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Related Experiment Videos

Reconstruction of random media using Monte Carlo methods.

C Manwart1, R Hilfer

  • 1Institut für Computeranwendungen 1, Universität Stuttgart, 70569 Stuttgart, Germany.

Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics
|April 24, 2002
PubMed
Summary

Simulated annealing reconstructed porous media using correlation functions. Simplifying calculations by evaluating correlations in fewer directions introduced artificial anisotropy, altering the microstructure.

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Area of Science:

  • Geology
  • Materials Science
  • Computational Science

Background:

  • Porous media reconstruction is crucial for understanding material properties.
  • Correlation functions characterize the microstructure of porous materials.
  • Simulated annealing offers a method for inverse problems like microstructure reconstruction.

Purpose of the Study:

  • To reconstruct two-dimensional porous media using simulated annealing and prescribed correlation functions.
  • To investigate the impact of simplifying correlation function evaluation on microstructure reconstruction.
  • To compare reconstructions using experimental (Fontainebleau sandstone) and synthetic correlation functions.

Main Methods:

  • Application of a simulated annealing algorithm for microstructure generation.

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  • Utilizing both experimental (Fontainebleau sandstone) and synthetic correlation functions.
  • Implementing a simplified evaluation of correlation functions along specific directions.

    • Main Results:

    • Reconstructions using simplified correlation evaluation produced microstructures significantly different from full evaluation.
    • The simplified method introduced artificial anisotropy not present in the original data.
    • Both experimental and synthetic correlation functions were used to generate distinct microstructures.

    Conclusions:

    • Simplifying correlation function evaluation in simulated annealing can lead to inaccurate microstructure reconstructions.
    • Artificial anisotropy is a potential artifact of simplified reconstruction methods.
    • Careful consideration of evaluation methods is necessary for accurate porous media modeling.