基于双向流固耦合方法，对流体通道内安插柔性元件的换热过程建立数值计算模型。分别计算了不同雷诺数下通道内安插刚性元件、传统柔性元件和新型三维柔性元件的速度场与温度场，调整新型柔性薄板的高度与通道高度之比进行多组计算，以验证新型三维柔性元件对换热效果的积极作用，并得到其最佳换热尺寸。结果表明：在换热的充分发展区域，三维柔性元件在扰流与避免后方蓄热等方面的效果优于刚性元件和传统柔性元件；当新型柔性薄板的高度与通道高度之比在13%~15%左右时强化换热效果最好；当Re为1 500时，换热的综合强化传热因子(PEC)可达1.25。

Based on the twoway fluidstructure interaction method, a numerical calculation model for the heat transfer process with flexible elements embedded in the fluid channel was established. The velocity and temperature fields of the rigid element, the traditional flexible element and the new threedimensional flexible element embedded in the channel at different Reynolds numbers were calculated respectively. The ratio of the height of the new flexible sheet to the channel height was adjusted for multiple groups of calculations to verify the positive role of the new threedimensional flexible element on the heat transfer effect and obtain its optimal heat transfer size. The results show that the threedimensional flexible element is better than the rigid element and the traditional flexible element in the fully developed area of heat transfer in terms of turbulence and avoiding rear heat storage; When the ratio of the height of the new flexible sheet to the channel height is about 13% to 15%, the enhanced heat transfer effect is the best; when Re is 1 500, the comprehensive enhanced heat transfer factor can reach 1.25.

TK124

国家自然科学基金（51806128）；淄博市张店区校城融合（2021JSCG0014）