Abstract The multi-parameter distributions of non-premixed combustion were investigated in this work by using deflection tomography and particle image velocimetry (PIV). An experimental apparatus composed of a burning system, a deflection tomography system, and a PIV system is initially designed and constructed. Two charge-coupled diode cameras are controlled by a synchroniser to capture Moire fringes and tracer particles simultaneously, and the velocity contour and streamline map are obtained from the tracer particle distributions and flame images. The temperature distribution is reconstructed from the Moire fringes based on the wave-front recovery method and Abel-inversion algorithm, and the velocity and temperature distributions are matched in the combustion field by using the pixel registration method. The matching results show that the high-temperature and high-speed zones of the combustion flow field do not coincide under the experimental conditions. Finally, the coupling imaging effect and measurement errors in the multi-parameter measurement are discussed.

中文翻译：

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非预混燃烧的同时偏转断层扫描和 PIV 测量

摘要 本文利用偏转断层扫描和粒子图像测速（PIV）研究了非预混燃烧的多参数分布。初步设计并搭建了由燃烧系统、偏转断层扫描系统和PIV系统组成的实验装置。两个电荷耦合二极管相机由同步器控制，同时捕获莫尔条纹和示踪粒子，并从示踪粒子分布和火焰图像中获得速度轮廓和流线图。基于波前恢复法和阿贝尔反演算法从莫尔条纹重建温度分布，并利用像素配准法匹配燃烧场中的速度和温度分布。匹配结果表明，在实验条件下燃烧流场的高温区和高速区并不重合。最后讨论了多参数测量中的耦合成像效应和测量误差。