上海交通大学学报(自然版) ›› 2016, Vol. 50 ›› Issue (04): 557-562.
李鹏程a,孙志坚a,汤舟a,俞自涛a,b,胡亚才a
收稿日期:
2015-03-15
出版日期:
2016-04-28
发布日期:
2016-04-28
基金资助:
LI Pengchenga,SUN Zhijiana,TANG Zhoua,YU Zitaoa,b,HU Yacaia
Received:
2015-03-15
Online:
2016-04-28
Published:
2016-04-28
摘要: 摘要: 利用数值模拟方法对一种高黏度的油类介质在6种不同布置交错角度(0°,30°, 45°,60°,75°,90°)的扇形内翅片石墨换热管中层流的强化传热和流动规律进行了研究.结果表明,扇形内翅片的强化换热效果明显.与无翅片的石墨换热管相比,6种布置角度的扇形内翅片对流换热系数分别增大22.69%,42.49%,62.28%,63.44%,65.47%,66.47%.就流动性能而言,扇形内翅片的石墨管6种布置角度下的阻力分别增大了191.88%,252.01%,333.10%,364.33%,385.51%,400.43%.为了明确石墨管内添加扇形内翅片后的强化传热效应,采用了换热性能评价指标(PEC)对6种布置角度进行了评价研究,结果显示45°布置角度时PEC评价准则数的平均值达到最大,为1.265,说明布置角度为45°时强化换热效果最理想.
中图分类号:
李鹏程a,孙志坚a,汤舟a,俞自涛a,b,胡亚才a. 扇形内翅片石墨管层流强化传热性能[J]. 上海交通大学学报(自然版), 2016, 50(04): 557-562.
LI Pengchenga,SUN Zhijiana,TANG Zhoua,YU Zitaoa,b,HU Yacaia. Laminar Heat Transfer Enhancement of Graphite Tube with Internal FanShaped Fins[J]. Journal of Shanghai Jiaotong University, 2016, 50(04): 557-562.
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