mirror of
https://develop.openfoam.com/Development/openfoam.git
synced 2025-11-28 03:28:01 +00:00
ENH: forces function object - added data output into bins
This commit is contained in:
andy
@ -43,7 +43,78 @@ License
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defineTypeNameAndDebug(Foam::forces, 0);
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// * * * * * * * * * * * * * Private Member Functions * * * * * * * * * * * //
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// * * * * * * * * * * * * Protected Member Functions * * * * * * * * * * * //
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Foam::fileName Foam::forces::baseFileDir() const
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{
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fileName baseDir;
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if (Pstream::parRun())
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{
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// Put in undecomposed case (Note: gives problems for
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// distributed data running)
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baseDir = obr_.time().path()/".."/name_;
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}
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else
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{
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baseDir = obr_.time().path()/name_;
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}
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return baseDir;
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}
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void Foam::forces::makeFile()
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{
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// Create the forces file if not already created
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if (forcesFilePtr_.empty())
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{
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if (debug)
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{
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Info<< "Creating forces file" << endl;
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}
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// File update
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if (Pstream::master())
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{
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word startTimeName =
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obr_.time().timeName(obr_.time().startTime().value());
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fileName forcesDir = baseFileDir()/startTimeName;
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// Create directory if does not exist.
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mkDir(forcesDir);
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// Open new file at start up
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forcesFilePtr_.reset(new OFstream(forcesDir/(type() + ".dat")));
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// Add headers to output data
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writeFileHeader();
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}
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}
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}
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void Foam::forces::writeFileHeader()
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{
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if (forcesFilePtr_.valid())
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{
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forcesFilePtr_()
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<< "# Time" << tab
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<< "forces(pressure, viscous) moment(pressure, viscous)";
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if (localSystem_)
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{
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forcesFilePtr_()
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<< tab
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<< "local forces(pressure, viscous) "
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<< "local moment(pressure, viscous)";
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}
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forcesFilePtr_()<< endl;
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}
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}
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Foam::tmp<Foam::volSymmTensorField> Foam::forces::devRhoReff() const
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{
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@ -167,6 +238,85 @@ Foam::scalar Foam::forces::rho(const volScalarField& p) const
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}
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void Foam::forces::applyBins
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(
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const label patchI,
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const vectorField fN,
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const vectorField Md,
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const vectorField fT
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)
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{
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if (nBin_ == 1)
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{
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force_[0][0] = sum(fN);
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force_[1][0] = sum(fT);
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moment_[0][0] = sum(Md ^ fN);
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moment_[1][0] = sum(Md ^ fT);
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}
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else
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{
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const fvMesh& mesh = refCast<const fvMesh>(obr_);
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const vectorField& Cf = mesh.C().boundaryField()[patchI];
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scalarField d((Cf & binDir_) - binMin_);
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forAll(d, i)
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{
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label binI = floor(d[i]/binDx_);
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force_[0][binI] += fN[i];
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force_[1][binI] += fT[i];
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moment_[0][binI] += Md[i]^fN[i];
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moment_[1][binI] += Md[i]^fT[i];
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}
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}
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}
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void Foam::forces::writeBins() const
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{
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if (nBin_ == 1)
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{
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return;
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}
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autoPtr<writer<vector> > binWriterPtr(writer<vector>::New(binFormat_));
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coordSet axis("forces", "distance", binPoints_, mag(binPoints_));
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fileName forcesDir = baseFileDir()/"bins"/obr_.time().timeName();
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mkDir(forcesDir);
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if (log_)
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{
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Info<< " Writing bins to " << forcesDir << endl;
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}
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wordList fieldNames(IStringStream("(pressure viscous)")());
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OFstream osForce(forcesDir/"force");
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binWriterPtr->write(axis, fieldNames, force_, osForce);
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OFstream osMoment(forcesDir/"moment");
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binWriterPtr->write(axis, fieldNames, moment_, osMoment);
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if (localSystem_)
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{
