Video: singing_flame.mpeg   4 MB download

Slowed down 500 times











Combustion of cetane (hexadecane) CH3(CH2)14CH3 vapor in air. Self-oscillation mode in changing intensity of combustion at frequency 250 Hz ("Singing flame"). Shutter speed 7000 frames per second. Vapor pressure of fuel. Atmospheric pressure. Air pressure in flame area. Level of the burner orifice. Flame light intensity. Frame number in high-speed shooting. Scale of the flame image.
Project funding, design and fabrication of the experimental setup, conducting the experiments: Danko Priimak, Inventrace, USA, 2009.