MFIX-Exa 26.03 Release Notes

Improvements/new capabilities

  • Add Sutherland and PowerLaw conductivity models (exa/mfix!1688)

Bug fixes

  • Relax closed system constraint checks and fix coarse/fine mask (exa/mfix!1707)
  • Error in computing closed system constraint (exa/mfix!1705)
  • Fix Broyden Jacobiain approximation in chemistry solver (exa/mfix!1697)
  • Correct typo in adiabatic EB BC (exa/mfix!1694)
  • Check length of species for MW setup (exa/mfix!1690)
  • Set default for gravity (exa/mfix!1681)

Code cleanup

  • fluid.thermodynamic_pressure → mfix.thermodynamic_pressure (exa/mfix!1713)
  • chemistry.solids.density → solids.density (exa/mfix!1712)
  • density → density.distribution (exa/mfix!1710) (exa/mfix!1711)
  • accept - or _ in “semi-structured” (exa/mfix!1717)
  • distribution keys (exa/mfix!1708)
  • Improve fix-inputs (exa/mfix!1704)
  • avoid GCC 15 warnings (exa/mfix!1691)
  • improve handling of tsplit (exa/mfix!1689)

CI and test changes

  • Fix spelling errors from ‘typos’ (exa/mfix!1695)
  • add “typos” to docker (exa/mfix!1696)

Subproject updates

  • none

Tools updates and fixes

  • Fixinputs script (exa/mfix!1685)

MFIX-Exa 26.03 has been released on the website. Please report any issues or bugs here on the forum.

Monthly User Meeting tomorrow, 3/3/2026, at 11:00 am ET. Call in info below:

Microsoft Teams meeting
Join: Join conversation

Meeting ID: 278 400 543 792 22
Passcode: bv7JW3So


Need help? | System reference

Dial in by phone
+1 681-245-7907,649465161# United States, Charleston
Find a local number
Phone conference ID: 649 465 161#