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List<Field<vector> > localForce(2);
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List<Field<vector> > localMoment(2);
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localForce[0] = coordSys_.localVector(force_[0]);
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localForce[1] = coordSys_.localVector(force_[1]);
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localMoment[0] = coordSys_.localVector(moment_[0]);
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localMoment[1] = coordSys_.localVector(moment_[1]);
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OFstream osLocalForce(forcesDir/"force_local");
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binWriterPtr->write(axis, fieldNames, localForce, osLocalForce);
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OFstream osLocalMoment(forcesDir/"moment_local");
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binWriterPtr->write(axis, fieldNames, localMoment, osLocalMoment);
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}
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}
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// * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
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Foam::forces::forces
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@ -181,6 +331,8 @@ Foam::forces::forces
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obr_(obr),
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active_(true),
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log_(false),
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force_(2),
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moment_(2),
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patchSet_(),
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pName_(word::null),
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UName_(word::null),
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@ -191,6 +343,12 @@ Foam::forces::forces
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pRef_(0),
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coordSys_(),
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localSystem_(false),
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nBin_(1),
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binDir_(vector::zero),
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binDx_(0.0),
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binMin_(GREAT),
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binPoints_(),
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binFormat_("undefined"),
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forcesFilePtr_(NULL)
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{
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// Check if the available mesh is an fvMesh otherise deactivate
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@ -231,6 +389,8 @@ Foam::forces::forces
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obr_(obr),
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active_(true),
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log_(false),
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force_(2),
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moment_(2),
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patchSet_(patchSet),
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pName_(pName),
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UName_(UName),
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@ -241,6 +401,12 @@ Foam::forces::forces
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pRef_(pRef),
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coordSys_(coordSys),
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localSystem_(false),
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nBin_(1),
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binDir_(vector::zero),
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binDx_(0.0),
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binMin_(GREAT),
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binPoints_(),
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binFormat_("undefined"),
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forcesFilePtr_(NULL)
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{}
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@ -261,11 +427,9 @@ void Foam::forces::read(const dictionary& dict)
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directForceDensity_ = dict.lookupOrDefault("directForceDensity", false);
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const fvMesh& mesh = refCast<const fvMesh>(obr_);
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const polyBoundaryMesh& pbm = mesh.boundaryMesh();
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patchSet_ = mesh.boundaryMesh().patchSet
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(
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wordReList(dict.lookup("patches"))
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);
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patchSet_ = pbm.patchSet(wordReList(dict.lookup("patches")));
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if (directForceDensity_)
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{
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@ -334,68 +498,77 @@ void Foam::forces::read(const dictionary& dict)
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coordSys_ = coordinateSystem(dict, obr_);
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localSystem_ = true;
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}
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}
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}
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void Foam::forces::makeFile()
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{
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// Create the forces file if not already created
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if (forcesFilePtr_.empty())
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{
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if (debug)
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// read bin information if present
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if (dict.readIfPresent<label>("nBin", nBin_))
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{
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Info<< "Creating forces file." << endl;
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}
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// File update
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if (Pstream::master())
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{
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fileName forcesDir;
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word startTimeName =
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obr_.time().timeName(obr_.time().startTime().value());
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if (Pstream::parRun())
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if (nBin_ < 0)
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{
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// Put in undecomposed case (Note: gives problems for
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// distributed data running)
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forcesDir = obr_.time().path()/".."/name_/startTimeName;
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FatalIOErrorIn
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(
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"void Foam::forces::read(const dictionary&)", dict
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) << "Number of bins (nBin) must be zero or greater"
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<< exit(FatalIOError);
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}
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else
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else if ((nBin_ == 0) || (nBin_ == 1))
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{
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forcesDir = obr_.time().path()/name_/startTimeName;
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nBin_ = 1;
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force_[0].setSize(1);
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force_[1].setSize(1);
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moment_[0].setSize(1);
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moment_[1].setSize(1);
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}
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// Create directory if does not exist.
