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首页> 外文期刊>Journal of Heat Transfer >Immersed Boundary Method for Radiative Heat Transfer Problems in Nongray Media With Complex Internal and External Boundaries
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Immersed Boundary Method for Radiative Heat Transfer Problems in Nongray Media With Complex Internal and External Boundaries

机译：具有内外边界复杂的Nongray介质中辐射传热问题的浸入边界方法

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摘要

The immersed boundary method (IBM) is gaining attention in the computational fluid dynamics but its applications in the field of a conjugated radiative-conductive or radiative-convective heat transfer seem limited. Therefore, the paper presents extension of this method to heat transfer problems dominated by thermal radiation in a nongray medium. The present model enables simulation of heat and fluid flows in a domain with complex stationary or moving internal and external boundaries on a fixed Cartesian grid (FCG) by applying the finite volume method. The special attention is paid to modeling thermal radiation and optical phenomena at highly curved, opaque, or transparent boundaries which confine the computational domain or separate zones of different thermo-physical and optical properties, e.g., different values of a refractive index. The model is limited to a 2D planar or axisymmetric spaces. Detailed verification procedure proves accuracy and correctness of the developed model and shows its potential application field. The model may be used for simulations of a conjugated radiative-conductive or radiative-convective heat transfer in a nongray medium in a complex domain with opaque or transparent curved internal or external boundaries without unstructured or body fitted mesh generation.
机译：浸入边界方法（IBM）在计算流体动力学方面引起了人们的关注，但在共轭辐射传导或辐射对流换热领域的应用似乎受到限制。因此，本文提出了将该方法扩展到在非灰色介质中以热辐射为主的传热问题。通过应用有限体积方法，本模型能够在固定的笛卡尔网格（FCG）上模拟具有复杂的固定或移动内部和外部边界的域中的热和流体流动。要特别注意在高度弯曲，不透明或透明的边界上对热辐射和光学现象进行建模，这些边界会限制计算域或具有不同热物理和光学特性（例如，不同的折射率值）的单独区域。该模型限于二维平面或轴对称空间。详细的验证程序证明了所开发模型的准确性和正确性，并显示了其潜在的应用领域。该模型可用于模拟非灰色介质在具有不透明或透明弯曲的内部或外部边界的复杂域中的非灰色介质中的共轭辐射传导或辐射对流换热，而不会生成非结构化或人体拟合的网格。

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  • 来源
    《Journal of Heat Transfer》 |2017年第2期|022702.1-022702.13|共13页
  • 作者

    Piotr Lapka; Piotr Furmanski;

  • 作者单位

    Institute of Heat Engineering, Warsaw University of Technology, Nowowiejska Street 21/25, Warsaw 00-665, Poland;

    Institute of Heat Engineering, Warsaw University of Technology, Nowowiejska Street 21/25, Warsaw 00-665, Poland;

  • 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
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