Abstract
Laminar flame propagation mechanism and flame stability near the flammable limit have been investigated experimentally for a downward tube propagating one dimensional premixed flame. In order to minimize the buoyancy induced turbulence near the tube, the velocity and the thermal boundary layers are controlled by using the wall suction. The flow structures in the tube have been measured by a PIV. The boundary layers control is useful to minimize the turbulence and to extend the flammability limit for the downward propagating premixed flame.
