Ignition and lean blow out performance of TVC with different fuel-air matching forms

To investigated the lean ignition and lean blow out performance of a trapped vortex combustor ( TVC) test rig, abundant experiments have been employed in variety inlet conditions. There are four forebody cases for the TVC with kerosene as fuel. The results of the experiment indicate that; with the air of the after body increased, ignition fuel air ratio increased first and then turned down; at most operation conditions, ignition fuel air ratio is under 0. 04; lean blow-out fuel air ratio increased and turned down with main air decreased; the blow-out fuel air ratio of all the cases were less than 0. 004. Rising the temperature of fore-wall is good for ignition and LBO.