3D investigation of the channel cross-section configuration effect on the power delivered by PEMFCs with straight channels
| Autor: | Youcef Sahli, Hocine Ben Moussa, Abdallah Mohammedi |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Pressure drop
Materials science business.industry 020209 energy General Chemical Engineering Organic Chemistry Energy Engineering and Power Technology 02 engineering and technology Mechanics Computational fluid dynamics Power (physics) Cross section (physics) Fuel Technology 020401 chemical engineering 0202 electrical engineering electronic engineering information engineering 0204 chemical engineering Transport phenomena business Current density Communication channel Power density |
| Zdroj: | Fuel. 263:116713 |
| ISSN: | 0016-2361 |
| DOI: | 10.1016/j.fuel.2019.116713 |
| Popis: | In the present study, a three-dimensional (CFD) model is performed to investigate the effects of the channel cross-section shape on power density, pressure drop and local transport phenomena of the single straight channel PEMFC. 30 forms of channel cross-section including 5 well-known and 25 new innovative channel cross-section configurations have been investigated using ANSYS-FLUENT. The carried out experimental and numerical validations to verify the present model accuracy have shown a good agreement. The channel cross-section shapes have a significant influence on the power density at medium and higher current density. The best performance is reported by the channel cross-section configuration that has a trapezoidal bottom shape and an inverted trapezoidal top form. Whereas, the worst performance is obtained by the channel cross-section configuration that has an inverted half elliptical bottom shape and an inverted trapezoidal top form. A bad choice of the channel cross-section configuration can lead to a power density loss of 4.65%. The largest pressure drop is obtained from the triangular channel cross-section form whereas; the smallest pressure drop is reported by the rectangular channel cross-section shape. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect