#Openfoam doxygen software
POLITECNICO DI MILANOWalk through icoFoamA look into icoFoam.New boundary conditions, utility and solver programming in OpenFOAM OpenFOAM: Programming Disclaimer: This content is not approved or endorsed by OpenCFD Limited, the producer of the OpenFOAM software and owner of the OpenFOAM and OpenCFD trademarks.
#Openfoam doxygen code
POLITECNICO DI MILANOWalk through icoFoamA look into icoFoam.C, time-loop code The time-loop starts by:įor (runTime++ !runTime.end() runTime++) and the rest is done at each time-step The fvSolution subdictionary PISO is read, and the Courant Number isĬalculated and written to the screen by (use the find command): # include "readPISOControls.H" # include "CourantNo.H" The momentum equations are dened and a velocity predictor is solved by:įvVectorMatrix UEqn ( fvm::ddt(U) + fvm::div(phi, U) - fvm::laplacian(nu, U) ) solve(UEqn = programming -fvc::grad(p)) Tommaso Lucchini/ OpenFOAM tutorial Have a look inside it and see how variables are created. createFields.H is located in the icoFoam directory. Where all the included les except createFields.H are in $FOAM_SRC/finiteVolume/lnInclude. Include "setRootCase.H" include include include include "createTime.H" "createMesh.H" "createFields.H" "initContinuityErrs.H" Int main(int argc, char *argv) where int argc and char *argv are the number of parameters and the actual parameters used when running icoFoam. POLITECNICO DI MILANOWalk through icoFoamĪ look into icoFoam.C, case setup and variable initialization icoFoam starts with Have a look into the source les to understand what these classes do. #include "OSspecific.H" #include "argList.H" #ifndef namespaceFoam #define namespaceFoam using namespace Foam #endif #endif The inclusion les before main are all the class denitions required by icoFoam. #ifndef fvCFD_H #define fvCFD_H #include "parRun.H" #include #include #include #include #include #include #include #include #include #include #include "Time.H" "fvMesh.H" "fvc.H" "fvMatrices.H" "fvm.H" "linear.H" "calculatedFvPatchFields.H" "fixedValueFvPatchFields.H" "adjustPhi.H" "findRefCell.H" "mathematicalConstants.H" POLITECNICO DI MILANOWalk through icoFoamA look into fvCFD.H Example: find $WM_PROJECT_DIR -iname "*fvCFD.H*" Where in PATH a le name containing LETTERSFILENAME in its le name is located. Use the command find PATH -iname "*LETTERSINFILENAME*" to nd $FOAM_SRC/finiteVolume/lnInclude/fvCFD.H, symbolic link to: $FOAM_SRC/finiteVolume/cfdTools/general/include/fvCFD.H See the le Make/options to understand where fvCFD.H is included from: The le fvCFD.H,included by icoFoam.C, contains all the class denitions icoFoam.C is the main le, while createFields.H is included by icoFoam.C. The Make directory contains instructions for the wmake compilation command. The FoamX directory is for pre-processing.
POLITECNICO DI MILANOWalk through icoFoamFile organization sol cd incompressible cd icoFoam The icoFoam directory consists of what follows (type ls): Local implementation les Main code, named consistently with the executable createFields.H mesh creation, Courant number calculation and similar Held centrally for easier maintenance Enforce consistent naming between executables, e.g. Include les Often repeated code snippets, e.g. Header les Located before the entry line of the executable int main(int argc, char* argv) Contain various class denitions Grouped together for easier use POLITECNICO DI MILANOWalk through a simple solverSolver walk-through: icoFoam Types of les Ready to run in a manner of commercial CFD/CCM software Example of OpenFOAM classes and library functionality in use OpenFOAM source code serves two functions:Įfcient and customised top-level solver for class of physics. $WM_PROJECT_DIR/applications $WM_PROJECT_DIR/applications/solvers $WM_PROJECT_DIR/applications/utilities $WM_PROJECT_DIR/src $FOAM_APP $FOAM_SOLVERS $FOAM_UTILITIES $FOAM_SRC Some useful commands to navigate inside the OpenFOAM sources:Īpp = $WM_PROJECT_DIR/applications sol = $WM_PROJECT_DIR/applications/solvers util = $WM_PROJECT_DIR/applications/utilities src = $WM_PROJECT_DIR/src POLITECNICO DI MILANOStructure of OpenFOAMNavigating the source code applications: source les of all the executables:īin: basic executable scripts.
The OpenFOAM code is structures as follows (type foam and then ls). POLITECNICO DI MILANOStructure of OpenFOAM Overview of the OpenFOAM structure A look at icoFoam Customizing an application Implementing a transport equation in a new application Customizing a boundary condition General information Tommaso Lucchini/ OpenFOAM programming tutorial OpenFOAM programming tutorialTommaso Lucchiniĭepartment of Energy Politecnico di Milano
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