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首页> 外文期刊>Measurement Science & Technology >A flat flame burner for the calibration of laser thermometry techniques
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A flat flame burner for the calibration of laser thermometry techniques

机译：用于校准激光测温技术的平面火焰燃烧器

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摘要

The design and experimental characterization of a burner is described, which has favourable characteristics for the accurate calibration of a range of optical thermometry techniques. The burner supports stable laminar flames and combines many of the advantages of several widely used burner designs without their disadvantages. It permits the application of point measurement techniques, line-of-sight techniques and planar imaging techniques; trace species, such as metal atoms, can be easily introduced into the flame. The implementation of the burner is described, followed by the presentation of data obtained from coherent anti-Stokes Raman scattering (CARS) measurements and numerical simulations. Spatially resolved measurements were performed over the entire flame profile at three different stoichiometries and factors causing systematic and random errors are described in detail. Measurement errors on mean temperatures were determined to be less than 1percent. The shot-to-shot measurement precision was determined to be 3.5-4.0percent (FWHM of temperature probability density function). The burner design together with the data presented in this paper can be used for the validation and calibration, respectively, of a variety of combustion thermometry techniques. Complete details of the burner design together with the obtained temperature data will be provided on the World Wide Web. Other researchers intending to validate and calibrate their own laser-based thermometry techniques will be able to cost-effectively reconstruct this burner and adopt the characterization presented here, thus being able to apply it without the need of their own basic validation. The authors are confident that a reconstructed burner, which is applied under the same conditions, will yield the same high level of accuracy and precision as that presented in this paper.
机译：描述了燃烧器的设计和实验特性，它具有对一系列光学测温技术进行精确校准的有利特性。该燃烧器支持稳定的层流火焰，并结合了几种广泛使用的燃烧器设计的许多优点而没有缺点。它允许应用点测量技术，视线技术和平面成像技术;痕量物质，例如金属原子，可以很容易地引入火焰中。描述了燃烧器的实现方式，然后介绍了从相干反斯托克斯拉曼散射（CARS）测量和数值模拟获得的数据。在三个不同的化学计量比下，在整个火焰轮廓上执行了空间分辨的测量，并详细描述了导致系统误差和随机误差的因素。确定平均温度的测量误差小于1％。逐次测量的精度确定为3.5-4.0％（温度概率密度函数的FWHM）。燃烧器设计以及本文中提供的数据可分别用于各种燃烧测温技术的验证和校准。燃烧器设计的完整细节以及获得的温度数据将在万维网上提供。打算验证和校准他们自己的基于激光的测温技术的其他研究人员将能够经济高效地重建该燃烧器并采用此处介绍的特性，从而能够在不需要他们自己的基本验证的情况下应用它。作者相信，在相同条件下使用的重构燃烧器将产生与本文所述相同的高精度和精密度。

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