| 贝克利数对圆管流道交变流动传热的影响分析 |
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| 引用本文： | 汤珂,唐文涛,张玙,金滔,林小钢,雷田. 贝克利数对圆管流道交变流动传热的影响分析[J]. 低温工程, 2011, 0(3): 1-5 |
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| 作者姓名： | 汤珂 唐文涛 张玙 金滔 林小钢 雷田 |
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| 作者单位： | 浙江大学制冷与低温研究所;中国科学院理化技术研究所低温工程学重点实验室; |
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| 基金项目： | 国家自然科学基金(50890182); 中国科学院低温工程学重点实验室开放课题资助项目 |
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| 摘 要： | 从可压缩黏性流体的一般控制方程出发,通过数值模拟,研究管内可压缩层流交变流动传热现象,重点关注贝克利数对于传热的影响.采用离散傅立叶级数的形式表征管内交变流动传热特性,研究表明采用五阶级数拟合值与原始数据的相对误差可小于10%.给出了贝克利数为2和300时,一个周期内交变流动传热过程的计算结果,并进行了对比分析.根据模...
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| 关 键 词： | 交变流动 传热 贝克利数 努塞尔数 |
Impact of Peclet number on heat transfer of oscillatory flow in circular channel |
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| Tang Ke,Tang Wentao,Zhang Yu,Jin Tao,Lin Xiaogang,Lei Tian. Impact of Peclet number on heat transfer of oscillatory flow in circular channel[J]. Cryogenics, 2011, 0(3): 1-5 |
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| Authors: | Tang Ke Tang Wentao Zhang Yu Jin Tao Lin Xiaogang Lei Tian |
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| Affiliation: | Tang Ke1,2 Tang Wentao1 Zhang Yu1 Jin Tao1 Lin Xiaogang1 Lei Tian1(1Institute of Refrigeration and Cryogenics,Zhejiang University,Hangzhou 310027,China)(2Key Laboratory of Cryogenics,Technical Institute of Physics and Chemistry,Chinese Academy of Sciences,Beijing 100190,China) |
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| Abstract: | Numerical computations towards compressible oscillatory flow in a circular channel were conducted,the emphasis was focused on the impact of Peclet number on the heat transfer.Multiple-order Nusselt numbers were used to describe the heat transfer characteristics.The computed results indicate that the relative deviation between the fitted data and the raw data was less than 10%,when the fifth-order series was used.The temperatures and heat fluxes in an oscillation period for Peω=2 and Peω=300 were compared.The dependence of time-averaged Nusselt number(i.e.,the 0th Nusselt number) on Peclet number is also presented and analyzed. |
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| Keywords: | oscillatory flow heat transfer Peclet number Nusselt number |
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