Instantaneous 2D phosphor thermometry was performed on the windows and combustion chamber posts of an optically accessible dual-swirl gas turbine model combustor operated with CH₄ at atmospheric pressure. Two phosphors were used in order to measure different surface temperature ranges: YAP:Eu (temperature range 850 K – 1150 K) and YAG:Eu (temperature range 1100 K – 1300 K). Phosphor coatings were applied to the combustion chamber post and to three vertically oriented stripes on one combustion chamber window. Using interpolation, this allowed the determination of the surface temperature of the complete combustion chamber window. Heat losses across the combustion chamber window were determined by measuring the surface temperature on the inner and outer surface of the window. The phosphor coating was illuminated using the fourth harmonic of a Nd:YAG laser, which was formed into a broad light sheet. The spatially resolved, temperature-dependent decay rate of the phosphorescence was measured with a high speed CMOS camera. Three flames with similar flow fields and thermal powers between 22.5 kW and 30 kW and equivalence ratios between 0.63 and 0.83 were studied. Because the flame characteristics including flow field, heat release and temperature distributions were known from previous measurements the interaction between the flame and the surface temperature could be examined. In this way, the different wall temperatures of the flames could be explained.

瞬时二维荧光粉测温是在装有CH _4的可光学访问的双旋流燃气轮机模型燃烧器的窗口和燃烧室立柱上进行的在大气压下。为了测量不同的表面温度范围，使用了两种荧光粉：YAP：Eu（温度范围850 K – 1150 K）和YAG：Eu（温度范围1100 K – 1300 K）。将磷光体涂层施加到燃烧室立柱上，并在一个燃烧室窗口上施加到三个垂直定向的条上。通过插值，可以确定整个燃烧室窗口的表面温度。通过测量窗口内，外表面的表面温度来确定燃烧室窗口上的热损失。使用Nd：YAG激光的四次谐波对磷光体涂层进行照明，然后将其形成为宽光片。用高速CMOS相机测量了磷光的空间分辨的，温度依赖性的衰减率。研究了三种火焰，它们具有相似的流场，热功率在22.5 kW和30 kW之间，当量比在0.63和0.83之间。因为从先前的测量中可以知道火焰的特性，包括流场，热量释放和温度分布，所以可以检查火焰与表面温度之间的相互作用。这样，可以解释火焰的不同壁温。