Close this search box.

MFiX 19.2 Release Announcement

Dear MFiX user,

We are pleased to announce the MFiX 19.2 release. Please visit to 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

Changes from MFiX 19.1:

New features:

  • Text Editor and File Browser:
    • A text editor is now built in the GUI, along with a file browser.
    • The file browser allows to open files from the project directory or the MFiX source tree.
    • The text editor allows users to edit UDFs or other files (particle_input.dat, gridmap.dat etc.) directly from the GUI.
    • Syntax highlight, find/replace, go to line features.
    • Source code files are automatically copied to project directory for easy build.
  • MFiX Keyword browser:
    • Users can search for a known keyword to get documentation.
    • Keywords can be located in the GUI by automatically moving to the widget controlling the keyword, and briefly highlighting the keyword.
  • Advanced pane:
    • Users can now add/edit keywords that don’t have a widget in the GUI. This includes regular keywords, and user-defined keywords.
  • Material Database
    • Solids phase diameter and density can be imported from a database of common NETL materials.


  • Allow UDF for density model
  • Allow regions to be re-ordered
  • Allow solver to run if keyword time is not set
  • Add/Remove job queue configurations from the run dialog
  • Solver warning and error messages are highlighted in the console window

Notable bug fixes:

  • Fixed DMP issue causing DEM particle temperature to rise along process boundaries
  • Fixed send/receive buffer size with Garg interpolation in DMP
  • Fixed mishandling of baseline composition when switching back and forth between variable and constant solids density
  • Graceful exit with MFIX.STOP didn't write DEM .RES files
  • Walltime advanced at wrong rate while paused