河南科技大学学报（自然科学版）2025，Vol.46Issue(1)：50-57,8.DOI:10.15926/j.cnki.issn1672-6871.2025.01.007
变间隙中空扭带圆管层流强化传热特性分析
Analysis of Heat Transfer Enhancement Characteristics in Laminar Flow through Circular Tubes with Variable-gap Hollow Twisted Tapes
摘要
Abstract
A novel variable-gap hollow twisted tape structure was proposed in this paper,aiming to effectively balance the heat transfer performance and flow resistance of shell-and-tube heat exchangers in building heating,ventilation,and air conditioning(HAVC)systems.A"narrow-wide-narrow"channel design was introduced to enhance fluid flow disturbance,improve heat transfer efficiency,and suppress excessive increases in flow resistance.Numerical simulations were conducted using Fluent software.The results show that the proposed structure improves heat transfer efficiency at higher Reynolds numbers compared to traditional twisted tapes while controlling the increase in flow resistance,thus enhancing overall heat transfer performance.The influence of the number of twisted tapes on the comprehensive heat transfer enhancement was also revealed.The research findings have great significance for optimizing the structural design of heat exchangers in building HVAC systems,and provide new insights for the optimization of inserted twisted tape designs in heat exchangers.关键词
变间隙中空扭带/强化传热/层流/数值模拟Key words
variable-gap hollow twisted tape/enhanced heat transfer/laminar flow/numerical simulation分类
能源与动力引用本文复制引用
遆曙光,杨智,高尚,郑立,邓姗姗,王浩鹏..变间隙中空扭带圆管层流强化传热特性分析[J].河南科技大学学报（自然科学版）,2025,46(1):50-57,8.基金项目
国家自然科学基金项目(51806201) （51806201）
河南省青年骨干教师项目(2023GGJS092) （2023GGJS092）
河南省科技攻关项目(232102320327,232102321053) （232102320327,232102321053）
