Thermoacoustic instability of a laminar premixed flame in Rijke tube with a hydrodynamic region

Numerical investigation of the effect of distributed heat sources on heat-to-sound conversion in a T-shaped thermoacoustic system

“…It was found that the thermoacoustic frequency is oscillating with increased 'heater' location. This prediction is consistent with the finding obtained by Zhao and Chow [24].…”

“…In order to gain insight on the heat-to-sound conversion process, numerical and experimental investigations of Rijke-type thermoacoustic systems [19][20][21][22][23][24] have been conducted. Experimental measurements of the pressure power spectrum of a Rijke combustor [23] were performed to study the nonlinear coupling between heat release rate and the heat-driven sound.…”

Experiments on heat content inside a Rijke tube with suppression of thermo-acoustics instability

“…Various active control methods in closeloop form have been reported to suppress noisy combustion instabilities, which comprised of modulating the fuel flow rate, [25][26][27] air flow rate, 28,29 air-fuel mixing in pre-mixer, 30 and phase shift. [31][32][33][34] A review of the practical methods to implement feedback control techniques both on the laboratory scale and on largescale combustors is provided by Dowling and Morgans. 35 Some control techniques in open-loop form have also been found equally promising.…”

Effect of heat source on transient energy growth analysis of a thermoacoustic system

“…Mariappan et al conducted such transient growth measurements on a Rijke tube [28], which is a simple but widely used platform [36][37][38][39] to study heat-to-sound conversion. Kim and Hochgreb [41] performed similar measurements on a lean-premixed gas turbine combustor in Cambridge.…”