In this paper, a numerical simulation is performed to study the flow characteristics and heat transfer process when fluid flows past an oscillating cylinder. Computations are performed for Reynolds number (Re = 197, 248, 296) with different amplitude, frequency, and oscillating angle. The governing equations are numerically solved using the Finite Volume Method (FVM) based on the SIMPLE algorithm. The simulation is validated by comparing the results with the empirical formula, calculated using various Reynolds numbers (Re). The variation in amplitude has a significant effect on changing of the flow field, however, it is not so in the case of frequency. Results generally revealed that with the increase in amplitude and frequency, the heat transfer enhanced remarkably. The field synergy principle is used to analyze the influence mechanism of heat transfer enhancement. For different oscillating angles, the flow field displays different flow regimes and it was observed that the Nusselt number decreased initially and then increased. Furthermore, in most of the circumstances, the optimized angle was located at 0° or 90°.

本文通过数值模拟研究了流体流过摆动圆柱体时的流动特性和传热过程。计算雷诺数 (Re = 197, 248, 296) 具有不同的振幅、频率和振荡角。控制方程使用基于 SIMPLE 算法的有限体积法 (FVM) 进行数值求解。通过将结果与使用各种雷诺数 (Re) 计算的经验公式进行比较来验证模拟。振幅的变化对流场的变化有显着影响，但在频率的情况下则不然。结果表明，随着振幅和频率的增加，传热显着增强。利用场协同原理分析强化传热的影响机理。对于不同的振荡角，流场表现出不同的流态，观察到努塞尔数先减小后增大。此外，在大多数情况下，优化角度位于 0° 或 90°。