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Efficient reconstruction and validation of heterogeneous microstructures for energy applications

Journal Article · · International Journal of Energy Research
DOI:https://doi.org/10.1002/er.8578· OSTI ID:2418630
 [1];  [2];  [3]
  1. Univ. of Kansas, Lawrence, KS (United States); OSTI
  2. Harbin Institute of Technology (China)
  3. Univ. of Kansas, Lawrence, KS (United States)
The digital reconstruction of microstructures is necessary for simulations in fields ranging from geology to electrochemistry, but the state-of-the-art digital reconstruction techniques often compromise between resolution and field of view. It is challenging to retain detailed microstructure information in large-scale reconstructions. Here, this study investigates different aspects of the Yeong-Torquato algorithm based on correlation functions to make it more efficient. We achieve this goal by reducing the computational complexity of the chord-length distribution function and the two-point correlation function, applying the random sphere-packing method as the initial condition, and restricting potential voxel swaps to interfaces. In addition, a novel superposition parallel scheme is introduced to aid in searching for potential voxel swaps. The algorithm proposed is validated by comparing the pore-size distributions of reconstructed 3D custom battery electrodes from a sample dataset obtained from transmission X-ray microscopy. From a sample image with 200 x 200 pixels, the code can reconstruct a 300 x 300 x 300 structure in under 22 h and reconstruct a 400 x 400 x 400 structure in 43 h with eight cores.
Research Organization:
Univ. of Kansas, Lawrence, KS (United States)
Sponsoring Organization:
USDOE; USDOE Office of Energy Efficiency and Renewable Energy (EERE)
Grant/Contract Number:
EE0008440
OSTI ID:
2418630
Alternate ID(s):
OSTI ID: 1907019
Journal Information:
International Journal of Energy Research, Journal Name: International Journal of Energy Research Journal Issue: 15 Vol. 46; ISSN 0363-907X
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English

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