Characteristics of Supersonic Combustion with Hartmann-Sprenger Tube Aided Fuel Injection

The TDLAS and static pressure were used to investigate the combustion of the excited ethylene jet into the supersonic flow in this article. The jet was from the Hartmann-Sprenger tube, which was put into the traditional jet device. The jet was excited at three different frequencies and compared with the base case without excitation. The results showed that the higher static pressure could be obtained in the excited cases. The excited jet didn't only take effects on the jet shear layer, but also influenced the turbulence intensity near field, and the right excited frequency can short the mixing and combusting distance. The excited jet can help reduce the combustor length.