 12 mm