带次流道的波状细通道热沉熵产分析

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k比CMS显著增加,低Re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Re数时,次流道能有效增强波状细通道热沉传热系数k,且能够减小传热不可逆造成的能量损失.%[Objective]To investigate the effect of secondary passages on heat transfer mini-channel heat sinks.[Methods]Numerical simulations were carried to study conventional mini-channel heat sink,wave mini-channel heat sink,wave mini-channel heat sink with secondary passages 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.