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mkDir(forcesDir);
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if (nBin_ > 1)
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{
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dict.lookup("binDir") >> binDir_;
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binDir_ /= mag(binDir_);
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// Open new file at start up
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forcesFilePtr_.reset(new OFstream(forcesDir/(type() + ".dat")));
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binMin_ = GREAT;
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scalar binMax = -GREAT;
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forAllConstIter(labelHashSet, patchSet_, iter)
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{
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label patchI = iter.key();
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const polyPatch& pp = pbm[patchI];
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scalarField d(pp.faceCentres() & binDir_);
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binMin_ = min(min(d), binMin_);
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binMax = max(max(d), binMax);
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}
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reduce(binMin_, minOp<scalar>());
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reduce(binMax, maxOp<scalar>());
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// Add headers to output data
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writeFileHeader();
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// slightly boost binMax so that region of interest is fully
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// within bounds
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binMax = 1.0001*(binMax - binMin_) + binMin_;
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binDx_ = (binMax - binMin_)/scalar(nBin_);
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// create the bin points used for writing
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binPoints_.setSize(nBin_);
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forAll(binPoints_, i)
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{
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binPoints_[i] = (i + 0.5)*binDir_*binDx_;
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}
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dict.lookup("binFormat") >> binFormat_;
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// allocate storage for forces and moments
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forAll(force_, i)
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{
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force_[i].setSize(nBin_);
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moment_[i].setSize(nBin_);
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}
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}
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}
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}
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}
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void Foam::forces::writeFileHeader()
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{
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if (forcesFilePtr_.valid())
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{
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forcesFilePtr_()
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<< "# Time" << tab
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<< "forces(pressure, viscous) moment(pressure, viscous)";
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if (localSystem_)
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if (nBin_ == 1)
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{
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forcesFilePtr_()
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<< tab
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<< "local forces(pressure, viscous) "
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<< "local moment(pressure, viscous)";
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// allocate storage for forces and moments
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force_[0].setSize(1);
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force_[1].setSize(1);
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moment_[0].setSize(1);
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moment_[1].setSize(1);
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}
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forcesFilePtr_()<< endl;
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}
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}
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@ -414,71 +587,65 @@ void Foam::forces::end()
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void Foam::forces::write()
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{
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if (active_)
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if (!active_)
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{
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// Create the forces file if not already created
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makeFile();
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return;
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}
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forcesMoments fm = calcForcesMoment();
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// Create the forces file if not already created
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makeFile();
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if (Pstream::master())
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calcForcesMoment();
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if (Pstream::master())
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{
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if (log_)
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{
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if (log_)
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{
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Info<< "forces output:" << nl
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<< " forces(pressure, viscous)" << fm.first() << nl
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<< " moment(pressure, viscous)" << fm.second() << nl;
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}
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forcesFilePtr_() << obr_.time().value() << tab << fm;
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if (localSystem_)
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{
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forcesMoments fmLocal;
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fmLocal.first().first() =
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coordSys_.localVector(fm.first().first());
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fmLocal.first().second() =
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coordSys_.localVector(fm.first().second());
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fmLocal.second().first() =
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coordSys_.localVector(fm.second().first());
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fmLocal.second().second() =
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coordSys_.localVector(fm.second().second());
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forcesFilePtr_() << tab << fmLocal;
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if (log_)
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{
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Info<< " local:" << nl
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<< " forces(pressure, viscous)" << fmLocal.first()
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<< nl
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<< " moment(pressure, viscous)" << fmLocal.second()
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<< nl;
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}
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}
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forcesFilePtr_() << endl;
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if (log_)
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{
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Info<< endl;
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}
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Info<< type() << " output:" << nl
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<< " forces(pressure,viscous)"
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<< "(" << sum(force_[0]) << "," << sum(force_[1]) << ")" << nl
