针对微尺度二维通道气体滑移流区的流动阻力和传热特性,采用滑移模型和SIMPLER数值进行了模拟分析。研究了定热流情况下不同Kn数时通道内压力、速度和温度场的分布以及流动阻力和换热的特性。数值分析结果表明随着Kn数的增大,速度滑移和温度跳跃的程度都增加,并且影响着流动阻力的下降,但两者对于换热系数的影响趋势是相反的:速度滑移有利于提高换热系数,而温度跳跃则降低换热系数,但总体上增加了微通道中的热阻。 Aimed at the flow resistance and heat transfer characteristics of micro-scale two-dimensional channel gas slip flow zone, the slip model and SIMPLER numerical simulation were carried out. The distributions of pressure, velocity and temperature fields, flow resistance and heat transfer characteristics of channels with different Kn numbers under constant heat flow were studied. Numerical analysis shows that with the increase of Kn, the velocity slip and temperature jump both increase and affect the decrease of flow resistance, but the trend of the two is opposite for the heat transfer coefficient. The velocity slip is beneficial to Increase the heat transfer coefficient, while temperature jump reduces the heat transfer coefficient, but generally increases the thermal resistance in the microchannel.