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首页> 外文会议>The 2001 ASME International Mechanical Engineering Congress and Exposition, 2001, Nov 11-16, 2001, New York, New York >RADIATION AND INDUCED CONVECTION IN VENTILATED ENCLOSURES
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RADIATION AND INDUCED CONVECTION IN VENTILATED ENCLOSURES

机译：通风外壳中的辐射和对流

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The paper presents a thorough numerical investigation of the effects of radiation and induced convection inside an enclosure. The objective is to assess the interaction of these two mechanisms in real size buildings with heating elements inside. As a first step, a small size model is studied. The investigation is performed for closed and partially open enclosures. Temperature distributions and flow fields inside the enclosure are obtained for different values of the heat-transfer parameters, like emissivity of the hot element and the walls, and the thermal resistance of the walls. It is shown that radiation can considerably affect the air flow inside the enclosure. Real-size structures, where turbulent flow prevails, are compared to the model. Three-dimensional simulations are performed. The influence of grid refinement on the results is discussed. The results obtained for a uniform grid are compared to those for a non-uniform one, having higher density at the boundaries. Special attention is paid to the radiation modeling, where the influence of angular discretization is important.
机译：本文对外壳内部的辐射和对流引起的影响进行了全面的数值研究。目的是评估实际尺寸建筑物中内部加热元件的这两种机制之间的相互作用。第一步，研究小型模型。对封闭和部分打开的机柜执行调查。对于热传递参数的不同值（例如，热元件和壁的发射率以及壁的热阻），可以获得外壳内部的温度分布和流场。结果表明，辐射会严重影响外壳内部的空气流动。将存在湍流的实际尺寸结构与模型进行比较。进行三维模拟。讨论了网格细化对结果的影响。将均匀网格的结果与不均匀网格的结果进行比较，该结果在边界处具有更高的密度。特别要注意辐射建模，其中角离散化的影响很重要。

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