3D Numerical study on the flow topology and heat transfer characteristics of turbulent forced convection in a spirally corrugated tube

被引：35

作者：

Promthaisong, P. ^{[1
]}

Jedsadaratanachai, W. ^{[1
]}

Eiamsa-ard, S. ^{[2
]}

机构：

[1] King Mongkuts Inst Technol Ladkrabang, Fac Engn, Dept Mech Engn, Bangkok, Thailand

[2] Mahanakorn Univ Technol, Fac Engn, Dept Mech Engn, Bangkok 10530, Thailand

来源：

NUMERICAL HEAT TRANSFER PART A-APPLICATIONS | 2016年 / 69卷 / 06期

关键词：

TRANSFER ENHANCEMENT; OPTIMIZATION;

D O I：

10.1080/10407782.2015.1069670

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

This paper presents a numerical analysis on flow configurations and heat transfer characteristics of turbulent forced convection in spirally corrugated tubes. The influences of corrugation depth (DR = 0.02-0.16), pitch ratio (PR = 0.10-1.00), and Reynolds number (Re = 5,000-20,000) on flow structure and heat transfer characteristics are described. Comparisons between the full length and periodic domains are also reported. The results show that spirally corrugated tubes induced vortex flows which helped to increase heat transfer due to enhanced fluid mixing. The maximum thermal enhancement factor of 1.16 was obtained by using the spirally corrugated tube with DR = 0.06, PR = 0.25 at Re = 5,000.

引用

页码：607 / 629

页数：23

共 20 条

[1] Experimental study of evaporation heat transfer of R-134a inside a corrugated tube with different tube inclinations [J].