某折流燃烧室火焰筒壁温试验

在发动机整机上,利用多变色不可逆示温漆测温法对采用全气膜发散冷却结构的某折流燃烧室火焰筒的壁温进行了试验,获得了火焰筒壁面温度分布规律,并将试验结果与流场计算结果进行了对比分析.研究表明：①该折流燃烧室火焰筒壁温分布较均匀,冷却方式合理;②火焰筒壁温梯度较小,最高壁温远低于所选材料的允许工作极限值,预计该火焰筒使用寿命...

Experiment on the liner wall temperature of a slinger combustor

In an engine overall experiment,the liner wall temperature of a slinger combustor with diffusion cooling was measured by thermoindicator paint which may change color with varied temperature.The wall temperature distribution rule of the slinger combustor's liner was obtained.The experiment results were compared with numerical computations of flow field.The researches indicate that:(1)the temperature distribution of the liner wall is uniform,and the cooling method of the slinger combustor liner is acceptable;(2) the liner wall temperature gradient is small and the maximum wall temperature is much lower than the liner material's allowable operating temperature,hence,the liner is expected to have long endurance life.