为研究燃气轮机燃烧室壁面温度与火焰燃烧的关系，实验研究了模型燃烧室壁面温度发生改变前后火焰的燃烧特性。采用磷光测温技术对壁面温度进行测量，利用辐射层析技术结合双色测温法对火焰的三维结构及温度场进行了重建。实验时壁面温度在200 ℃附近，火焰的温度范围是1 500~2 000 K。实验结果表明：当气流冲击壁面时，壁面温度发生局部变化，导致火焰与壁面的换热条件改变，会直接影响火焰结构及温度分布，火焰会趋向于壁面温度降低的部分发展。

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.

V231.2

国家自然科学基金（51976122）；国家科技重大专项（2019-III-0014）