In this paper, a curved wavy channel was proposed to further enhance the thermal performance of the conventional wavy channel. A three-dimensional model of the curved wavy channel was established with defining the overall curvature. The flow behavior and heat transfer in the wavy and curved wavy channels were numerically investigated under various wave amplitudes. The mechanism behind the observed phenomena was revealed by analyzing the synergy between velocity and temperature fields. The results indicated that the Nusselt numbers in curved wavy channels with amplitudes of 0.40 mm and 0.80 mm can be raised by 44.3% and 15.3% compared to those in conventional wavy channels. The parametric study showed that the flow resistance is more sensitive to the wavelength. For a given amplitude, curved wavy channels always show a better field synergy than conventional wavy channels. In addition, an inferior field synergy was observed near the suction side in both types of wavy channels, which indicates that the purposive improvement needs to apply to these locations. This study also found that the field synergy angle has limitations in characterizing the heat transfer intensity in the channel with small wavelengths. This is because that extremely chaotic flow patterns caused by small wavelengths result in a negative dot product of temperature gradient and velocity over a large area.

在本文中，提出了一种弯曲的波浪形通道，以进一步提高传统波浪形通道的热性能。建立了弯曲波浪通道的三维模型，定义了整体曲率。在不同波幅下对波浪形和弯曲波浪形通道中的流动行为和传热进行了数值研究。通过分析速度场和温度场之间的协同作用，揭示了观察到的现象背后的机制。结果表明，振幅为0.40 mm和0.80 mm的弯曲波浪通道的努塞尔数比传统波浪通道的努塞尔数分别提高了44.3%和15.3%。参数研究表明，流动阻力对波长更敏感。对于给定的振幅，弯曲的波浪形通道总是比传统的波浪形通道显示出更好的场协同作用。此外，在两种类型的波浪形通道的吸力侧附近都观察到了较差的场协同作用，这表明需要对这些位置进行有目的的改进。本研究还发现，场协同角在表征小波长通道中的传热强度方面存在局限性。这是因为由小波长引起的极度混乱的流动模式会导致大面积温度梯度和速度的负点积。该研究还发现，场协同角在表征小波长通道中的传热强度方面存在局限性。这是因为由小波长引起的极度混乱的流动模式会导致大面积温度梯度和速度的负点积。该研究还发现，场协同角在表征小波长通道中的传热强度方面存在局限性。这是因为由小波长引起的极度混乱的流动模式会导致大面积温度梯度和速度的负点积。