Characterization of wall temperature distributions in a gas turbine model combustor measured by 2D phosphor thermometry
Characterization of wall temperature distributions in a gas turbine model combustor measured by 2D phosphor thermometry
复制标题
通过二维荧光测温法测量燃气轮机模型燃烧室壁温分布特征
DOI：
10.1016/j.proci.2020.06.088
复制
发表时间：
2020
影响因子：
3.4
通讯作者：
W. Meier
中科院分区：
文献类型：
--
作者：
C. Arndt;P. Nau;W. Meier
在常压ch4下，对光学可及的双涡流燃气轮机模型燃烧室的窗口和燃烧室柱进行了二维荧光体瞬时温度测量。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）。荧光粉涂层应用于燃烧室柱和三个垂直定向条纹上的一个燃烧室窗口。利用插值法，可以确定整个燃烧室窗口的表面温度。通过测量燃烧室窗口内外表面的表面温度来确定燃烧室窗口的热损失。使用Nd:YAG激光的四次谐波照射荧光粉涂层，形成宽光片。用高速CMOS相机测量了磷光的空间分辨、温度依赖的衰减率。研究了三种流场相似、热功率在22.5 kW ~ 30 kW之间、等效比在0.63 ~ 0.83之间的火焰。由于火焰特性包括流场、热释放和温度分布是已知的，因此可以检测火焰与表面温度之间的相互作用。这样就可以解释火焰壁面温度的不同。
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 CH4at 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.
影响因子：
2.1
作者：
Abram, Christopher;Fond, Benoit;Beyrau, Frank
通讯作者：
Beyrau, Frank