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A Python package for performing pore network modeling of porous media

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Cite as:

Gostick, Jeff, Mahmoudreza Aghighi, James Hinebaugh, Tom Tranter, Michael A. Hoeh, Harold Day, Brennan Spellacy et al. "OpenPNM: a pore network modeling package." Computing in Science & Engineering 18, no. 4 (2016): 60-74. doi:10.1109/MCSE.2016.49

Overview of OpenPNM

OpenPNM is an open source project aiming to provide porous media researchers with a comprehensive framework for performing pore network simulations on a wide range of materials.

Installation and Requirements

OpenPNM can be installed from the Python Package index using:

pip install openpnm

Or the source code can be downloaded from Github and installed by running:

pip install -e 'path/to/downloaded/files'

The advantage to installing from the source code is that you can edit the files and have access to your changes each time you import OpenPNM.

OpenPNM requires the Scipy Stack (Numpy, Scipy, Matplotlib, etc), which is most conveniently obtained by installing the Anaconda Distribution.

Example Usage

The following code block illustrates how to use OpenPNM to perform a mercury intrusion porosimetry simulation:

import openpnm as op
pn = op.network.Cubic(shape=[10, 10, 10], spacing=0.0001)
geo = op.geometry.StickAndBall(network=pn, pores=pn.Ps, throats=pn.Ts)
Hg = op.phases.Mercury(network=pn)
phys = op.physics.Standard(network=pn, phase=Hg, geometry=geo)
mip = op.algorithms.Porosimetry(network=pn)
mip.setup(phase=Hg)
mip.set_inlets(pores=pn.pores(['left', 'right', 'top', 'bottom']))
mip.run()

The network can be visualized in Paraview giving the following:

The drainage curve can be visualized with MIP.plot_intrusion_curve() giving something like this:

A collection of examples is available in the examples folder of this repository: Examples

Release Management and Versioning

OpenPNM uses Semantic Versioning (i.e. X.Y.Z) to label releases. All major and minor versions (X.Y.z) are available on PyPI, but bugfixe releases (x.y.Z) are not generally pushed unless the bug is important.

OpenPNM uses the Github Flow system of Git branching, except instead of merging PRs into master, they are merged into a branch called dev. Any code added to dev is done via Pull Requests (PRs). When new PRs are merged into the dev branch, they are not given a new version number. Once enough new features have been added, the dev branch is merged into the master branch, and the minor release number (x.Y.z) will be incremented. An exception to this rule are bugfixes which may be found on master. In these cases a PR can be merged into master and the version number wil be incremented (x.y.Z) to indicate the fix.

OpenPNM depends on several other packages widely known as the Scipy Stack. It is our policy to always support the latest version of all these packages and their dependencies.

The main developer for this project is Prof. Jeff Gostick ([email protected]).

Licence and Citation

OpenPNM is free to use and is offered under the permissive MIT License

If you do use OpenPNM in an academic work, the developers ask that you cite the following paper, which outlines the design principles and general uses of OpenPNM:

Gostick et al. OpenPNM: A pore network modeling package. Computing in Science & Engineering. 18(4), p60-74.

A link to this article can be found here.

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A Python package for performing pore network modeling of porous media

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