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首页> 外文期刊>International Journal of Heat and Mass Transfer >Phemonenological model of heat transfer in an infiltrated granular bed at moderate Reynolds numbers
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Phemonenological model of heat transfer in an infiltrated granular bed at moderate Reynolds numbers

机译：雷诺数适中的渗透颗粒床传热的物相学模型

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摘要

A model of heat transfer in an infiltrated granular bed, which allows for most important special features of the process, viz., aniso-tropy of thermal properties and nonuniform distribution of the porosity and gas (liquid) velocity over the cross section, has been formulated. The concepts of the filtration boundary layer and viscous sublayer have been introduced and identified. Temperature fields and values of the coefficient of heat exchange between the bed and the wall of the tube bounding it have been calculated. The latter are generalized in the form of the dimensionless correlation which is compared with the available experimental data. It is shown that at Re_∞ ≤ 2000 the developed model describes the process of heat transfer in the granular bed well.
机译：已经建立了渗透颗粒床中传热的模型，该模型具有该过程的最重要的特殊功能，即热特性的各向异性以及横截面上孔隙率和气体（液体）速度的不均匀分布。制定。已经介绍并确定了过滤边界层和粘性子层的概念。已经计算出了温度场和床与包围它的管壁之间的热交换系数的值。后者以无量纲相关性的形式概括，并与可用的实验数据进行比较。结果表明，在Re_∞≤2000时，开发的模型描述了颗粒床井中的传热过程。

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