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PRISMS-PF (Version 1.2)
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@stvdwtt stvdwtt released this 19 Jun 20:45
· 787 commits to master since this release
v1.2
0141405

Update to v1.1, released in June 2017. The core library was substantially reorganized and nucleation and postprocessing
capabilities were added.

Added functionality:

  • Add postprocessing capabilities, which can be accessed in the new "postprocess.h" file in each application folder.
  • New applications "nucleationModel" and "_preferential_nucleationModel" were added and include new nucleation capabilities.

Changes to the pre-built applications:

  • New applications "nucleationModel" and "_preferential_nucleationModel" were added and include new nucleation capabilities.
  • Changed the initial conditions for the Allen-Cahn and the Cahn-Hilliard applications to have smooth initial profiles.
  • The elastic constants are now accessed by "userInputs.CIJ_List" instead of just "CIJ_List" in the functions in equations.h.
  • Updated the gradient energy coefficient, the time step, and the mesh resolution of the Allen-Cahn application. Increased the
    time step for CHAC_anisotropy to its maximum stable level. Changed the mesh resolution and time step for the coupled
    Allen-Cahn/Cahn-Hilliard application. Changed the convergence tolerance, time step, and number of iterations for the precipitate
    evolution application.
  • The Fickian diffusion application was overhauled to be more conceptually straightforward.
  • Changed to a simpler way of specifying the initial conditions, calculating the distances by hand instead of using a pre-built,
    deal.II method.

Performance improvements:

  • Removed unnecessary applications of constraints, improving run times by up to 30%.
  • Updated how Dirichlet constraints are implemented, reducing the number of solver iterations for non-zero Dirichlet BCs.

Bug fixes:

  • Dirichlet BCs now work for parabolic PDEs.
  • Users can now load in ICs with PFields in 3D and with adaptive meshes.

Other changes:

  • Restructured much of the core library. Model files were completely eliminated, pushing many of those functions into MatrixFreePDE.
    Each application now has a subclass of MatrixFreePDE called customPDE where member variables and methods can be implemented for
    specific applications.
  • A wall was put in place between the define macros in the input files and the core solver code. The inputs are now housed in the
    new "userInputParameters" class.
  • The core library is now linked instead of "included" in the apps. This increases the compile time the first time an app is compiled
    but decreases it substantially afterward.
  • Added more in-app explanation of how to set the BCs (more comments in each ICs_and_BCs.h file)

Known issues:

  • PFields only work for scalar fields and only work when the variable with index zero is a scalar field.
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