【摘要】 利用壁挂式柔性涡流发生器（FVG）、串列圆柱和非牛顿流体增强微通道的传热，采用任意拉格朗日-欧拉（ALE）格式的有限元法，对描述微通道中流固耦合的连续性方程、动量方程和能量方程进行求解。在双圆柱间距离固定的条件下，调整FVGs与圆柱之间的间距以及改变流体的幂律指数（n），研究对称壁挂式FVGs通道中幂律流体的流致振动现象及换热性能。与直微通道相比，当下游圆柱与柔性板间距离G_x=1.5、幂律指数n=1.2时，努塞尔数Nu增加了184%，热性能系数增加了45%。更多还原

【Abstract】 A wall-mounted flexible vortex generator(FVG),a tandem column,and a non-Newtonian fluid were utilized to enhance the heat transfer in a microchannel. The finite element method in arbitrary Lagrangian-Eulerian(ALE) format was used to solve the continuity, momentum, and energy equations describing the flow-solid coupling in microchannels. The flow-induced vibration behavior and heat transfer performance of a power-law fluid in a symmetric wall-mounted FVGs channel were investigated by adjusting the spacing between the FVGs and the columns,and varying the power-law exponent(n) of the fluid under the condition of a fixed distance between the two columns. When the distance between the downstream column and the flexible plate G_x=1.5 and the power-law index n=1.2, Nusselt number Nu increased by 184% and the thermal performance coefficient increased by 45% compared with the straight microchannel.更多还原