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首页> 外文期刊>International Journal of Heat and Mass Transfer >Closure for a plane fin heat sink with scale-roughened surfaces for volume averaging theory (VAT) based modeling
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Closure for a plane fin heat sink with scale-roughened surfaces for volume averaging theory (VAT) based modeling

机译：带有平面粗化表面的平面翅片散热器的闭合，用于基于体积平均理论（VAT）的建模

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摘要

The present paper describes an effort to obtain closure for a volume averaging theory (VAT) based model of a plane fin heat sink (PFHS) with scale-roughened surfaces by evaluating the closure terms for the model using computer fluid dynamics (CFD). Modeling a PFHS as porous media based on VAT, specific geometry can be accounted for in such a way that the details of the original structure can be replaced by their averaged counterparts and the VAT based governing equations can be efficiently solved for a wide range of parameters. To complete the VAT based model, proper closure is needed, which is related to a local friction factor and a heat transfer coefficient of a representative elementary volume (REV). The terms in the closure expressions are complex and sometimes relating experimental data to the closure terms is difficult. In this work we use CFD to obtain detailed solutions of flow and heat transfer through an element of the scale-roughened heat sink and use these results to evaluate the closure terms needed for a fast running VAT based code, which can then be used to solve the heat transfer characteristics of a higher level heat sink. The objective is to show how heat sinks can be modeled as a porous media based on volume averaging theory and how CFD can be used in place of a detailed, often formidable, experimental effort to obtain closure for a VAT based model.
机译：本文介绍了一种通过使用计算机流体动力学（CFD）评估模型的闭合项来获得基于体积平均理论（VAT）的带有平面粗化表面的平面翅片散热器（PFHS）模型的闭合的努力。将PFHS建模为基于VAT的多孔介质，可以通过以下方式考虑特定的几何形状：原始结构的细节可以用其平均对应物替换，并且可以针对各种参数有效地求解基于VAT的控制方程式。为了完成基于增值税的模型，需要适当的封闭，这与局部摩擦系数和代表性基本体积（REV）的传热系数有关。闭合表达式中的术语比较复杂，有时很难将实验数据与闭合术语相关联。在这项工作中，我们使用CFD来获得通过带有鳞片的散热器的元件进行的传热和传热的详细解决方案，并使用这些结果来评估快速运行的基于VAT的代码所需的关闭项，然后可以将其用于求解高级别散热器的传热特性。目的是展示如何基于体积平均理论将散热器建模为多孔介质，以及如何使用CFD代替详细的（通常是艰巨的）实验工作来获得基于增值税的模型的封闭性。

著录项

  • 来源
    《International Journal of Heat and Mass Transfer》 |2012年第26期|p.7677-7685|共9页
  • 作者

    Feng Zhou; George W. DeMoulin; David J. Geb; Ivan Catton;

  • 作者单位

    Department of Mechanical and Aerospace Engineering, University of California, Los Angeles, 48-121 Engineering IV, 420 Westwood Plaza, Los Angeles, CA 90095-1597, USA;

    Department of Mechanical and Aerospace Engineering, University of California, Los Angeles, CA USA;

    Department of Mechanical and Aerospace Engineering, University of California, Los Angeles, CA USA;

    Department of Mechanical and Aerospace Engineering, University of California, Los Angeles, CA 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

    scale roughened surface; heat sink; volume averaging theory; closure;

    机译：氧化皮粗糙的表面;散热器;体积平均理论;关闭;

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