Extinction of a methane–air laminar jet diffusion flame using a soap bubble filled with nitrogen gas
This movie shows the laser sheet visualization of the blowout process of the laminar jet diffusion flame by using a nitrogen-gas soap bubble. It is seen that the two flows of nitrogen gas affect and extinguish the methane–air laminar jet diffusion flame. The first flow locally extinguishes the flame base region of the jet diffusion flame. Then the second flow reaches the flame base of the lifted flame and supplies nitrogen gas to the flame base. Finally, the whole flame blowout occurs.