化工进展 ›› 2019, Vol. 38 ›› Issue (12): 5410-5419.DOI: 10.16085/j.issn.1000-6613.2019-0537

• 材料科学与技术 • 上一篇    下一篇

磁场调控磁性纳米流体流动和传热研究进展

臧徐忠1,2(),石尔1,2(),傅俊萍1,2,余涛1,2   

  1. 1. 长沙理工大学能源与动力工程学院,湖南 长沙 410114
    2. 清洁能源与智能电网湖南省2011协同创新中心,湖南 长沙 410114
  • 收稿日期:2019-04-08 出版日期:2019-12-05 发布日期:2019-12-05
  • 通讯作者: 石尔
  • 作者简介:臧徐忠(1993—),女,硕士研究生,研究方向为多场耦合传热传质理论。E-mail:zangxuzhong@163.com
  • 基金资助:
    国家自然科学基金(11572056);湖南省自然科学基金青年项目(2018JJ3533);湖南省教育厅优秀青年项目(17B008)

A review of magnetic field effects on flow and heat transfer in magnetic nanofluids

Xuzhong ZANG1,2(),Er SHI1,2(),Junping FU1,2,Tao YU1,2   

  1. 1. School of Energy and Power Engineering, Changsha University of Science and Technology, Changsha 410114, Hunan, China
    2. Hunan Province 2011 Collaborative Innovation Center of Clean Energy and Smart Grid, Changsha 410114, Hunan, China
  • Received:2019-04-08 Online:2019-12-05 Published:2019-12-05
  • Contact: Er SHI

摘要:

磁性纳米流体在实现能量高效和可控传递领域极具发展潜力。本文综述了磁场作用下磁性纳米流体对流换热及沸腾换热的最新进展,主要包括强制对流换热、混合对流换热、自然对流换热、池沸腾换热及管内沸腾换热等方面的实验研究,分析了磁场类型、强度、梯度、频率、方向及磁铁位置等对磁性纳米流体流动和热传输特性的影响,指出可通过改变外加磁场来实现对磁性纳米流体流动和传热的控制,并探讨了磁性纳米流体流-磁耦合作用下的传热机理以及目前所面临的挑战。在此基础上,提出了未来磁场调控磁性纳米流体对流换热和沸腾换热的主要发展方向:制备稳定的磁性纳米流体,建立系统有效的流动和传热理论模型,并从微介观尺度诠释热-流-磁耦合协同换热机理。

关键词: 磁性纳米流体, 磁场, 对流换热, 沸腾换热, 传热机理

Abstract:

Magnetic nanofluids as heat transfer media have great potential for being used in efficient and controllable energy transfer. In this paper, recent investigations on convective heat transfer and boiling heat transfer of magnetic nanofluids under an external magnetic field were reviewed and summarized. It was focused on the experimental studies including forced convection, mixed convection, natural convection, pool boiling and tube boiling. The effects of magnetic field type, intensity, gradient, frequency, direction and magnet position on flow and heat transfer of magnetic nanofluids were analyzed. It is pointed out that the flow and heat transfer process of magnetic nanofluids can be controlled by applying a magnetic field. The heat transfer mechanisms of magnetic nanofluids under flow-magnetic coupling field and the current challenges were also discussed. Furthermore, the future directions of studies on magnetic nanofluids in the field of controlling the convection and boiling heat transfer were prospected to preparing stable magnetic nanofluids, establishing scientific and effective theoretical models of flow and heat transfer, and interpreting heat-flow-magnetic coupling heat transfer mechanisms from the micro-mesoscopic scale.

Key words: magnetic nanofluids, magnetic field, convective heat transfer, boiling heat transfer, heat transfer mechanism

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