MFIX2013-1 Release Announcement

Dear MFIX user,

We are pleased to announce the release of the new version of MFIX (MFIX2013-1). Please visithttps://mfix.netl.doe.gov/members/download.php to download the latest version. Please see the release notes below that highlight the changes from the previous version.

Please send any software related questions to mfix-help@mfix.netl.doe.gov or administrative questions toadmin@mfix.netl.doe.gov.

Regards,
MFIX Development Team

Changes from MFIX2012-1 (Date: 01/19/2012) to MFIX2013-1 (Date: 03/06/2013)

New features added:

• Hybrid model
  • Ability to describe different solids phases in either Eulerian or Lagrangian frames
• MPPIC (Multi-Phase Particle in Cell)
  • Eulerian model for carrier phase coupled with particle-in-cell (PIC) based discrete representation for dispersed phase
  • Tentative release to handle cut-cells
• DEM
  • Tentative release to handle cut-cells

Changes in existing features:

• Bug fixes and enhancements:
  • Makefile
    • Improved user input
    • Object files are stored in dedicated directories to speed-up recompilation
• Reaction rate input
  • New user-friendly input method to define chemical reactions in input file
  • Simplification of user-defined reaction rate specification
  • Heats of reaction are automatically calculated
• Parallel execution
  • SMP mode of execution was turned off due to current assesment of OpenMP directives
• Cartesian Grid cut cell technique
  • Improvement in handling geometry intersections
  • Geometry input from multiple STL files

Documentation

• Updated documents
  • Readme file [1]
  • Cartesian grid documentation [2]
• New documents
  • MPPIC documentation [3]
  • MPI verification [4]
  • Compiler study [5]

Under Development:

• Stiff solver: Automatic parsing to elimnate user-input for Direct Integration method
• Variable solids density
  • Ability to have solids density vary as a function of species composition (Eulerian/Eulerian solver)
• Parallel execution
  • Updated OpenMP directives

Project Metrics:

• Change from 2012-1 Release:
  • 20 new files
  • Nearly 11,000 new lines of code (around 7,000 excluding comments and blank lines)
• 2013-1 Total count:
  • Files: 539
  • Lines: 192,460
  • Blank Lines: 25,376
  • Code Lines: 114,993
  • Comment Lines: 55,510
  • Statements: 85,098

References:

1. https://mfix.netl.doe.gov/documentation/Readme.pdf
2. https://mfix.netl.doe.gov/documentation/Cartesian_grid_user_guide.pdf
3. https://mfix.netl.doe.gov/documentation/mfix_pic_doc.pdf
4. https://mfix.netl.doe.gov/documentation/MPI_verification_for_MFIX.pdf
5. https://mfix.netl.doe.gov/documentation/MFIX_results_sensitivity_to_Fortran_compilers.pdf