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Multiscale Sampling of a Heterogeneous Water/Metal Catalyst Interface using Density Functional Theory and Force-Field Molecular Dynamics
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Efficient storage of large MODFLOW models.

Norman L Jones1, Alan M Lemon, Michael J Kennard

  • 1Aquaveo LLC, Provo, UT; (801)-691-5534; alemon@aquaveo.com.

Ground Water
|April 23, 2013
PubMed
Summary
This summary is machine-generated.

This study introduces a method to compress large MODFLOW files using HDF5, reducing file sizes by up to 99% without slowing simulations. This technique is ideal for managing extensive groundwater models and Monte Carlo analyses.

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Area of Science:

  • Hydrogeology
  • Computational Science
  • Data Management

Background:

  • MODFLOW is a widely used software for groundwater modeling.
  • Large-scale simulations generate substantial input/output files, posing storage and management challenges.
  • Efficient data handling is crucial for complex hydrological studies.

Purpose of the Study:

  • To develop and present a methodology for compressing bulky MODFLOW files.
  • To reduce storage requirements for large regional models and Monte Carlo simulations.
  • To ensure compatibility with existing MODFLOW workflows and parameter-based models.

Main Methods:

  • Utilizing the HDF5 library for binary compression of MODFLOW input/output files.
  • Focusing compression on list- and array-based data, including cell properties and recharge arrays.
  • Modifying the MODFLOW code to implement the compression utilities.

Main Results:

  • Achieved compression ratios of up to 99% for MODFLOW files.
  • Demonstrated no significant time penalty associated with the compression/decompression process.
  • Ensured compatibility with standard MODFLOW simulations and models with parameters like pilot points.

Conclusions:

  • The HDF5-based compression method offers a highly efficient solution for managing large MODFLOW datasets.
  • This approach significantly reduces storage needs without compromising simulation performance.
  • The developed utilities are practical and compatible, facilitating their adoption in hydrogeological research.