Difference between revisions of "Main OFUtilities"

Revision as of 23:05, 2 August 2006

These are the utilities distributed with OpenFOAM

1 Error estimation

• estimateScalarError Estimates the error in the solution for a scalar transport equation in the standard form.

• icoErrorEstimate Estimates error for the incompressible laminar CFD application icoFoam.

• icoMomentError Estimates error for the incompressible laminar CFD application icoFoam.

• momentScalarError Estimates the error in the solution for a scalar transport equation in the standard form.

2 Mesh

2.1 Conversion

• cfxToFoam Converts a CFX mesh to OpenFOAM format.

• fluentMeshToFoam Converts a Fluent mesh to OpenFOAM format.

• foamMeshToFluent Writes out the OpenFOAM mesh in Fluent mesh format.

• gambitToFoam Converts a GAMBIT mesh to OpenFOAM format.

• gmshToFoam Reads .msh file as written by Gmsh. Does not use physical type of mesh quantities yet.

• ideasToFoam Converts an ANSYS input mesh file, exported from I-DEAS, to OpenFOAM format.

• kivaToFoam Converts a KIVA3v grid to OpenFOAM format.

• mshToFoam Reads .msh format generated by the Adventure system.

• netgenNeutralToFoam Converts a Netgen mesh to OpenFOAM format.

• sammToFoam Converts a STAR-CD SAMM mesh to OpenFOAM format.

• starToFoam Converts a STAR-CD PROSTAR mesh into OpenFOAM format.

• tetgenToFoam Reads .ele and .node and .face files as written by tetgen.

• writeMeshObj For mesh debugging: writes mesh as three separate OBJ files which can be viewed with e.g. javaview.

2.2 Generation

• blockMesh Mesh generator.

• makePolyMesh Constructs a polyMesh from a shapeMesh.

2.3 Manipulation

• attachMesh Attach topologically detached mesh using prescribed mesh modifiers.

• autoPatch Divides external faces into patches based on (user supplied) feature angle.

• cellSet Selects a cell set through a dictionary.

• checkMesh Checks validity of a mesh.

• couplePatches Utility to reorder cyclic and processor patches. Is now all built-in into morphing so reuse that code.

• createPatch Utility to create patches out of selected boundary faces. Faces come either from existing patches or from a faceSet.

• deformedGeom Deforms a polyMesh using a displacement field U and a scaling factor supplied as an argument.

• faceSet Selects a face set through a dictionary.

• fieldToCellSet Select cells based on field. Give min and max to select.

• flattenMesh Flatten the front and back planes of a 2D cartesian mesh.

• insideCells

• mergeMeshes Merge two meshes.

• mirrorMesh Mirrors a mesh around a given plane.

• moveEngineMesh Solver for moving meshes for engine calculations.

• moveMesh Solver for moving meshes.

• objToVTK Read obj line (not surface!) file and convert into vtk.

• pointSet Selects a point set through a dictionary.

• refineMesh Utility to refine cells in multiple directions. Either supply -all option to refine all cells (3D refinement for 3D cases; 2D for 2D cases) or reads a refineMeshDict with - cellSet to refine - directions to refine.

• refineShapeMesh Refines a region of a shapeMesh according to parameters specified in a refineShapeMeshDict dictionary.

• renumberMesh Renumbers the cell list in order to reduce the bandwidth, reading and renumbering all fields from all the time directories.

• scalePoints Scales the mesh points in the polyMesh directory by a factor supplied as an argument.

• splitMesh Splits mesh by making internal faces external. Uses attachDetach.

• splitMeshRegions Splits mesh into multiple regions and writes them to consecutive time directories. Each region is defined as a domain whose cells can all be reached by cell-face-cell walking. Uses meshWave.

• stitchMesh

• subsetMesh Selects a section of mesh based on a cellSet.

• tetDecomposition Takes a mesh and decomposes it into tetrahedra using a face-cell centre decomposition.

• zipUpMesh Reads in a mesh with hanging vertices and zips up the cells to guarantee that all polyhedral cells of valid shape are closed.

3 Miscellaneous

• foamConvert21To22 Converts the following case dictionaries from 2.1 to 2.2 syntax: - fvSchemes - fvSolution (created from fvTolerances) - (controlDict) - for parallel processed cases, processor numbering updated from 1,2,... to 0,1,

• foamDebugSwitches Write out all library debug switches.

• foamInfoExec Interrogates a case and prints information to screen.

4 Parallel processing

• decomposePar Automatically decomposes a mesh and fields of a case for parallel execution of OpenFOAM.

• reconstructPar Reconstructs a mesh and fields of a case that is decomposed for parallel execution of OpenFOAM.

5 Post-processing

5.1 Data converters

• foamDataToFluent Translates OpenFOAM data to Fluent format.

