Two-phase flow dynamics study in the trapezoidal gas channel of PEM fuel cell based on lattice Boltzmann model

Lv，Xuecheng1; Zhou，Zhifu2; Wu，Wei Tao3; Wei，Lei4; Gao，Linsong1; Yang，Yunjie1; Li，Yang1; Li，Yubai1; Song，Yongchen1

2024

10.1080/15435075.2023.2300376

International Journal of Green Energy   影响因子和分区

1543-5075

1543-5083

Water management is a critical challenge in ensuring the performance and durability of low-temperature proton exchange membrane fuel cells (PEMFCs). This study utilizes the phase-field lattice Boltzmann method to conduct three-dimensional numerical simulations, investigating the dynamics of two-phase flow in the cathode gas channel (GC) of PEMFC with a trapezoidal cross-section. The effects of the water inlet location, the surface wettability of GC, the open angle of GC, and the air velocity on liquid water distribution and discharge are analyzed. The results indicate that positioning the water inlet in the middle of the GC significantly enhances PEMFC performance while having minimal impact on average pressure drop. A wall contact angle of 70° or 110°Can optimize fuel cell performance from different directions. Setting a wall contact angle at 70° optimizes gas flow stability and maintains a low-pressure drop value for the GC. A wall contact angle of 110° focuses on optimizing gas reactant diffusion ability into porous electrodes and GC drainage rate. An opening angle of 55° for the trapezoidal gas channel improves overall fuel cell performance. Increasing air velocity facilitates the film flow formation of liquid water on top wall surfaces within the GC.

gas channel lattice Boltzmann method Proton exchange membrane fuel cell two-phase flow water management

SCI ; EI

英语

其他

National Natural Science Foundation of China["52106226","52176058"]

Thermodynamics ; Science & Technology - Other Topics ; Energy & Fuels

Thermodynamics ; Green & Sustainable Science & Technology ; Energy & Fuels

WOS:001136377500001

TAYLOR & FRANCIS INC

2-s2.0-85181461617

Scopus

1.Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education,Dalian University of Technology,Dalian,China
2.State Key Laboratory of Multiphase Flow in Power Engineering,Xi’an Jiaotong University,Xi’an,China
3.School of Mechanical Engineering,Nanjing University of Science and Technology,Nanjing,China
4.Department of Mechanical and Energy Engineering,Southern University of Science and Technology,Shenzhen,China

Lv，Xuecheng,Zhou，Zhifu,Wu，Wei Tao,et al. Two-phase flow dynamics study in the trapezoidal gas channel of PEM fuel cell based on lattice Boltzmann model[J]. International Journal of Green Energy,2024,21(10).

Lv，Xuecheng.,Zhou，Zhifu.,Wu，Wei Tao.,Wei，Lei.,Gao，Linsong.,...&Song，Yongchen.(2024).Two-phase flow dynamics study in the trapezoidal gas channel of PEM fuel cell based on lattice Boltzmann model.International Journal of Green Energy,21(10).

Lv，Xuecheng,et al."Two-phase flow dynamics study in the trapezoidal gas channel of PEM fuel cell based on lattice Boltzmann model".International Journal of Green Energy 21.10(2024).