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首页> 外文会议>AIAA Aerospace Sciences Meeting >See-through-wall Radar REMPI for Spatially Localized Temperature Measurements in a Well-Stirred Reactor
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See-through-wall Radar REMPI for Spatially Localized Temperature Measurements in a Well-Stirred Reactor

机译：透视壁雷达REMPI用于搅拌稳定的反应器中的空间局部温度测量

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摘要

Spatially localized measurements of temperature are demonstrated through the wall of a ceramic toroidal well-stirred reactor (WSR) using resonance enhanced multiphoton ionization (Radar REMPI). The WSR, which is used to study the emissions and combustion stability of realistic fuels, is constructed of ceramic SiO_2 and is optically opaque. Traditionally, in-situ non-intrusive optical diagnostic methods have not been utilized in the WSR due to harsh operating conditions and non-existing optical access. In this work, a single optical port on the bottom of the reactor was used to introduce a focused laser beam which generated REMPI plasma from molecular oxygen inside the WSR. Boltzmann plots from the resulting molecular oxygen REMPI spectra were analyzed to yield local gas temperatures. Temperature measurements were made at multiple positions, from the centerline of the WSR to the bottom of the reactor. The Radar REMPI temperature measurements were within ±10 K of thermocouple measurements obtained simultaneously at each corresponding location. This suggests that Radar REMPI is a viable non-intrusive, in-situ diagnostic technique for temperature, and potentially, species measurements through microwave-transparent materials.
机译：使用共振增强的多选孔电离（雷达Rempi），通过陶瓷环形孔搅拌反应器（WSR）的壁来证明空间局部测量。用于研究现实燃料的排放和燃烧稳定性的WSR由陶瓷SiO_2构成，是光学不透明的。传统上，由于苛刻的操作条件和不存在的光学访问，WSR中未在WSR中使用原位非侵入式光学诊断方法。在这项工作中，使用反应器底部的单个光学端口引入聚焦激光束，其产生从WSR内部的分子氧产生的Rempi等离子体。分析来自所得分子氧RemPI光谱的玻尔兹曼图以产生局部气体温度。温度测量在多个位置，从WSR的中心线到反应器的底部。雷达REMPI温度测量在每个相应位置同时获得的热电偶测量值。这表明雷达REMPI通过微波透明材料是一种可行的温度和潜在的物种测量的可行性非侵入性，原位诊断技术。

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