| 竖环形空腔内有均匀容积热源时自然对流换热的数值研究 |
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| 引用本文： | 魏琪,杨世铭.竖环形空腔内有均匀容积热源时自然对流换热的数值研究[J].工程热物理学报,1994(3). |
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| 作者姓名： | 魏琪 杨世铭 |
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| 作者单位： | 上海交通大学动力机械工程系 |
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| 摘 要： | 本文对竖环形空腔内有均匀容积热源、上下底面绝热、两侧壁有温差时的自然对流换热建立了数学模型，用有限差分法进行了数值求解，对半径比接近于１时的数值结果，同前人已有结果的吻合程度是令人满意的。对固定的外、内管半径比，给出了不同的ＲａＩ／ＲａＥ值、Ａ值下几种不同的流动模式，分析了沿热壁局部热流密度的变化规律。
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| 关 键 词： | 对流换热，自然对流，有限差分法，计算传热学 |
A NUMERICAL STUDY OF NATURAL CONVECTION HEAT TRANSFER IN VERTICAL ANNULUS WITH UNIFORMLY DISTRIBUTED VOLUMETRIC HEAT SOURCES |
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| Wei Qi, Yang Shiming.A NUMERICAL STUDY OF NATURAL CONVECTION HEAT TRANSFER IN VERTICAL ANNULUS WITH UNIFORMLY DISTRIBUTED VOLUMETRIC HEAT SOURCES[J].Journal of Engineering Thermophysics,1994(3). |
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| Authors: | Wei Qi Yang Shiming |
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| Institution: | Shanghai Jiaotong University |
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| Abstract: | Numerical calculations for natural convection heat transfer in vertical annulus with uniformly distributed volumetric heat sources were carried out in this paper. For cases with radius ratio near one, numerical results were in accord with the results for rectangular cavities in the literature. The physical features of the annulus problem such as the effects of RaI/RaE and of A were discussed in detail. |
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| Keywords: | convection heat transfer natural convection finite difference methods numerical heat transfer |
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