| 天然气催化反应壁面传热传质的数值研究 |
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| 引用本文： | 许考,刘中良,何洪,康天放,马重芳.天然气催化反应壁面传热传质的数值研究[J].工程热物理学报,2006,27(Z2):49-52. |
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| 作者姓名： | 许考 刘中良 何洪 康天放 马重芳 |
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| 作者单位： | 传热强化与过程节能教育部重点实验室及传热与能源利用北京市重点实验室,北京工业大学,北京,100022 |
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| 基金项目： | 北京市重点实验室基金;北京市自然科学基金 |
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| 摘 要： | 应用二维数学模型研究天然气催化燃烧壁面反应及载体气固界面上热质传递与流动耦合的现象。通过改变载体通道入口混合气体(天然气与空气)的温度、质量分数及壁面上反应的条件来评价努塞尔数和舍伍德数。模拟结果表明,努塞尔数和舍伍德数并不单独取决于燃料质量分数及壁面条件,而取决于壁面的反应速率。模拟同时表明,进口的温度对通道壁面传质影响最大,其它影响较小。
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| 关 键 词： | 催化反应 壁面条件 传热传质 天然气 |
| 文章编号： | 0253-231X(2006)Suppl.2-0049-04 |
| 修稿时间： | 2006年3月21日 |
NUMERICAL STUDY ON HEAT AND MASS TRANSFER ON THE SURFACE WITH CATALYTIC REACTION |
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| XU Kao,LIU Zhong-Liang,HE Hong,KANG Tian-Fang,MA Chong-Fang.NUMERICAL STUDY ON HEAT AND MASS TRANSFER ON THE SURFACE WITH CATALYTIC REACTION[J].Journal of Engineering Thermophysics,2006,27(Z2):49-52. |
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| Authors: | XU Kao LIU Zhong-Liang HE Hong KANG Tian-Fang MA Chong-Fang |
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| Abstract: | A two-dimension mathematic model has been developed in order to study the effect of heat and mass transfer coupled with flow on the surface of with catalytic reaction. Nu and Sh numbers are appraised by the changes of the temperature of the mixtures (natural gas and air), the mass fraction of natural gas and the conditions outside wall. The numerical results show Nu and Sh numbers independently do not depend on mass fraction and surface conditions, but on the reaction rate on the internal surface. Meanwhile, the results also reveal the inlet temperature intensely influences mass transfer in the channel and the others do not influence mass transfer. |
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| Keywords: | catalytic reaction wall condition heat and mass transfer natural gas |
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