In this study the characteristic of lean‐premixed flames from a rotating double concentric
burner is investigated. We investigate especially on the effect of rotational speed, mixture
ratio and mixture velocity on the shape, dynamics and height of premixed flames. It is found
that as the rotational speed reaches certain value for low velocity jet, the premixed flame
buckles. Buckling becomes more prominent as the angular velocity increases and
eventually the flame enters the burner. At sufficiently high rotational speeds, flame …