制冷技术2025，Vol.45Issue(4)：25-30,76,7.DOI:10.3969/j.issn.2095-4468.2025.04.105
新型扭曲正多边形管管内传热与压降特性的数值研究
Numerical Study on Heat Transfer and Pressure Drop Characteristics in Novel Twisted Regular Polygon Tubes
华乐 1李自成1
作者信息
- 1. 无锡金波隔振科技有限公司,江苏 无锡 214145
- 折叠
摘要
Abstract
Under a constant cross-sectional area condition,several novel twisted tubes with regular polygonal cross-sections are proposed.The effects of Reynolds number,cross-sectional shape,and torque on their heat transfer and flow characteristics are numerically investigated.Based on the calculated results,heat transfer and resistance correlation formulas for twisted tubes are obtained.The results show that the highest Nusselt number is achieved by the regular hexagonal twisted tube,which averages over 200%of that of the equilateral triangular twisted tube.The friction coefficient is approximately 70%of that of the equilateral triangular twisted tube.For regular hexagonal twisted tubes with varying torques,within the studied size range,the twisted tube with a torque of 250 mm is found to exhibit the highest performance evaluation criterion(3.6-5.1),5%and 12%higher than those with torques of 200 mm and 150 mm,respectively,indicating the best overall performance.关键词
扭曲正多边形/扭矩/强化传热/摩擦系数/数值模拟Key words
Twist regular polygon/Torque/Heat transfer enhancement/Friction coefficient/Numerical simulation分类
能源科技引用本文复制引用
华乐,李自成..新型扭曲正多边形管管内传热与压降特性的数值研究[J].制冷技术,2025,45(4):25-30,76,7.
