CIESC Journal ›› 2005, Vol. 56 ›› Issue (11): 2065-2068.
Previous Articles Next Articles
WU Feng;LIN Mei;TIAN Lin;WANG Qiuwang;LUO Laiqin
Online:
Published:
吴峰;林梅;田林;王秋旺;罗来勤
Abstract: The fluid flow and heat transfer characteristics of internal longitudinal finned tube were investigated experimentally,and were compared with those of circular annulus tube. It was shown that the internally longitudinal finned tube had better heat transfer performance than the circular annulus tube with increase of pressure drop simultaneously.Numerical results based on the realized k-ε turbulence model agreed well with the experimental results.It was found that there existed a critical Reynolds number, that is, when Reynolds number was less than the critical value, the Nusselt number of internally longitudinal finned tube was smaller than that of circular annulus tube in laminar flow.In addition,the Reynolds number for the transition from laminar to turbulent flow was greatly decreased due to the existence of internal fins.
Key words: 内翅片管, 强制对流, 临界Reynolds数
关键词: 内翅片管, 强制对流, 临界Reynolds数
WU Feng, LIN Mei, TIAN Lin, WANG Qiuwang, LUO Laiqin. Experimental study and numerical simulation on convective heat transfer and pressure drop of internally longitudinal finned tube[J]. CIESC Journal, 2005, 56(11): 2065-2068.
吴峰, 林梅, 田林, 王秋旺, 罗来勤. 纵向内翅片管对流换热特性的实验研究及数值模拟 [J]. 化工学报, 2005, 56(11): 2065-2068.
0 / / Recommend
Add to citation manager EndNote|Ris|BibTeX
URL: https://hgxb.cip.com.cn/EN/
https://hgxb.cip.com.cn/EN/Y2005/V56/I11/2065
Entropy generation analysis and performance evaluation of heat transfer enhancement through internal flow
Convective heat transfer and pressure drop of annular tubes with three different internal longitudinal fins