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MFiX 22.2 Release Announcement

MFiX 22.2 Release Announcement

Dear MFiX user,

We are pleased to announce the MFiX 22.2 release. Please download the latest version. See the release note below that highlights the changes from the previous version.

Please visit the MFS forum for any software related questions, or send administrative questions to

The MFiX Development Team

New features:

  • MFiX default solver is available on the MacOS platform: Packages for both Intel and M1-based Macs are available for download. In addition to Conda installation, an alternative Miniforge/mambaforge installation is available on MacOSX.
  • Ability to compute time-averaged data in monitors. Users can control the sampling interval and start of time-averaged data. The rate of change of the time-averaged data can be used to detect pseudo steady state and stop a simulation if pseudo steady state is reached.
  • Ability to save only the maximum force chain per particle (DEM).


  • Displaying the monitor area or volume in the .csv file header.
  • Added particle count as a monitor variable.
  • Improved PIC initialization near rectangular geometry corners.
  • Improved Cp check at the beginning of the run to avoid zero Cp over entire temperature range.

Notable bug fixes:

  • Pure granular flow does not search for gas species anymore.
  • fixed monitor_pmass not being set when selecting "Mass" in a particle monitor.
  • Relaxed grid spacing check for cyclic BCs.
  • Added data check to make sure {IMAX, JMAX, KMAX} <= {DIM_I, DIM_J, DIM_K}.
  • Unset FEDORS_LANDEL when adding a third solid.