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Direct three dimensional tomography of flames using maximization of entropy technique

机译：使用熵技术最大化的火焰直接三维断层扫描

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摘要

Presently, there are numerous applications for non-destructive techniques like emission tomography, laser based methods and particle image velocimetry that are used to study flame characteristics. Reconstruction of the flame intensity field using emission tomography has the advantage over other technologies that it gives accurate results but at the same time requires relatively inexpensive equipment, and therefore, has numerous industrial applications. In the present paper, a new algorithm performing Direct-3D reconstruction using the maximization of entropy (MENT) methodology has been introduced. Through detailed studies using a mathematical object, it has been shown that the Direct-3D algorithm shows significantly reduced errors as compared to 2D slice-by-slice reconstruction algorithms. Secondly, the major features of the proposed algorithm, for e.g., effect of orientation, effect of number of views, and robustness have been discussed. Finally, a few qualitative results from actual flames have been presented using a candle and a gas fired burner, and the results match well with the actual flame geometry and intensity distribution.
机译：当前，无损技术有许多应用，例如发射断层扫描，基于激光的方法和用于研究火焰特性的粒子图像测速仪。使用发射体层摄影术重建火焰强度场具有优于其他技术的优势，它可以提供准确的结果，但同时需要相对便宜的设备，因此具有许多工业应用。在本文中，介绍了一种使用熵最大化（MENT）方法执行Direct-3D重构的新算法。通过使用数学对象进行的详细研究，表明Direct-3D算法与2D逐段重建算法相比，显示出显着减少的错误。其次，讨论了所提出算法的主要特征，例如定向效果，视图数量的影响和鲁棒性。最后，使用蜡烛和燃气燃烧器从实际火焰中获得了一些定性结果，这些结果与实际火焰的几何形状和强度分布非常吻合。

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  • 来源
    《Combustion and Flame》 |2014年第1期|173-183|共11页
  • 作者

    Anurag Goyal; Shashank Chaudhry; P.M.V. Subbarao;

  • 作者单位

    Department of Mechanical Engineering, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India;

    Department of Mechanical Engineering, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India;

    Department of Mechanical Engineering, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Flame tomography; Direct-3D reconstruction; Maximization of entropy technique; Monte Carlo simulation;

    机译：火焰断层扫描;Direct-3D重建;熵技术的最大化;蒙特卡洛模拟;

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