The study of fluid-induced vibration of helical elastic coiled tubes to enhance heat transfer is very important for engineering practice and energy saving. Fluid-induced vibration and enhanced heat transfer of a helical elastic coiled tube heat exchanger were analyzed based on its finite element model, by using a two-way fluid–solid coupling method. Vibration response of the helical elastic coiled tubes, heat transfer coefficient per unit volume, and Nusselt number in vibration and nonvibration were studied at different entrance velocities and winding numbers. The results illustrate that there are a lot of vortexes in the heat exchanger and around the helical elastic coiled tubes. In the range of the entrance velocity $0.3–0.7\mathrm{m}/\mathrm{s}$, the vibration frequency is constant, whereas the vibration amplitude increases, and the tube vibration enhances the heat transfer of the helical elastic coiled tubes by 0.38%, 0.89%, 1.93%, and 13.65%, respectively. As the winding number increases from 5 to 9, it has a greater effect on the vibration amplitude, and the tube vibration enhances the heat transfer of the helical elastic coiled tubes by 1.93%, 3.39%, and 3.59%, respectively.

对螺旋弹性盘管的流体振动进行研究以增强热传递对工程实践和节能非常重要。基于有限元模型，采用双向流固耦合方法分析了螺旋弹性盘管式换热器的流体诱导振动和增强​​的热传递。研究了螺旋弹性盘管在不同的入口速度和缠绕数下的振动响应，单位体积的传热系数以及振动和非振动中的努塞尔数。结果表明，在换热器中以及在螺旋弹性盘管周围存在许多涡流。在入口速度范围内$0.3\mathrm{--}0.7\mathrm{米}/\mathrm{s}$，振动频率是恒定的，而振动幅度增加，并且管振动分别使螺旋弹性盘管的传热分别提高了0.38％，0.89％，1.93％和13.65％。随着绕组数从5增加到9，它对振动幅度的影响更大，并且管振动分别使螺旋弹性盘管的热传递分别提高了1.93％，3.39％和3.59％。