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Solution of radiative intensity with high directional resolution in three-dimensional rectangular enclosures by DRESOR method

机译:用DRESOR方法求解三维矩形外壳中具有高方向分辨率的辐射强度

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摘要

Radiative intensity with high directional resolution at boundaries can provide abundant information about the medium properties and temperature, which is very useful for inverse analysis. Monte Carlo method is a widely used method due to its flexibility for complex radiative transfer problems. In this work Distributions of Ratios of Energy Scattered Or Reflected (DRESOR) method, which is based on Monte Carlo method, is developed for radiative intensity calculation in a three-dimensional rectangular enclosure which contains an emitting, absorbing, and isotropically scattering medium. The method is validated by comparing calculated radiative intensities with those of the reverse Monte Carlo method. Then, radiative intensity for different radiative problems is examined by DRESOR method. Comparing with reverse Monte Carlo method, DRESOR method shows much better time-efficiency. DRESOR method also shows an obvious advantage if radiative intensity with high directional resolution at many different boundary positions is required. To calculate radiative intensity with high directional resolution in a system where radiative source is confined to a small volume, both standard and reverse Monte Carlo method become inefficient, the results show that DRESOR method is still an efficient tool. The results given in this study demonstrate that DRESOR method is very advantageous in situations when high directional resolution is required.
机译:边界处具有高方向分辨率的辐射强度可以提供有关介质特性和温度的大量信息,这对于反分析非常有用。蒙特卡洛方法因其对复杂的辐射传递问题的灵活性而被广泛使用。在这项工作中,基于蒙特卡洛方法的能量散射或反射比分布(DRESOR)方法被开发出来,用于在包含发射,吸收和各向同性散射介质的三维矩形外壳中进行辐射强度计算。通过将计算的辐射强度与反向蒙特卡洛方法的辐射强度进行比较,验证了该方法的有效性。然后,通过DRESOR方法检查不同辐射问题的辐射强度。与反向蒙特卡洛方法相比,DRESOR方法具有更好的时间效率。如果需要在许多不同的边界位置处具有高方向分辨率的辐射强度,则DRESOR方法也显示出明显的优势。为了在辐射源被限制在小体积的系统中以高方向分辨率计算辐射强度,标准和反向蒙特卡洛方法都变得效率低下,结果表明DRESOR方法仍然是一种有效的工具。这项研究给出的结果表明,在需要高方向分辨率的情况下,DRESOR方法非常有利。

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  • 作者单位

    State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan 430074, Hubei, China ,Department of Biomedical Engineering, Huazhong University of Science and Technology, Wuhan 430074, Hubei, China;

    Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Tsinghua University, Beijing 100084, China;

    State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan 430074, Hubei, China;

    Mechanical and Aerospace Engineering Department, Florida Institute of Technology, Melbourne, FL 32901, USA;

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

    DRESOR method; radiative intensity; high directional resolution; high efficiency; three-dimensional;

    机译:DRESOR方法;辐射强度方向分辨率高;高效率;三维;

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