Mixing characteristic and flow features of pylon-aided fuel injection into a supersonic crossflow

Flowfield structures of pylon-aided fuel injection of a sonic jet into a supersonic crossflow with Ma_∞=2.95 have been investigated by RANS method. One case has been studied for jet-to-crossflow momentum flux ratios of 7.7, and the results are compared with those obtained by normal injection of a single jet from a flat plate without a pylon. Upstream of the jet orifice, the detached shock generated at the leading edge of the pylon is identified by inserting with the separation shock. Elevation of the jet plume height facilitates the mixing of the jet and the main flow. More CVP structures make pylon-aided fuel injection cases a better mixing performance. Besides, the mechanism of mixing enhancement resulting from the pylon is also elaborated in the present work.