期刊
CURRENT NANOSCIENCE
卷 6, 期 2, 页码 226-231出版社
BENTHAM SCIENCE PUBL LTD
DOI: 10.2174/157341310790945623
关键词
X-ray nanotomography; gas diffusion layer (GDL); fuel cell; porous material; threshold; Lattice Boltzmann (LB)
类别
资金
- UK Technology Strategy Board (TSB) [TP/6/S/K3032H]
- AVL List GmbH
- Intelligent Energy Ltd
- Johnson Matthey Fuel Cells Ltd
- Saati Group Inc
- Technical Fibre Products Ltd
A common challenge in the X-ray nanotomography of porous media, such as fuel cell gas diffusion layers (GDLs), is to binarize nanotomography greyscale images in order to differentiate between solids and voids for structural characterisation and numerical flow analysis. In the process threshold determination is critical. This paper presents a study on determination of and fine-tuning threshold value based on comparison of material porosity and average fibre diameter obtained from nanotomography images with porosity data from density experiments and average fibre diameter achieved from scanning electron microscopy images respectively. The more accurate 3D reconstructed model is then used to calculate pore size distribution and average pore size, while the gas permeability of the representative 3D binary images are calculated using a single phase Lattice Boltzmann (LB) model in the D3Q19 regime.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据