针对一种正弦波纹微通道,对比了不同微通道波幅和不同冷却液进口雷诺数对该波纹微通道内单相流动及换热特性的影响。结果表明：波幅对波纹微通道的流动和换热性能有很大影响,随着波幅的增加,流动压降会增加,摩擦因子会增加,所以流动阻力会增加。同时这也造成了流道内部流动速度更大且扰动更大,所以换热系数也会增加,微通道换热性能更好；雷诺数越大,流道内冷却剂的流速越大,流动的摩擦因子越大,压降也越大。同时雷诺数越大,流速越大的同时扰动也更大,换热更加充分,即换热系数更大,微通道内部温度分布也更加均匀；同时研究了通道波幅和雷诺数对流动换热的综合影响,获得波纹微通道内流-固-热耦合特性,从而为正弦波纹微通道的应用与优化设计提供一定理论支撑。

The effects of different microchannel amplitudes and different coolant inlet Re on the single-phase flow and heat transfer characteristics of a sinusoidal wavy microchannel were compared. The results show that the amplitude has a great influence on the flow and heat transfer performance of the corrugated microchannel, and with the increase of the amplitude, the flow pressure drop will increase, the friction factor will increase, so the flow resistance will increase. At the same time, this also causes the internal flow velocity of the runner to be larger and the disturbance is greater, so the heat transfer coefficient will also increase, and the heat transfer performance of the microchannel is better; The larger the Reynolds number, the greater the flow rate of the coolant in the flow channel, the greater the friction factor of the flow, and the greater the pressure drop. At the same time, the larger the Reynolds number, the larger the flow velocity and the greater the disturbance, the more complete the heat exchange, that is, the greater the heat transfer coefficient, and the more uniform temperature distribution inside the microchannel; At the same time, the comprehensive influence of channel amplitude and Reynolds number on flow heat transfer is studied, and the internal flow-solid-thermal coupling characteristics of corrugated microchannels are obtained, which provides some theoretical support for the application and optimization design of sinusoidal corrugated microchannels.