Oxygen/Hydrogen-Planar-Laser-Induced Fluorescence Measurements and Accuracy Investigation in High-Pressure Combustion
Oxygen/Hydrogen-Planar-Laser-Induced Fluorescence Measurements and Accuracy Investigation in High-Pressure Combustion
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DOI：
10.2514/1.39013
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发表时间：
2009-07-01
影响因子：
1.9
通讯作者：
Segal, Corin
中科院分区：
文献类型：
--
作者：
Vaidyanathan, Aravind;Gustavsson, Jonas;Segal, Corin
迄今为止，基于非侵入式方法，已经在一系列实验装置的隔离条件下通过使用各种方法获得了高压反应流中的流入物质浓度测量。此外，缺乏对与测量技术相关的不确定性的广泛评估。一般来说，这些方法基于根据假设确定的校准，这些假设没有被充分量化以提供与这些测量相关的不确定性的详细范围。这项工作量化了与火箭发动机中典型使用的剪切同轴喷射器产生的氧-氢系统中 OH 测量相关的不确定性。在 10 至 53 bar 的压力范围内获得平面 OH 分布，在统一研究中提供瞬时和平均分布，使用相同的实验设置并保持其余参数相同。对 18 个不同参数的不确定度进行了评估，发现在 10、27、37 和 53 bar 时的总体均方根误差分别为 21.9%、22.8%、22.5% 和 22.9%。
Inflow species concentration measurements in reacting flows at high pressures, based on nonintrusive methods, have been acquired so far for isolated conditions in a range of experimental devices and by using a variety of methods. Furthermore, extensive assessments of the uncertainties associated with the measurement techniques are lacking. In general, these methods have been based on calibrations determined from assumptions that were not sufficiently quantified to provide a detailed range of the uncertainties associated with these measurements. This work quantifies the uncertainties associated with OH measurement in an oxygen-hydrogen system produced by a shear, coaxial injector typical of those used in rocket engines. Planar OH distributions are obtained for a range of pressures from 10 to 53 bar, providing instantaneous and averaged distribution in a unified study, using the same experimental setup and maintaining the rest of the parameters the same. The uncertainty of 18 different parameters was evaluated and the overall root mean square error was found as 21.9, 22.8, 22.5, and 22.9% at 10, 27, 37, and 53 bar, respectively.