汽车工程 ›› 2025, Vol. 47 ›› Issue (10): 1953-1962.doi: 10.19562/j.chinasae.qcgc.2025.10.011

• • 上一篇    

海豚状肋片仿生流场的PEMFC性能研究

张拴羊1,徐洪涛2(),张国宾3,陈晓平1,袁泉1,陈冠一1   

  1. 1.宁波工程学院机械与汽车工程学院,宁波 315336
    2.上海理工大学能源与动力工程学院,上海 200093
    3.西安交通大学能源与动力工程学院,西安 710049
  • 收稿日期:2025-03-19 修回日期:2025-04-25 出版日期:2025-10-25 发布日期:2025-10-20
  • 通讯作者: 徐洪涛 E-mail:htxu@usst.edu.cn
  • 基金资助:
    浙江省自然科学基金(LQN25E060009)和宁波市2035科创甬江重点研发项目(2024Z151)资助。

Investigation on the Performance of PEMFC with Dolphin-Inspired Biomimetic Flow Field

Shuanyang Zhang1,Hongtao Xu2(),Guobin Zhang3,Xiaoping Chen1,Quan Yuan1,Guanyi Chen1   

  1. 1.Department of Mechanical Engineering,Ningbo University of Technology,Ningbo 315336
    2.School of Energy and Power Engineering,University of Shanghai for Science and Technology,Shanghai 200093
    3.School of Energy and Power Engineering,Xi’an Jiaotong University,Xi’an 710049
  • Received:2025-03-19 Revised:2025-04-25 Online:2025-10-25 Published:2025-10-20
  • Contact: Hongtao Xu E-mail:htxu@usst.edu.cn

摘要:

为了提升质子交换膜燃料电池(PEMFC)的输出性能及水热管理能力,本文受海豚减阻外形的启发,设计了一种海豚状肋片仿生流场(DSB-FF),通过Fluent对非等温的三维仿生流场模型进行模拟分析。结果表明,DSB-FF与三角形肋片流场(TB-FF)的极化曲线几乎一致。尽管TB-FF的峰值功率密度比平行流场(PFF)和DSB-FF高2.06%和0.61%,但其27.978 Pa的高压降导致净输出功率降低至0.720 W。而DSB-FF凭借更优的减阻设计实现了0.986 W的最高净输出功率,有效平衡了功率密度与压降,并在大部分区域保持了较高的氧气摩尔浓度。此外,与PFF相比,DSB-FF能够加速流道内反应气体的速度,将排水时间缩短了约5 ms,并且接触角递减型流道以11 ms的最短时间表现出比均值型流道和递增型流道更优秀的排水能力。最后,配备冷却流道的DSB-FF能够有效减少高温区域,展现出优于PFF的热管理能力。

关键词: 质子交换膜燃料电池, 仿生流场, 输出性能, 水热管理

Abstract:

In order to improve the output performance and water and thermal management capabilities of proton exchange membrane fuel cells (PEMFCs), inspired by the drag-reducing shape of dolphins, a dolphin-shaped blockage flow field (DSB-FF) is designed in this paper. A non-isothermal three-dimensional model of the biomimetic flow field is developed and analyzed using Fluent. The simulation results show that the polarization curves of DSB-FF are almost identical to those of the triangular blockage flow field (TB-FF). Although the peak power density of TB-FF is 2.06% and 0.61% higher than that of the parallel flow field (PFF) and DSB-FF, respectively, its high pressure drop of 27.978 Pa reduces the net output power to 0.720 W. In contrast, DSB-FF, with its superior drag-reducing design, achieves the highest net output power of 0.986 W, effectively balancing power density and pressure drop while maintaining a higher oxygen molar concentration across most regions. Additionally, compared to PFF, DSB-FF accelerates the flow velocity of reactive gases within the flow channels, reducing the drainage time by approximately 5 ms. Among the flow fields, the decreasing contact angle flow field demonstrates the best drainage performance with the shortest drainage time of 11 ms, outperforming the mean and increasing contact angle flow fields. Finally, the DSB-FF equipped with cooling channels effectively reduces the high-temperature regions, exhibiting superior thermal management capabilities compared to PFF.

Key words: proton exchange membrane fuel cell, biomimetic flow field, output performance, water and thermal management