Many examples of experimental input files are included on the …\Documents\PoreXpert\Example Files\Experimental Data directory created on your computer when you download and install the PoreXpert software.

Here there are additional files to download.  To download them, click on the highlighted link.  If a download option does not automatically open, click on the link with the right-hand button of your mouse, and Copy link address. Open a new tab on your browser.  In the window labelled ..’type a URL’, click with the right-hand button of your mouse, and click Paste.  Then click on the end of the address and press your return key, whereupon the Save As option will open to allow you to choose a directory into which to save the file.

Then you can view all the .pXt and .poreXpert output files with the free Unit Cell viewer available on Signing In.

Void network structure types (short-range size auto-correlation loci)

To look at various different void network structure types, download this demonstration file containing the 7 different structure types listed below.  They can be viewed with either the fully licensed Academic or Professional versions of the software, or with the free unit cell viewer available from the main downloads page.

  • (1) Horizontal: Small to large.  Cluster ratio: 6
  • (2) Vertically banded. Size 30x30x30. Cluster ratio: 3
  • (3) Horizontal: Large surface throats. Size 10x10x10. Cluster ratio not assigned
  • (4) Horizontal: Large surface throats. Size 30x30x30. Cluster ratio: 3
  • (5) Large centre zone. Size 25x25x25. Cluster ratio: 2.5
  • (6) Small centre zone. Size 30x30x30. Cluster ratio: 2
  • (7) Random. Size 30x30x30. Cluster ratio: 2

Tutorial files

Files are available to support the Introductory tutorials:   Tutorial files

the Intermediate tutorial: Intermediate tutorial modelling own sample

and the Advanced tutorial: Advanced Tutorial Artefacts .

Batch mode

Finding structure type

The following batch tests all structure types for a 15x15x15 grid unit cell: fitting all types 15x batch.pXt

Viewing some properties

To try out batch mode, download and save this batch file. Choose any sample.  At the Sampling screen, click Accept.  However, at the next screen, Curve Fitting, click Go Home not Accept – which will take you back to the Operations List screen.  Then click PoreBatch | Open batch description … , and click on the batch file you have just downloaded to load it into PoreXpert.  Then  click PoreBatch | Run batch list … , (or the shortcut Shift + R).The sample will be fitted in Batch mode, and several properties illustrated:  fluid migration, fluid uptake, thermal conductivity, permeability and tortuosity.

Running stochastic generations

Batch mode is also useful when optimising the fit using different stochastic generations.  To do that, follow the instructions above, but using one of these batch files:

Vertically banded structure type, 25x25x25 unit cell, first five stochastic generations:  fitting_batch_5_stoch_gens_VB_x25.pXt

Horizontal Large to Small structure type, 25x25x25 unit cell, first five stochastic generations:  fitting_batch_5_stoch_gens_HLtoS_x25.pXt 

These are some examples of samples we have already modelled:

  • Soil under slight tension, characterised by water retention, 98.3% water saturated: soil_98p3pc_water_saturated.pXt
  • Granite, characterised by mercury intrusion, 2% porous, 59% intruded by  non-wetting fluid: granite_2pc_porous_30x_59pcHg.pXt
  • Cellulose nitrate membrane, characterised with porometry, water wetted at zero applied pressure for 20 nanoseconds from its top surface:  Cellulose_nitrate_membrane
  • Gilsocarbon graphite trepanned from the core of a UK nuclear reactor showing negligible change of permeability between 400 and 640C at 40 bar pressure with clusters shown rendered and maximum permeability routes shown in non-red shades: Gilsocarbon_graphite_2perms_CR.pXt
  • Clashac sandstone showing permeability route though the structure: clashac sandstone showing permeability route .  If you are using the viewer, select the permeability operation.  Then rotate the unit cell so that you can see the subtle indication of the route shown in dark purple on the right-hand face of the unit cell.