PhParAdapt/Simmetrix

The following page provides details for performing mesh adaptation using the PhParAdapt tool with Simmetrix routines.

Initial Notes to User

• The solution migration feature is currently broken and thus requires other means for transferring the solution to new meshes that are created from PhParAdapt (e.g. solution interpolation in Paraview)
• To date, the steps described herein have only been tried with the following restrictions:
  • Tetrahedral elements
    • Extruded element types apparently can be used but require removal of any extrusion constraints in the mesh. Below are some incomplete details regarding that process for reference. See #Removal_of_Extrusion_Constraint Removal of Extrusion Constraint
  • Serial case
  • Geometry created using SimModeler7.0-190626
  • Adaptation using 6th entry of errors field

Adaptation Process

Creating Initial Restart and Error Files

Beginning inside of the 1-1-Chef directory,

mkdir 1-1-phParAdapt
cd 1-1-phParAdapt 

Create soft links to the geom files above the 1-1-Chef directory,

ln -s ../../geom.smd
ln -s ../../geom.sms
ln -s ../../geom_nat.x_t 

Create an adapt.inp file similar

Notes on Folder Structure

Below is an overview of the folder structure to reference during the adaptation process:

1. [ geom.smd, geom.sms, geom_nat.x_t ]
2. 1-1-Chef
   1. 1-1-phParAdapt
      1. adapt.inp
      2. run_phParAdapt.sh
      3. 1-procs_case
         1. geombc.dat.1
         2. restart.<#>.1
      4. mesh_parts.sms
      5. A1-phParAdapt
         1. restart.<#>.1
         2. errors.<#>.1
         3. [geom.smd, geom.sms, geom_nat.x_t, parts.sms]
         4. adapt.inp
         5. <#> ( step number directory )
            1. mesh_parts.sms
            2. 1-1-phParAdapt
               1. [geom.smd, geom.sms, geom_nat.x_t]
               2. adapt.inp
               3. 1-procs_case ( restart files with adapted mesh )

Removal of Extrusion Constraint

Riccardo has used a procedure in the past to remove the extrusion constraint from a mesh that enabled adaptation to be performed on extrusion-type elements.

The following directory contains an example of this process: /projects/tools/Models/NASAWingBodyJunction/RajMeshFine/Mesh/1-1-phParAdapt/RemExtrusion/

The executable that is called for removal of the constraint is a part of SCOREC-core, found at <path/to/SCOREC-core/build/dir>/test/rm_extrusion and the source code, in case edits are required, is found at <path/to/SCOREC-core/source/dir>/core/test/rm_extrusion.cc