化工进展 ›› 2021, Vol. 40 ›› Issue (5): 2375-2388.doi: 10.16085/j.issn.1000-6613.2020-1140

• 化工过程与装备 • 上一篇    下一篇

基于仿生学的强化传热与减阻技术研究进展

李娟(), 朱章钰, 翟昊, 王嘉洛   

  1. 南京林业大学机械电子工程学院,江苏 南京 210037
  • 收稿日期:2020-06-22 出版日期:2021-05-06 发布日期:2020-08-25
  • 通讯作者: 李娟 E-mail:lijuan87@njfu.edu.cn
  • 作者简介:李娟(1987—),女,副教授,研究方向为强化传热技术与装备。E-mail:lijuan87@njfu.edu.cn
  • 基金资助:
    国家自然科学基金(51506098);南京林业大学科研启动项目(GXL006);江苏省政府留学奖学金项目

Research progress on heat transfer enhancement and surface drag reduction techniques based on bionics

LI Juan(), ZHU Zhangyu, ZHAI Hao, WANG Jialuo   

  1. College of Mechanical and Electronic Engineering, Nanjing Forestry University, Nanjing 210037, Jiangsu, China
  • Received:2020-06-22 Online:2021-05-06 Published:2020-08-25
  • Contact: LI Juan E-mail:lijuan87@njfu.edu.cn

摘要:

换热器优化设计对于提高设备能源利用率、缓解化工电力、航空动力等工业领域的能源短缺与余热浪费等问题具有重大意义。近年来,基于生物体表面形貌及其具备的功能,运用仿生学理论开发强化传热与流动减阻技术表现突出。本文主要综述了以仿生结构为优化设计参考,有关单相、相变强化传热以及沟槽、凹坑凸包、超疏水等流动减阻技术的研究进展,分析和总结了各类仿生结构的强化传热及减阻机理;结合微尺度高效传热的发展趋势,指出目前微尺度仿生结构研究仍停留在简化形仿阶段,结构优化方向不明确,结构参数影响规律以及传热减阻机理未有统一定论。基于微尺度对流传热高阻耗特点,本文提出了高效低阻耦合仿生结构设计以及综合性能研究的必要性,为微通道换热器优化设计提供有益指导与发展方向。

关键词: 仿生, 传热, 减阻, 优化设计, 微通道

Abstract:

The structure optimization of heat exchanger is of great significance for improving the equipment efficiency and alleviating the problem of energy shortage and waste heat in chemical machinery, electric power engineering, aerospace engineering and other industrial fields. In recent years, based on the surface morphology of organisms and their functions, the application of bionics theory to develop heat transfer enhancement and drag reduction techniques has been outstanding. In this paper, the research progresses on strengthening single-phase, phase change heat transfer and groove, dimple, convex, superhydrophobic surface drag reduction technologies with bionic structure as the reference for optimal design were mainly summarized. Heat transfer enhancement and flow drag reduction mechanisms of various biomimetic structures were analyzed and concluded. Combined with the development trend of efficient heat transfer at micro-scale, it was pointed out that the research on biomimetic structures at micro-scale was still in the stage of simplified shape imitation. The direction of structural optimization was not clear. The influence of structural parameters and the heat transfer enhancement and flow drag reduction mechanisms have not been agreed. Based on the micro-scale convective heat transfer with high resistance, the necessity of coupling bionic structure design for high efficient and drag-reducing and comprehensive performance researches were proposed, which provides beneficial guidance and development direction for the optimization design of microchannel.

Key words: bionic, heat transfer, drag reduction, optimal design, microchannels

中图分类号: 

  • TK172