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<< " moment(pressure,viscous)"
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<< "(" << sum(moment_[0]) << "," << sum(moment_[1]) << ")"
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<< nl;
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}
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forcesFilePtr_() << obr_.time().value() << tab
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<< "(" << sum(force_[0]) << "," << sum(force_[1]) << ") "
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<< "(" << sum(moment_[0]) << "," << sum(moment_[1]) << ")"
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<< endl;
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if (localSystem_)
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{
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vectorField localForceP(coordSys_.localVector(force_[0]));
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vectorField localForceV(coordSys_.localVector(force_[1]));
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vectorField localMomentP(coordSys_.localVector(moment_[0]));
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vectorField localMomentV(coordSys_.localVector(moment_[1]));
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forcesFilePtr_() << obr_.time().value() << tab
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<< "(" << sum(localForceP) << "," << sum(localForceV) << ") "
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<< "(" << sum(localMomentP) << "," << sum(localMomentV) << ")"
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<< endl;
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}
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writeBins();
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if (log_)
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{
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Info<< endl;
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}
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forcesFilePtr_() << endl;
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}
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}
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Foam::forces::forcesMoments Foam::forces::calcForcesMoment() const
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void Foam::forces::calcForcesMoment()
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{
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forcesMoments fm
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(
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pressureViscous(vector::zero, vector::zero),
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pressureViscous(vector::zero, vector::zero)
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);
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force_[0] = vector::zero;
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force_[1] = vector::zero;
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moment_[0] = vector::zero;
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moment_[1] = vector::zero;
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if (directForceDensity_)
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{
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@ -491,32 +658,28 @@ Foam::forces::forcesMoments Foam::forces::calcForcesMoment() const
|
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forAllConstIter(labelHashSet, patchSet_, iter)
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{
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label patchi = iter.key();
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label patchI = iter.key();
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|
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vectorField Md
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(
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mesh.C().boundaryField()[patchi] - coordSys_.origin()
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mesh.C().boundaryField()[patchI] - coordSys_.origin()
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);
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scalarField sA(mag(Sfb[patchi]));
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scalarField sA(mag(Sfb[patchI]));
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// Normal force = surfaceUnitNormal * (surfaceNormal & forceDensity)
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// Normal force = surfaceUnitNormal*(surfaceNormal & forceDensity)
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vectorField fN
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(
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Sfb[patchi]/sA
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Sfb[patchI]/sA
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*(
|
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Sfb[patchi] & fD.boundaryField()[patchi]
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Sfb[patchI] & fD.boundaryField()[patchI]
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)
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);
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fm.first().first() += sum(fN);
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fm.second().first() += sum(Md ^ fN);
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// Tangential force (total force minus normal fN)
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vectorField fT(sA*fD.boundaryField()[patchi] - fN);
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vectorField fT(sA*fD.boundaryField()[patchI] - fN);
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fm.first().second() += sum(fT);
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fm.second().second() += sum(Md ^ fT);
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applyBins(patchI, fN, Md, fT);
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}
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}
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else
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@ -538,28 +701,38 @@ Foam::forces::forcesMoments Foam::forces::calcForcesMoment() const
|
||||
|
||||
forAllConstIter(labelHashSet, patchSet_, iter)
|
||||
{
|
||||
label patchi = iter.key();
|
||||
label patchI = iter.key();
|
||||
|
||||
vectorField Md
|
||||
(
|
||||
mesh.C().boundaryField()[patchi] - coordSys_.origin()
|
||||
mesh.C().boundaryField()[patchI] - coordSys_.origin()
|
||||
);
|
||||
|
||||
vectorField pf(Sfb[patchi]*(p.boundaryField()[patchi] - pRef));
|
||||
vectorField pf
|
||||
(
|
||||
rho(p)*Sfb[patchI]*(p.boundaryField()[patchI] - pRef)
|
||||
);
|
||||
|
||||
fm.first().first() += rho(p)*sum(pf);
|
||||
fm.second().first() += rho(p)*sum(Md ^ pf);
|
||||
vectorField vf(Sfb[patchI] & devRhoReffb[patchI]);
|
||||
|
||||
vectorField vf(Sfb[patchi] & devRhoReffb[patchi]);
|
||||
|
||||
fm.first().second() += sum(vf);
|
||||
fm.second().second() += sum(Md ^ vf);
|
||||
applyBins(patchI, pf, Md, vf);
|
||||
}
|
||||
}
|
||||
|
||||
reduce(fm, sumOp());
|
||||
Pstream::listCombineGather(force_, plusEqOp<vectorField>());
|
||||
Pstream::listCombineGather(moment_, plusEqOp<vectorField>());
|
||||
}
|
||||
|
||||
return fm;
|
||||
|
||||
Foam::vector Foam::forces::forceEff() const
|
||||
{
|
||||
return sum(force_[0]) + sum(force_[1]);
|
||||
}
|
||||
|
||||
|
||||
Foam::vector Foam::forces::momentEff() const
|
||||
{
|
||||
return sum(moment_[0]) + sum(moment_[1]);
|
||||
}
|
||||
|
||||
|
||||
|
||||
@ -2,7 +2,7 @@
|
||||
========= |
|
||||
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
|
||||
\\ / O peration |
|
||||
\\ / A nd | Copyright (C) 2011 OpenFOAM Foundation
|
||||
\\ / A nd | Copyright (C) 2011-2012 OpenFOAM Foundation
|
||||
\\/ M anipulation |
|
||||
-------------------------------------------------------------------------------
|
||||
License
|
||||
@ -31,6 +31,13 @@ Description
|
||||
Member function forces::write() calculates the forces/moments and
|
||||
writes the forces/moments into the file \<timeDir\>/forces.dat
|
||||
|
||||
The data can optionally be collected into bins, using e.g.
|
||||
\verbaitim
|
||||
nBin 20; // output data into bins
|
||||
binDir (1 0 0); // bin direction
|
||||
binFormat gnuplot;
|
||||
\endverbatim
|
||||
|
||||
Note
|
||||
The centre of rotation for moment calculations can either be specified
|
||||
by an \c CofR entry, or be taken from origin of the local coordinateSystem.
|
||||
@ -66,6 +73,7 @@ SourceFiles
|
||||
#include "OFstream.H"
|
||||
#include "Switch.H"
|
||||
#include "pointFieldFwd.H"
|
||||
#include "writer.H"
|
||||
|
||||
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
|
||||
|
||||
@ -83,46 +91,9 @@ class mapPolyMesh;
|
||||
|
||||
class forces
|
||||
{
|
||||
public:
|
||||
|
||||
// Tuple for pressure (.first()) and viscous (.second()) forces
|
||||
typedef Tuple2<vector, vector> pressureViscous;
|
||||
|
||||
// Tuple for forces (.first()) and moment (.second())
|
||||
// pressure/viscous forces Tuples.
