| CC型原表面回热器传热与流动数值模拟 |
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| 引用本文： | 聂嵩,曲伟.CC型原表面回热器传热与流动数值模拟[J].工程热物理学报,2004,25(6):989-991. |
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| 作者姓名： | 聂嵩 曲伟 |
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| 作者单位： | 中国科学院工程热物理研究所,北京,100080 |
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| 基金项目： | 863计划微型燃气轮机项目资助(No.2002AA503020) |
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| 摘 要： | 对CC型原表面回热器的主换热面附近流场和温度场进行了三维数值模拟。结果表明,传热的强化程度与流动阻力的大小取决于螺旋型二次流动的强弱,影响机理是螺旋型二次流动强烈影响流体的混合和边界层的发展。针对低雷诺数范围流动,通过比较不同结构尺度和换热面布置时传热和流动特性,对换热表面进行了设计优选。
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| 关 键 词： | CC型原表面 传热的强化 流动阻力 螺旋型二次流动 |
| 文章编号： | 0253-231X(2004)06-0989-03 |
| 修稿时间： | 2004年1月7日 |
NUMERICAL SIMULATION ON HEAT TRANSFER AND FLOW PERFORMANCES OF CC PRIMARY SURFACE RECUPERATOR |
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| NIE Song QU Wei.NUMERICAL SIMULATION ON HEAT TRANSFER AND FLOW PERFORMANCES OF CC PRIMARY SURFACE RECUPERATOR[J].Journal of Engineering Thermophysics,2004,25(6):989-991. |
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| Authors: | NIE Song QU Wei |
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| Abstract: | The heat transfer and three dimensional flow performances are numerically simulated on cross corrugated (CC) primary surface heat exchanger. The results demonstrate that the heat transfer and pressure loss depend on the helix secondary flow, its mechanisms are due to the working fluid mixing and the development restricting of boundary layers. By several low Reynolds numbers, the heat transfer and flow characteristics are compared for different structural scales and surface arrangements, and the recuperator is optimized and designed. |
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| Keywords: | C C primary surface enhanced heat transfer pressure loss helix secondary flow |
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