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FoamCaseBuilder and FreeCAD CfdWorkbench changelog

Phase I Concept demonstration (Finished 2016-01-20)

branch: foambuilder_pre1

git clone --branch foambuilder_pre1 https://github.com/qingfengxia/FreeCAD.git --single-branch

This is an attempt of transform FEM workbench into general CAE workbench. Finally, only FemSolverObject is accepted into the official for multiple solver support

  • CaeAnalysis: class should operate on diff category of solvers
  • CaeSolver: extending Fem::FemSolverObject, factory pattern, create solver from name
  • FoamCaseWriter: OpenFOAM case writer, the key part is meshing and case setup
  • Fixed material as air or water
  • 3D UNV meshing writing function, FreeCAD mesh export does not write boundary elements
  • Use fem::constraint Constraint mapping CFD boundary: Force->Velocity (Displacement is missing), Pressure->Pressure, Symmetry is missing (Pulley), PressureOutlet (Gear), VelocityOutlet(Bearing),

Phase II general demonstration (Finished 2016-04-17)

branch: foambuilder_pre2 git clone --branch foambuilder_pre2 https://github.com/qingfengxia/FreeCAD.git --single-branch

  • FemMaterial: A domo for general Materail model for any FEM not yet fully functional, to discuss with community for standardizing Material model, also design for other CAE analysis EletroMagnetics

  • FemConstraintFluidBoundary: CFD boundary conditions are catogeried into 5 types: inlet, outlet, wall, interface, freestream GUI menu and toolbar added

  • Run the OpenFoam sovler in external terminal, instead of waiting in solver control task panel

  • Use exteranal result viewer paraview CFD is cell base solution, while FEM is node base. It is not easy to reuse ResultObject volPointInterpolation - interpolate volume field to point field;

Phase III general usability (2016-09-05)

foambuilder_pre2 has be refactored to keep updated with latest FemWorkbench into branch: foambuilder1

  • cpp code FemConstraintFluidBoundary has been merged into official (Aug 2016)
  • TaskPanelFemSolverControl: a general FemSolver control TaskPanel (Sep 2016)
  • python codes CfdCaseWriterFoam and module FoamCaseBuilder etc. (Sep 2016)
  • basic RAS turbulent model and heat transfering case support (Oct 2016)

Phase IV: a new module "Cfd" workbench (2016-10-16)

  • branch foambuilder1 is moved into a new module "Cfd" (Oct 2016) git clone https://github.com/qingfengxia/Cfd.git

  • VTK mesh import and export for both Fem and Cfd modules (Oct 2016)

  • CfdResult import and render pressure on FemMesh, not tested (Oct 2016)

  • tweaks (29/12/2016):

    • feature: add Gmsh function, meshinfo, clearmesh toolbar items into CfdWorkbench
    • feature: add double click CfdSolver to bring up CfdWorkbench and FemGui.setActiveAnalysis() automatically
    • bugfix: can not load _TaskPanelCfdSolverControl if WorkingDir does not exist or not writable
    • bugfix: double click CfdAnalysis will activate CfdWorkbench instead of FemWorkbench, via adding _ViewProviderCfdAnalysis.py
    • feature: remove the limiation that freecad-daily must be started in terminal command, pyFoam need write access to current dir
    • bugfix: boundary mesh is not appended to unv volume mesh in CfdTools.py, due to recent femmesh code refactoring from Oct 2016 to Dec 2016. Bugfix from https://github.com/jaheyns/FreeCAD/blob/master/src/Mod/Cfd/CfdTools.py works! And it is merged
    • bugfix can not run runFoamCommand() immediately after another runFoamCommand, which makes freecad-daily stopped/abort,

Phase V (2017): welcome the team from South Africa and toward official workbench

Contribution from team from South Africa

  • run and view progress in gnuplot in solver control task panel currently, CfdResult load button will freeze GUI, since result is not existent,

  • Set up and run solver via run script 'Allrun' abd okit

  • initalize internal field by potentialFoam

  • code style update

  • cmake file for adding Cfd into official

They have forked this CFD workbench into CfdFoam, focusing on OpenFOAM. see more at https://github.com/jaheyns/CfdFoam

  • pure python class of BoundaryCondition, instead of C++ FemConstraintFluidBoundary

  • paraview template

  • porous model

  • cfmesh for mesh refining

my progress in Phase V (2017)

  • FluidMaterial and stdmat material: a general FemMaterail object serve all kinds of CAE Analysis, commit to FemWorkbench as FemMaterial
  • boundary layer setup based on Gmsh: commit to FemWorkbench
  • restruct Cfd_SolverCommand to fit new Cfd solver , like Fenics
  • CFD workbench icon is designed and located in Cfd module path
  • runFoamCommand() refactoring to unicode path support is done

initial support of Fenics solver for laminar flow

  • fenics solver is devloed in fsolver repo: https://github.com/qingfengxia/fsolvers
  • 3D mesh with boundary export is done via gmsh
  • fenics solver related new classes are added into CFD workbench repo

new platform windows 10 WSL support

  • installation guide and tutorial on Win10 (output from WSL can be piped to Windows process in 1803)
  • check if case path with space and utf8 char works in FoamCaseBuilder
  • make runFoamCommand() work in Bash on windows 10 (WSL)
  • 2 freecad std test files with CFD case setup, put into Cfd/Example/ or std path of freecad
  • matplotlib for residual plot

Phase VI (end of 2018 to Xmas 2019)

  • create new analysis from mesh file generated from external meshing tool
  • ChoiceDialog to select solver
  • pure python "CFdFluidBoundary", on par with C++ FemConstraintFluidBoundary
  • TaskPanel to provide raw dict to override "CFdFluidBoundary" setting

pull request sent to FEM workbench

  • 2D meshing support: unv currently only deal with 3D, but possible to support 2D
  • general initalizer bodysource class, added into solver object
  • refactor FemSelfWeight as a general body force constraint

Phase VII maintenance and quality improvement (2019~2020):

Qt5 and Python3 support for Cfd workbench in FreeCAD 0.19 release

  • reorganize files as FemWorkbench
  • bugfix for python3 in FreeCAD 0.19
  • unit test and travis CI
  • remove FenicsSolver submodule, make FenicsSolver an optional dependency
  • mesh import TaskPanel with length scaling option

Todo:

  • FoamCaseBuilder unit test and CI
  • FemFluidMaterial path, report bug
  • wiki, documentation
  • tutorial and example file update

Phase VIII 2022

split out contribution from South Africa team, to make it back to single contributor

  • run and view progress in gnuplot in solver control task panel

    removed in 2009 to use only PLOT workbench of FreeCAD

  • Set up and run solver via run script 'Allrun'

    todo

  • initialize internal field by potentialFoam

    check and remove

  • code style update

    not significant

  • cmake file for adding Cfd into official

    removed