化学工程2026，Vol.54Issue(8)：7-12,6.DOI:10.3969/j.issn.1005-9954.2026.08.002
磁场作用下不同管型内铁磁流体传热性能的对比
Comparison of heat transfer performance of ferromagnetic fluids in different tube types under action of magnetic field
摘要
Abstract
Based on the finite volume method,the flow and heat transfer characteristics of ferromagnetic fluids in channels with three cross-sectional configurations(circular tubes,flat tubes and square tubes)with the same equivalent diameter were numerically studied under the action of an external magnetic field.The influence of the tubular structure on the formation and development of the fluid swirl structure in the channel,the heat transfer enhancement effect and the comprehensive enhancement performance were emphatically analyzed.The results show that under the action of magnetic field,different characteristic swirl structures are induced in all three tube types.Among them,the intensity difference between the primary and secondary vortices within the square tube is substantial,and the development of the secondary vortex structure is constrained.The main vortex intensity of the round tube is found to be the largest(round tube＞square tube＞flat tube),and its flow field is observed to reach the fully developed state first.The wall heat transfer characteristics of various tube types are found to be significantly different,mainly determined by the swirl structure and development characteristics inside the tubes.By comparing the Nusselt number Nu and the comprehensive strengthening factor Pth,it is found that the heat transfer performance and comprehensive strengthening performance of the three types of tubes under the magnetic field are significantly improved compared with the non-magnetic field condition.Their performance ranking in terms of superiority and inferiority is determined to be round tube＞flat tube＞square tube.关键词
铁磁流体/磁场/管型/多场耦合/强化传热Key words
ferromagnetic fluid/magnetic/tube type/multi-field coupling/heat transfer enhancement分类
能源科技引用本文复制引用
王翠华,刘东,魏然,张乐,王娟,张先珍..磁场作用下不同管型内铁磁流体传热性能的对比[J].化学工程,2026,54(8):7-12,6.基金项目
辽宁省教育厅面上项目(LJKZ0447,LJKMZ20220775) （LJKZ0447,LJKMZ20220775）
