Effects of inlet velocity distortion on outlet temperature distribution of a reverse-flow combustor

In order to study the effect of combustor inlet velocity distortion on the reverse-flow combustor outlet temperature distribution, the radial distortion and circumferential distortion plates were designed according to the compressor outlet velocity profile, and the distortion was validated by numerical simulation. And an experiment on the outlet temperature distribution of three sector rectangle model combustors was conducted. The results show that radial distortion and circumference distortion could cause uneven distribution of temperature and bring overall temperature distribution factor (OTDF) a significant increase, and the effect of circumference distortion seems greater. In addition, from the temperature contour and radial temperature distribution factor (RTDF) contour, the radial distortion and circumferential distortion will make the combustor outlet temperature a zig-zag fluctuation close to the inner wall, and present a cyclical trend, making outlet temperature distribution nonuniform.