50-kHz-rate 2D imaging of temperature and H2O concentration at the exhaust plane of a J85 engine using hyperspectral tomography
50-kHz-rate 2D imaging of temperature and H2O concentration at the exhaust plane of a J85 engine using hyperspectral tomography
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DOI：
10.1364/oe.21.001152
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发表时间：
2013-01-14
期刊：
影响因子：
3.8
通讯作者：
Gord, James R.
中科院分区：
文献类型：
--
作者：
Ma, Lin;Li, Xuesong;Gord, James R.
本文介绍了一种新型激光诊断及其在实用航空推进发动机（通用电气 J85）中的演示。这种名为高光谱断层扫描 (HT) 的诊断技术能够同时对 225 个空间网格点的温度和水蒸气浓度进行二维 (2D) 成像，时间响应高达 50 kHz。据我们所知，这是第一次报道这种传感能力。本文介绍了HT技术的原理，报告了其在J85发动机中的运行和应用，并讨论了其对高速反应流研究的前景。 (C) 2013 美国光学学会
This paper describes a novel laser diagnostic and its demonstration in a practical aero-propulsion engine (General Electric J85). The diagnostic technique, named hyperspectral tomography (HT), enables simultaneous 2-dimensional (2D) imaging of temperature and water-vapor concentration at 225 spatial grid points with a temporal response up to 50 kHz. To our knowledge, this is the first time that such sensing capabilities have been reported. This paper introduces the principles of the HT techniques, reports its operation and application in a J85 engine, and discusses its perspective for the study of high-speed reactive flows. (C) 2013 Optical Society of America