• foamToDX Translates OpenFOAM data to OpenDX format.

• foamToEnsight Translates OpenFOAM data to EnSight format.

• foamToFieldview Write out the OpenFOAM mesh in Fieldview-UNS format (binary). See Fieldview Release 8 Reference Manual - Appendix D (Unstructured Data Format) Borrows various from uns/write_binary_uns.c from FieldView dist.

• foamToFieldview9 Write out the OpenFOAM mesh in Version 3.0 Fieldview-UNS format (binary). See Fieldview Release 9 Reference Manual - Appendix D (Unstructured Data Format) Borrows various from uns/write_binary_uns.c from FieldView dist.

• foamToVTK Legacy VTK file format writer. - handles volScalar, volVector, pointScalar, pointVector fields. - mesh topo changes. - both ascii and binary. - single time step writing. - write subset only. - automatic decomposition of cells; polygons on boundary undecomposed since handled by vtk

• smapToFoam Translates a STAR-CD SMAP data file into OpenFOAM field format.

5.2 Graphics

• dxFoamExec Post-processing graphics using openDX.

• ensight74FoamExec Module for EnSight 7.6 to read OpenFOAM data directly without translation.

• ensight76FoamExec Module for EnSight 7.6 to read OpenFOAM data directly without translation.

5.3 Stress field

• R Calculates and writes the Reynolds stress R for the current time step.

• Rcomponents Calculates and writes the scalar fields of the six components of the Reynolds stress R for each time in a database.

• stressComponents Calculates and writes the scalar fields of the six components of the stress tensor sigma for each time in a database.

5.4 Velocity field

• Co Configurable graph drawing program.

• divU Calculates and writes the divergence of velocity field U at each time in a database.

• enstrophy Calculates and writes the enstrophy of velocity field U at each time in a database.

• Lambda2 Calculates and writes the second largest eigenvalue of the sum of the square of the symmetrical and anti-symmetrical parts of the velocity gradient tensor, at each time in a database.

• Mach Calculates and writes the local Mach number from the velocity field U at each time in a database.

• magGradU Calculates and writes the scalar magnitude of velocity field U at each time in a database.

• magU Calculates and writes the scalar magnitude of the gradient of the velocity field U at each time in a database.

• Pe Calculates and writes the Pe number as a surfaceScalarField obtained from field phi at each time in a database.

• Q Calculates and writes the second invariant of the velocity gradient tensor for each time in a database.

• streamFunction Calculates and writes the stream function of velocity field U at each time in a database.

• Ucomponents Writes the three scalar fields, Ux, Uy and Uz, for each component of the velocity field U at each time in a database.

• uprime Calculates and writes the scalar field of uprime () at each time in a database.

• vorticity Calculates and writes the vorticity of velocity field U at each time in a database.

5.5 Walls

• checkYPlus Calculates and reports yPlus for all wall patches, for each time in a database.

• wallGradU Calculates and writes the gradient of U at the wall, wallGradU, for the current time step.

• wallShearStress Calculates and writes the wall shear stress for the current time step.

• yPlusLES Calculates the yPlus of the near-wall cells for an LES.

5.6 Miscellaneous

• engineCompRatio Calculate the geometric compression ratio. Note that if you have valves and/or extra volumes it will not work, since it calculates the volume at BDC and TCD.

• liftDrag Calculates the lift and drag for each time in a database.

• postChannel Post-processes data from channel flow calculations.

• ptot For each time in a database: calculate the total pressure.

• sample Sample field data with a choice of interpolation schemes, sampling options and write formats.

• sampleSurface Surface sampling. Runs in parallel (but does not merge points).

• wdot Calculates and writes wdot for each time in a database.

6 Pre-processing

• boxTurb Makes a box of turbulence which conforms to a given energy spectrum and is divergence free,

• engineSwirl Generates a swirling flow for engine calulations.

• FoamX Case management tool.

• mapFields Maps volume fields from one mesh to another, reading and interpolating all fields present in the time directory of both cases. Parallel and non-parallel cases are handled without the need to reconstruct them first.

7 Thermophysical

• adiabaticFlameT Calculates the adiabatic flame temperature for a given fuel over a range of unburnt temperatures and equivalence ratios.

• equilibriumCO Calculates the equilibrium level of carbon monoxide.

• equilibriumFlameT Calculates the equilibrium flame temperature for a given fuel and pressure for a range of unburnt gas temperatures and equivalence ratios; the effects of dissociation on , and are included.

• mixtureAdiabaticFlameT Calculates the adiabatic flame temperature for a given mixture at a given temperature.

• Sl Calculates and prints the laminar flame speed of a given fuel at a given pressure (bar), temperature (K) and equivalence ratio.