模型燃烧室壁面与火焰温度光学测量方法研究

In order to investigate the relationship of combustor wall temperature and flame combustion of gas turbine, the combustion characteristics of the flame before and after the wall temperature of model combustor changes was studied experimentally. Wall temperature was measured by phosphorescence thermometry technology, and the three-dimensional structure and temperature field of flame were reconstructed by radiation tomography technology combined with two-color thermometry. The wall temperature was around 200 ℃ in the experiment, and the temperature range of the flame was 1 500 K to 2 000 K. The research results show that when the air flow impinges on the wall, the wall temperature changes locally, leading to the change of heat transfer conditions between the flame and the wall surface, which will directly affect the flame structure and temperature distribution, and the flame tends to develop in the section where the wall temperature decreases.