|
||||
typedef Tuple2<pressureViscous, pressureViscous> forcesMoments;
|
||||
|
||||
//- Sum operation class to accumulate pressure/viscous forces and moments
|
||||
class sumOp
|
||||
{
|
||||
public:
|
||||
|
||||
forcesMoments operator()
|
||||
(
|
||||
const forcesMoments& fm1,
|
||||
const forcesMoments& fm2
|
||||
) const
|
||||
{
|
||||
return forcesMoments
|
||||
(
|
||||
pressureViscous
|
||||
(
|
||||
fm1.first().first() + fm2.first().first(),
|
||||
fm1.first().second() + fm2.first().second()
|
||||
),
|
||||
pressureViscous
|
||||
(
|
||||
fm1.second().first() + fm2.second().first(),
|
||||
fm1.second().second() + fm2.second().second()
|
||||
)
|
||||
);
|
||||
}
|
||||
};
|
||||
|
||||
|
||||
protected:
|
||||
|
||||
// Private data
|
||||
// Protected data
|
||||
|
||||
//- Name of this set of forces,
|
||||
// Also used as the name of the probes directory.
|
||||
@ -130,12 +101,19 @@ protected:
|
||||
|
||||
const objectRegistry& obr_;
|
||||
|
||||
//- on/off switch
|
||||
//- On/off switch
|
||||
bool active_;
|
||||
|
||||
//- Switch to send output to Info as well as to file
|
||||
Switch log_;
|
||||
|
||||
//- Pressure and viscous force per bin
|
||||
List<Field<vector> > force_;
|
||||
|
||||
//- Pressure and viscous pressure per bin
|
||||
List<Field<vector> > moment_;
|
||||
|
||||
|
||||
// Read from dictionary
|
||||
|
||||
//- Patches to integrate forces over
|
||||
@ -169,11 +147,35 @@ protected:
|
||||
bool localSystem_;
|
||||
|
||||
|
||||
// Bin information
|
||||
|
||||
//- Number of bins
|
||||
label nBin_;
|
||||
|
||||
//- Direction used to determine bin orientation
|
||||
vector binDir_;
|
||||
|
||||
//- Distance between bin divisions
|
||||
scalar binDx_;
|
||||
|
||||
//- Minimum bin bounds
|
||||
scalar binMin_;
|
||||
|
||||
//- Bin positions along binDir
|
||||
List<point> binPoints_;
|
||||
|
||||
//- Write format for bin data
|
||||
word binFormat_;
|
||||
|
||||
|
||||
//- Forces/moment file ptr
|
||||
autoPtr<OFstream> forcesFilePtr_;
|
||||
|
||||
|
||||
// Private Member Functions
|
||||
// Protected Member Functions
|
||||
|
||||
//- Return the base file directory for output
|
||||
fileName baseFileDir() const;
|
||||
|
||||
//- If the forces file has not been created create it
|
||||
void makeFile();
|
||||
@ -191,6 +193,18 @@ protected:
|
||||
// otherwise return 1
|
||||
scalar rho(const volScalarField& p) const;
|
||||
|
||||
//- Accumulate bin data
|
||||
void applyBins
|
||||
(
|
||||
const label patchI,
|
||||
const vectorField fN,
|
||||
const vectorField Md,
|
||||
const vectorField fT
|
||||
);
|
||||
|
||||
//- Helper function to write bin data
|
||||
void writeBins() const;
|
||||
|
||||
//- Disallow default bitwise copy construct
|
||||
forces(const forces&);
|
||||
|
||||
@ -256,8 +270,14 @@ public:
|
||||
//- Write the forces
|
||||
virtual void write();
|
||||
|
||||
//- Calculate and return forces and moment
|
||||
virtual forcesMoments calcForcesMoment() const;
|
||||
//- Calculate the forces and moments
|
||||
virtual void calcForcesMoment();
|
||||
|
||||
//- Return the total force
|
||||
virtual vector forceEff() const;
|
||||
|
||||
//- Return the total moment
|
||||
virtual vector momentEff() const;
|
||||
|
||||
//- Update for changes of mesh
|
||||
virtual void updateMesh(const mapPolyMesh&)
|
||||
|
||||
Reference in New Issue
Block a user