| 杆支撑换热器壳侧单元流道的三维模拟 |
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| 引用本文： | 吴金星,董其伍,刘敏珊,魏新利.杆支撑换热器壳侧单元流道的三维模拟[J].上海大学学报(英文版),2006,10(4):362-365. |
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| 作者姓名： | 吴金星 董其伍 刘敏珊 魏新利 |
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| 作者单位： | School of Chemical Engineering Zhengzhou University Zhengzhou 450002 P.R. China，School of Mechanical and Power Engineering East China University of Science and Technology Shanghai 200237 P.R.China，School of Chemical Engineering Zhengzhou University Zhengzhou 450002 P.R. China，School of Mechanical and Power Engineering East China University of Science and Technology Shanghai 200237 P.R.China，School of Chemical Engineering Zhengzhou University Zhengzhou 450002 P.R. China，School of Chemical Engineering Zhengzhou University Zhengzhou 450002 P.R. China |
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| 摘 要： | 1 Introduction The traditional segmental baffle heat exchangers(SHE) can be si mply manufactured and run reliably,but they are mainly suitable for the situation of lowerflow velocity. When fluid velocity becomes higher inthe shell side ,the pressure dropi…
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| 关 键 词： | 换热器 壳程 数值模拟 单元导管 |
| 文章编号： | 1007-6417（2006）04-0362-04 |
| 收稿时间： | 2004-12-25 |
| 修稿时间： | 2005-06-20 |
3D simulation on the unit duct in the shell side of the ROD baffle heat exchanger |
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| Jin-xing Wu Ph. D.,Qi-wu Dong,Min-shan Liu,Xin-li Wei.3D simulation on the unit duct in the shell side of the ROD baffle heat exchanger[J].Journal of Shanghai University(English Edition),2006,10(4):362-365. |
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| Authors: | Jin-xing Wu Ph D Qi-wu Dong Min-shan Liu Xin-li Wei |
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| Abstract: | The ROD baffle heat exchanger can slightly enhance the shell side heat transfer coefficient with the significant reduction of pressure loss due to the shell side fluid flowing longitudinally through tube bundle, which leads to the reduction of the manufacture and running cost and in some cases to the dimensions reduction of the heat exchangers. Because of the complexities of fluid dynamics equations and the structure of heat exchangers, few theoretical researches have been accomplished to specify the shell side characteristics of the ROD baffle heat exchanger. A unit duct model in the shell side of the longitudinal flow type heat exchanger has been deve- loped based on suitable simplification. A numerical analysis on shell side of the ROD baffle heat exchanger has been carried out at constant wall temperature to obtain the characteristics of heat transfer and pressure drop. The numerical results show that the ROD baffles placed vertically and horizontally in the unit duct continue to shear and comminute the streamline flow when the fluid crosses over the ROD-baffles, and change the fluid flow directions, and then the continuity and stability of the fluid are destroyed. The effect of disturbing flow can promote fluid turbulent intensity and effectively enhance heat transfer. The numerical analyses can provide the theoretical bases for optimizing the structure of ROD baffle heat exchanger and improving its performance. |
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| Keywords: | ROD baffle heat exchanger unit duct numerical simulation shell side characteristics |
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