Abstract In the present study, both heat transfer and pressure drop was studied numerically for static round tube and cosine oscillating tube with finite volume method. The effect of dimensionless amplitude and frequency on heat transfer and pressure drop was also investigated for Reynolds number changing from 6170 to 14,000. Under the influence of cosine oscillation, the heat transfer and pressure drop is periodically changing and the frequency for heat transfer and pressure is half of that for cosine oscillation motion. Heat transfer was enhanced by cosine oscillation and increased by 1.9% compared to static tube for Re = 6140. Meanwhile, heat transfer increased by 35% as dimensionless amplitude increased from 1 to 10. While cosine rotation also caused larger pressure drop and the pressure drop for cosine oscillating tube is 3.01% that of static tube. The pressure drop is proportional to dimensionless amplitude and frequency. However, heat transfer first reduce and then increase with increase in frequency.

中文翻译：

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周期性余弦振荡内管传热流动数值研究

摘要 本研究采用有限体积法对静态圆管和余弦振荡管的传热和压降进行了数值研究。还研究了雷诺数从 6170 变为 14,000 时无量纲振幅和频率对传热和压降的影响。在余弦振荡的影响下，传热和压降呈周期性变化，传热和压力的频率是余弦振荡运动频率的一半。余弦振荡增强了传热，与 Re = 6140 的静态管相比，传热增加了 1.9%。同时，随着无量纲振幅从 1 增加到 10，传热增加了 35%。而余弦旋转也引起了更大的压降和压降余弦振荡管为3。静态管的 01%。压降与无量纲振幅和频率成正比。但是，随着频率的增加，传热先减少然后增加。