中文摘要：

【目的】探究次流道对细通道热沉换热性能的影响。【方法】使用CFD软件对常规直细通道热沉（CMS)、波状细通道热沉(WMS)、带次流道的波状细通道热沉（WMS-S)3种细通道热沉进行数值模拟和对比分析。【结果】WMS和WMS-S的传热系数々比CMS显著增加，低你数时，WMS-S比WMS的传热性能略有增加，且WMS-S的传热不可逆损失较小。【结论】在低沁数时，次流道能有效增强波状细通道热沉传热系数々，且能够减小传热不可逆造成的能量损失。

英文摘要：

【Objective】To investigate the effect of secondary passages on heat transfer mini-chan-nel heat sinks.【Methods】Numerical simulations were carried to study conventional min卜chan-nel heat sink?wave mini-channel heat sink?wave mini-channel heat sink with secondary passa-ges with CFD software.【Results】The results shows that the heat transfer coefficient k of WMS and WMS~S is significantly higher than that of CMS?and at low Re number the heat transfer performance of WMS_S is slightly higher than that of WMS^and the irreversible loss of WMS-S is smaller.【Conclusion】At low Re number,the secondary passages can effectively enhance the heat transfer coefficient k of the corrugated fine channel and reduce the energy loss caused by heat transfer irreversibility.