| 缩放管内自旋流强化传热的场协同分析 |
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| 引用本文： | 洪蒙纳,邓先和. 缩放管内自旋流强化传热的场协同分析[J]. 石油化工设备, 2011, 40(3): 1-5 |
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| 作者姓名： | 洪蒙纳 邓先和 |
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| 作者单位： | 1. 华南理工大学,教育部传热强化与过程节能重点实验室,广东,广州,510640;广东省节能中心,广东,广州,510030
2. 华南理工大学,教育部传热强化与过程节能重点实验室,广东,广州,510640 |
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| 摘 要： | 建立了周期性单元模型,采用数值模拟方法分析了缩放管内带衰减性自旋流的三维湍流流动中的场协同现象,研究轴向不同位置速度场与温度场的演变过程。结果表明,切向速度对强化传热影响很大,自旋流纵向涡使轴向速度和切向速度在同一数量级;自旋流改善了湍流中心区与边壁区流体速度场与温度梯度场的协同程度,使传热得到了强化。
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| 关 键 词： | 缩放管 自旋流 强化传热 场协同 |
Field Synergy on Heat Transfer Enhancement of Converging-diverging Tube with Self-sustaining Swirl Flow |
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| HONG Meng-na,DENG Xian-he. Field Synergy on Heat Transfer Enhancement of Converging-diverging Tube with Self-sustaining Swirl Flow[J]. Petro-Chemical Equipment, 2011, 40(3): 1-5 |
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| Authors: | HONG Meng-na DENG Xian-he |
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| Affiliation: | HONG Meng-na1,2,DENG Xian-he1(1.Key Laboratory of Enhanced Heat Transfer and Energy Conservation,Ministry of Education,South China University of Technology,Guangzhou 510640,China,2.Guangdong Provincial Energy Conservation Center,Guangzhou 510030,China) |
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| Abstract: | A periodic unit model was developed and field synergy phenomenon in 3D turbulent flow was numerically analyzed in details in a converging-diverging tube with self-sustaining swirl flow,showing the evolution of velocity field and temperature field at different axial cross sections.The results showed that radial velocity had profound effects in heat transfer enhancement and the radial velocity and axial velocity remained at the same scalar by the self-sustaining swirl flow.Also the synergy of velocity field a... |
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| Keywords: | converging-diverging tube self-sustaining swirl flow heat transfer enhancement field synergy |
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