New metric derived from the Darcy-Weisbach formula for rapid characterization of anode hydrodynamic loss in fuel cells

被引：1

作者：

Li, Chao ^{[1
]}

Huang, Yuting ^{[1
]}

Fu, Jianqin ^{[1
]}

Sun, Xilei ^{[1
]}

Wei, Changhe ^{[1
,2
]}

机构：

[1] Hunan Univ, State Key Lab Adv Design & Mfg Technol Vehicle, Changsha 410082, Peoples R China

[2] Hunan Benteng Power Technol Co Ltd, Changsha 410221, Peoples R China

来源：

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | 2025年 / 239卷

基金：

中国国家自然科学基金;

关键词：

Fuel cells; Hydrodynamic losses; Pressure drop; Rapid characterization; Semi-analytical mathematical model; PRESSURE-DROP;

D O I：

10.1016/j.ijheatmasstransfer.2024.126582

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The primary sources of hydrodynamic loss (HL) within fuel cell (FC) anodes include friction losses due to fluid viscosity and dispersion losses due to fluid redirection. Rapid and accurate quantification of HL facilitates integration, fault diagnosis in hydrogen circulation systems, and the optimization of heat and mass transfer in FCs. However, a rapid method for quantifying HL based on physical characteristics remains elusive. In this study, a new semi-analytical mathematical model, incorporating two index factors Yt and Lc number, is put forward by rational reconstruction of the Darcy-Weisbach formula. Experimental and simulation research has verified the qualitative and quantitative application of the novel method across various FCs, with an average mean absolute percentage error of 2.59 %. Based on physical derivations, the Yt number comprehensively reflects along-channel losses, while the Lc number independently quantifies discrete loss arising from swerve corners. This finding enables rapid comparisons of HL characteristics among different structures and enriches the theoretical framework for FC optimization.

引用

页数：12