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STYLE: centralize example dictionaries under etc/ (issue #1074)
- as well as being more convenient to find, this is necessary when the OpenFOAM installation is without sources or tutorials
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/*--------------------------------*- C++ -*----------------------------------*\
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| ========= | |
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| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
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| \\ / O peration | Version: v1812 |
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| \\ / A nd | Web: www.OpenFOAM.com |
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| \\/ M anipulation | |
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\*---------------------------------------------------------------------------*/
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FoamFile
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{
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version 2.0;
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format ascii;
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class dictionary;
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note "mesh decomposition control dictionary";
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object decomposeParDict;
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}
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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//- The total number of domains (mandatory)
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numberOfSubdomains 256;
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//- The decomposition method (mandatory)
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method scotch;
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// method hierarchical;
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// method simple;
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// method metis;
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// method manual;
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// method multiLevel;
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// method structured; // does 2D decomposition of structured mesh
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//- Optional region-wise decomposition.
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// Can specify a different method.
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// The number of subdomains can be less than the top-level numberOfSubdomains.
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regions
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{
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water
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{
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numberOfSubdomains 128;
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method metis;
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}
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".*solid"
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{
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numberOfSubdomains 4;
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method metis;
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}
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heater
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{
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numberOfSubdomains 1;
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method none;
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}
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}
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// Coefficients for the decomposition method are either as a
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// general "coeffs" dictionary or method-specific "<method>Coeffs".
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// For multiLevel, using multiLevelCoeffs only.
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multiLevelCoeffs
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{
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// multiLevel decomposition methods to apply in turn.
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// This is like hierarchical but fully general
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// - every method can be used at every level.
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// Only sub-dictionaries containing the keyword "method" are used.
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//
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level0
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{
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numberOfSubdomains 16;
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method scotch;
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}
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level1
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{
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numberOfSubdomains 2;
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method scotch;
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coeffs
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{
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n (2 1 1);
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delta 0.001;
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}
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}
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level2
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{
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numberOfSubdomains 8;
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// method simple;
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method scotch;
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}
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}
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multiLevelCoeffs
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{
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// Compact multiLevel specification, activated by the presence of the
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// keywords "method" and "domains"
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method scotch;
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domains (16 2 8);
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//// Or with implicit '16' for the first level with numberOfSubdomains=256
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//domains (2 8);
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}
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// Other example coefficients
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simpleCoeffs
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{
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n (2 1 1);
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// delta 0.001; //< default value = 0.001
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}
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hierarchicalCoeffs
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{
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n (1 2 1);
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// delta 0.001; //< default value = 0.001
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// order xyz; //< default order = xyz
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}
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metisCoeffs
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{
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/*
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processorWeights
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(
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1
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1
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1
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1
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);
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*/
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}
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scotchCoeffs
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{
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//processorWeights
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//(
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// 1
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// 1
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// 1
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// 1
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//);
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//writeGraph true;
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//strategy "b";
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}
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manualCoeffs
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{
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dataFile "decompositionData";
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}
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structuredCoeffs
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{
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// Patches to do 2D decomposition on. Structured mesh only; cells have
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// to be in 'columns' on top of patches.
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patches (movingWall);
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// Method to use on the 2D subset
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method scotch;
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}
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//- Use the volScalarField named here as a weight for each cell in the
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// decomposition. For example, use a particle population field to decompose
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// for a balanced number of particles in a lagrangian simulation.
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// weightField dsmcRhoNMean;
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//// Is the case distributed? Note: command-line argument -roots takes
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//// precedence
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//distributed yes;
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//
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//// Per slave (so nProcs-1 entries) the directory above the case.
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//roots
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//(
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// "/tmp"
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// "/tmp"
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//);
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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// Decomposition constraints
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/*
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constraints
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{
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baffles
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{
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//- Keep owner and neighbour of baffles on same processor (i.e.
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// keep it detectable as a baffle). Baffles are two boundary face
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// sharing the same points
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type preserveBaffles;
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enabled false;
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}
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faces
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{
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//- Keep owner and neighbour on same processor for faces in zones
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type preserveFaceZones;
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zones (".*");
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enabled false;
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}
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patches
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{
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//- Keep owner and neighbour on same processor for faces in patches
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// (only makes sense for cyclic patches. Not suitable for e.g.
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// cyclicAMI since these are not coupled on the patch level. Use
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// singleProcessorFaceSets for those)
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type preservePatches;
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patches (".*");
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enabled false;
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}
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processors
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{
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//- Keep all of faceSet on a single processor. This puts all cells
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// connected with a point, edge or face on the same processor.
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// (just having face connected cells might not guarantee a balanced
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// decomposition)
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// The processor can be -1 (the decompositionMethod chooses the
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// processor for a good load balance) or explicitly provided (upsets
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// balance)
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type singleProcessorFaceSets;
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sets ((f1 -1));
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enabled false;
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}
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refinement
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{
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//- Decompose cells such that all cell originating from single cell
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// end up on same processor
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type refinementHistory;
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enabled false;
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}
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geometric
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{
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type geometric;
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grow false;
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selection
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{
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box1
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{
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source box;
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min (-0.1 -0.01 -0.1);
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max (0.1 0.30 0.1);
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}
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ball
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{
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source sphere;
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origin (-0.1 -0.01 -0.1);
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radius 0.25;
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}
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blob
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{
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source surface;
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surfaceType triSurfaceMesh;
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surfaceName blob.obj;
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}
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}
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}
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}
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*/
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// Deprecated form of specifying decomposition constraints:
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//- Keep owner and neighbour on same processor for faces in zones:
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// preserveFaceZones (heater solid1 solid3);
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//- Keep owner and neighbour on same processor for faces in patches:
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// (makes sense only for cyclic patches. Not suitable for e.g. cyclicAMI
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// since these are not coupled on the patch level. Use
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// singleProcessorFaceSets for those)
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//preservePatches (cyclic_half0 cyclic_half1);
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//- Keep all of faceSet on a single processor. This puts all cells
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// connected with a point, edge or face on the same processor.
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// (just having face connected cells might not guarantee a balanced
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// decomposition)
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// The processor can be -1 (the decompositionMethod chooses the processor
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// for a good load balance) or explicitly provided (upsets balance).
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//singleProcessorFaceSets ((f0 -1));
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//- Keep owner and neighbour of baffles on same processor (i.e. keep it
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// detectable as a baffle). Baffles are two boundary face sharing the
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// same points.
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//preserveBaffles true;
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// ************************************************************************* //
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