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首页> 外文期刊>Journal of Heat Transfer >Definition And Evaluation Of Mean Beam Lengths For Applications In Multidimensional Radiative Heat Transfer: A Mathematically Self-consistent Approach
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Definition And Evaluation Of Mean Beam Lengths For Applications In Multidimensional Radiative Heat Transfer: A Mathematically Self-consistent Approach

机译:多维辐射传热中平均束长的定义和评估:一种数学自洽方法

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摘要

A set of mathematically self-consistent definitions of mean beam length is introduced to account for surface-surface, surface-volume, and volume-volume radiative exchanges in general three-dimensional inhomogeneous medium. Based on these definitions, the generic exchange factor (GEF) formulated by the recently introduced multiple-absorption-coefficient-zonal-method (MACZM) can be written in an equivalent one-dimensional form. The functional behavior of the proposed mean beam lengths is shown to be readily correlated by either simple algebraic relations or neural network based correlations. They can be implemented directly with MACZM in general computational code to account for the radiation effect in complex three-dimensional systems. In addition, these definitions of mean beam length can also be used to assess the accuracy of the conventional mean beam length concept currently used by the practicing engineering community.
机译:引入了一组平均射束长度的数学上自洽的定义,以解决一般三维非均匀介质中的表面-表面,表面-体积和体积-体积辐射交换。基于这些定义,可以用等效的一维形式编写由最近引入的多重吸收系数区域方法(MACZM)制定的通用交换因子(GEF)。通过简单的代数关系或基于神经网络的相关性,可以很容易地证明所建议的平均光束长度的功能特性。它们可以用MACZM直接在通用计算代码中实现,以解决复杂三维系统中的辐射效应。另外,平均光束长度的这些定义也可以用于评估实践的工程界当前使用的常规平均光束长度概念的准确性。

著录项

  • 来源
    《Journal of Heat Transfer》 |2008年第11期|148-152|共5页
  • 作者

    Walter W; Yuen;

  • 作者单位
  • 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

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