Flame bifurcation under the acoustic effect within the frequencies from 1 to 3 kHz

Project: Visualization of Mechanical Processes

Journal: Visualization of Mechanical Processes: An International Online Journal

Article: FEATURES OF PROPANE COMBUSTION IN ROUND AND PLANE MACRO - AND MICROJET IN THE TRANSVERSE ACOUSTIC FIELD AT SMALL REYNOLDS NUMBERS

Topics: Gas dynamics, Turbulence, Thermodynamics of Combustion, Nozzles, Visualization techniques, Acoustics

This movie shows evolution of the flame attached to the nozzle exit in the cases of teh transverse acoustic field effect. When the jet outflow velocity reaches a certain threshold value, the flame lifts off abruptly from the nozzle exit and the so-called lifted flame is implemented. In this case, the flame bifurcation under the acoustic action within frequencies from 1 to 3 kHz can be clearly observed.