| 板翅式换热器翅片通道中流体流动与传热的计算流体力学模拟 |
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| 引用本文： | 祝银海,厉彦忠.板翅式换热器翅片通道中流体流动与传热的计算流体力学模拟[J].化工学报,2006,57(5):1102-1106. |
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| 作者姓名： | 祝银海 厉彦忠 |
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| 作者单位： | 西安交通大学能源与动力工程学院，陕西 西安 710049 |
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| 摘 要： | 针对平直形和锯齿形两种不同翅片类型，利用计算流体动力学(CFD)软件FLUENT对板翅式换热器的微小通道进行了模拟，得出了通道中流体的流动与传热特性.计算结果表明，在相同情况下，平直形和锯齿形翅片中冷热流体的局部传热系数的最大值都出现在入口处;在锯齿形翅片的相邻2个锯齿的交错面上，流体的局部传热系数和压力存在突变，流体的边界层厚度要薄于在平直形翅片中的厚度，流体的局部换热系数要和压损大于其在平直形翅片中的值.
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| 关 键 词： | 计算流体力学模拟 板翅式换热器 锯齿形翅片 平直形翅片 |
| 文章编号： | 0438-1157（2006）05-1102-05 |
| 收稿时间： | 04 22 2005 12:00AM |
| 修稿时间： | 2005-04-222005-07-05 |
CFD simulation of fluid flow and heat transfer in channels of plate-fin heat exchangers |
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| ZHU Yinhai,LI Yanzhong.CFD simulation of fluid flow and heat transfer in channels of plate-fin heat exchangers[J].Journal of Chemical Industry and Engineering(China),2006,57(5):1102-1106. |
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| Authors: | ZHU Yinhai LI Yanzhong |
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| Abstract: | A computational fluid dynamics (CFD) program FLUENT was used to predict the fluid flow and heat transfer in channels of the plate-fin heat exchangers with plain fins and serrated fins.The calculation results indicated that the local coefficients of heat transfer for both cold and hot fluids in the heat exchangers with either plain fins or serrated fins had the maximum values at the entrance.The local coefficients of heat transfer and local pressure values for both cold and hot fluids changed abruptly at each staggered face of serrated fins.The thickness of boundary layer on serrated fins was thinner than that on plain fins.Both the local coefficient of heat transfer and pressure drops of fluids in the heat exchanger with serrated fins were larger than those in the heat exchanger with plain fins. |
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| Keywords: | CFD simulation plate-fin heat exchanger serrated fin plain fin |
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