The fluid-induced vibration heat transfer enhancement technology has great potential, because it can effectively improve the heat transfer efficiency without consuming additional energy. A reasonable design of the elastic heat exchange tube bundle structure is the key to the engineering application of this technology. In this paper, the effects of flow velocity and the center distance $L$ on the characteristics of vortex- induced vibration heat transfer in side-by-side double circular tubes are studied. We demonstrate that, when the center distance $L$ is no more than $3d$ (outer diameter), the interference effect of the flowfield around the two tubes is greater, and the amplitude of the double tube is small. However, with the increase of $L$, the flowfield interference decreases. Within the scope of this paper, two modes of vibration are obtained: in-phase vibration and out-of-phase vibration. When $v=0.1\mathrm{m}/\mathrm{s}$ and $L\ge 3d$, the fluid vortex-induced elastic supported side-by-side double circular tubes’ vibration can enhance heat transfer. Especially, when $L=4d$, the heat transfer enhancement effect is the strongest, reaching 14.5%. However, when $L\le 3d$, the heat transfer enhancement effect is not obvious. The research on the heat transfer characteristics of fluid flowing around the static double tube shows that when the distance is small, the flow velocity around the static tubes is larger, resulting in a higher surface average heat transfer coefficient, and as the distance increases, the heat transfer coefficient decreases.

流体诱发振动传热增强技术具有巨大的潜力，因为它可以有效地提高传热效率，而无需消耗额外的能量。弹性换热管束结构的合理设计是该技术工程应用的关键。本文中，流速和中心距的影响$\mathrm{大号}$对并排双圆管中的涡激振动传热特性进行了研究。我们证明，当中心距$\mathrm{大号}$ 不超过 $3d$（外径），两根管​​子周围的流场的干扰效果更大，而双管子的幅度小。但是，随着$\mathrm{大号}$，流场干扰减少。在本文的范围内，获得了两种振动模式：同相振动和异相振动。什么时候$v=0.1\mathrm{米}/\mathrm{s}$ 和 $\mathrm{大号}\ge 3d$，流体涡流诱导的弹性支撑并排双圆管的振动可以增强热传递。特别是当$\mathrm{大号}=4d$，传热增强效果最强，达到14.5％。但是，当$\mathrm{大号}\le 3d$，传热增强效果不明显。对在静态双管周围流动的流体的传热特性的研究表明，当距离较小时，静态管周围的流速较大，从而导致较高的表面平均传热系数，并且随着距离的增加，表面的平均传热系数也随之增大。传热系数降低。