| 单个局部内热源和外部加热同时作用时封闭空腔内的自然对流换热 |
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| 引用本文： | 夏吉良,辛明道,张洪济. 单个局部内热源和外部加热同时作用时封闭空腔内的自然对流换热[J]. 重庆大学学报(自然科学版), 1990, 0(4) |
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| 作者姓名： | 夏吉良 辛明道 张洪济 |
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| 作者单位： | 重庆大学工程热物理研究所(夏吉良，辛明道)，重庆大学工程热物理研究所(张洪济) |
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| 摘 要： | 本文描述同时由一个局部内热源和外部加热引起的封闭空腔内非稳态、二维、层流自然对流换热的数值分析结果,研究了外部雷利数、局部内热源相对强度、位置及尺寸大小的影响。给出了速度场和温度分布,得到了热壁和冷壁的平均和局部努谢尔特数及平均努谢尔特数随时间的变化。
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| 关 键 词： | 自然对流 封闭空腔 局部内热源 外部加热 数值研究 |
NATURAL CONVECTION HEAT TRANSFER IN AN EXTERNALLY HEATED ENCLOSURE WITH A LOCAL INTERNAL HEAT SOURCE |
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| Xia Jiliang Xin Mingdao Zhang Hongji. NATURAL CONVECTION HEAT TRANSFER IN AN EXTERNALLY HEATED ENCLOSURE WITH A LOCAL INTERNAL HEAT SOURCE[J]. Journal of Chongqing University(Natural Science Edition), 1990, 0(4) |
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| Authors: | Xia Jiliang Xin Mingdao Zhang Hongji |
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| Affiliation: | Xia Jiliang Xin Mingdao Zhang Hongji |
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| Abstract: | Numerical study results of natural convection in an externallyheated enclosure containing a local internal heat source are described, the effects of external Rayleigh number, relative internsity of the local internal heat source, and position and size of the heat source on natural convection in an enclosure are systematically analysed, and the unsteady and steady flow and heat transfer performances are given. |
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| Keywords: | natural convection enclosure local internal heat source external heating. |
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