Scholarlink

<p>In this study, a novel path-percolation algorithm is introduced to simulate inhomogeneous porous channels. Furthermore, a novel double-path-percolation model was developed to simulate porous channels with lower-tortuosity void paths for fluid transfer and solid paths for heat and electron transfer. Micro-computed tomographies of two actual gas diffusion layer materials used in polymer electrolyte fuel cells were digitized and used in diffusion simulations to provide morphology precisely. A single-phase fluid flow through the inhomogeneous porous channels was simulated using a two-dimensional lattice Boltzmann model, where the fluid flow codes were ported on Nvidia GPUs using CUDA. The effective diffusion equations as a function of effective porosity and tortuosity were developed for single- and double-path-percolation models, respectively, and tested using the micro-computed tomographies of the gas diffusion layers.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

A Novel Approach to Structure/Property Relations in Inhomogeneous Porous Media with High and Low Porosity

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年6月3日

查看全文
  • Ozgur Cekmer,
  • Sukkee Um,
  • Matthew M. Mench

摘要

In this study, a novel path-percolation algorithm is introduced to simulate inhomogeneous porous channels. Furthermore, a novel double-path-percolation model was developed to simulate porous channels with lower-tortuosity void paths for fluid transfer and solid paths for heat and electron transfer. Micro-computed tomographies of two actual gas diffusion layer materials used in polymer electrolyte fuel cells were digitized and used in diffusion simulations to provide morphology precisely. A single-phase fluid flow through the inhomogeneous porous channels was simulated using a two-dimensional lattice Boltzmann model, where the fluid flow codes were ported on Nvidia GPUs using CUDA. The effective diffusion equations as a function of effective porosity and tortuosity were developed for single- and double-path-percolation models, respectively, and tested using the micro-computed tomographies of the gas diffusion layers.