Structure of Propane Jet Diffusion Flame in a Cross Flow

抄録

An experimental study was made of the structure of the propane jet diffusion flame discharged normal to a free stream of air with a uniform velocity profile. The velocity profile in the flame was measured by application of the forward scattering LDV system. A gas chromatograph was used to measure the concentration profile of the major species in the flame. The results showed that the flame configuration were correlated well with the ratio of fuel jet to cross-flow velocity. The transition from an elliptic to a kidney shape was observed in the contour of constant velocity in the transverse cross section normal to the jet axis of the flame. A peak in the CO concentration profile was observed below the jet axis where the C₃H₈ concentration showed a maximum, and above the location at a minimum O₂ concentration. The CO₂ concentration profile had dual peaks which bore a resemblance to the temperature profile.