| 朱礼1'2，林清宇1'2，冯振飞1'2，何荣伟1'2，刘鹏辉1'2.带次流道的周向平行弯曲细通道夹套熵产研究[J].轻工机械,2016,34(2): |
| 带次流道的周向平行弯曲细通道夹套熵产研究 |
| Entropy Generation Study of Circumferential Parallel Curved Mini-Channel Jacket with Secondary Passages |
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| DOI：10. 3969/j. issn. 1005 -2895. 2016. 02. 009 |
| 中文关键词: 细通道夹套 次流道 熵产率 数值模拟 |
| 英文关键词:mini-channel jacket secondary channels entropy generation rate numerical simulation |
| 基金项目:广西自然科学基金项目( 2014GXNSFBA118051)；广西石化资源加T及过程强化技术重点实验室主任基金
（2015 2012）；广西大学科研基金资助项目(XJ2130359) |
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| 中文摘要: |
| 为探究次流道对周向平行弯曲细通道夹套性能的影响，对有无次流道的周向平行弯曲细通道夹套内流体的层流
流动和传热特性进行了三维数值模拟分析。通过对比分析得到如下结果：次流道增加了夹套的平均Nu数；在低Re数
时，有次流道夹套的流阻系数f小于无次流道夹套，而当Re数大于1 050时，有次流道夹套的厂高于无次流道夹套；有次
流道夹套的传热不可逆的熵产率小于无次流道夹套，而2种夹套的流动不可逆的熵产率在低进口Re数时相差不大。次
流道强化了夹套的传热性能，且在低Re数时降低了夹套的流动阻力。 |
| 英文摘要: |
| A 3-D numerical study is carried out to investigate the laminar fluid flow and heat transfer performance of
circumferential parallel mini-channel jacket with/without secondary channels in order to explore the effect of secondary
channels on characteristics of different jackets. Some conclusions were obtained by analyzing contrastively numerical
simulate results of two different jackets. The secondary channels increased the mean Nu of jacket. The flow resistancef
values of jacket with secondary channels were less than ones of conventional jacket at low Re. When Re was greater than
1 050. the flow resistancef values of conventional jacket were smaller. The entropy generation rate due to heat transfer
irreversibility of jacket with secondary channels was farer more than the one of the conventional jacket. The entropy
generation rate due to fluid frictional irreversibility of different jackets with/without secondary channels were near at low
Re. The secondary channels enhanced the heat transfer performance of jacket and reduced the flow resistance at the same
time at low Re number. |
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