289 lines
8.2 KiB
C
289 lines
8.2 KiB
C
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/*---------------------------------------------------------------------------*\
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========= |
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\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
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\\ / O peration |
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\\ / A nd | Copyright held by original author
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\\/ M anipulation |
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-------------------------------------------------------------------------------
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License
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This file is part of OpenFOAM.
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OpenFOAM is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the
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Free Software Foundation; either version 2 of the License, or (at your
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option) any later version.
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OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with OpenFOAM; if not, write to the Free Software Foundation,
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Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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\*---------------------------------------------------------------------------*/
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#include "dieselEngineValve.H"
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#include "engineTime.H"
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#include "polyMesh.H"
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#include "interpolateXY.H"
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#include "IFstream.H"
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// * * * * * * * * * * * * * Private Member Functions * * * * * * * * * * * //
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Foam::scalar Foam::dieselEngineValve::adjustCrankAngle(const scalar theta) const
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{
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if (theta < liftProfileStart_)
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{
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scalar adjustedTheta = theta;
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while (adjustedTheta < liftProfileStart_)
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{
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adjustedTheta += liftProfileEnd_ - liftProfileStart_;
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}
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return adjustedTheta;
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}
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else if (theta > liftProfileEnd_)
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{
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scalar adjustedTheta = theta;
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while (adjustedTheta > liftProfileEnd_)
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{
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adjustedTheta -= liftProfileEnd_ - liftProfileStart_;
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}
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return adjustedTheta;
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}
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else
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{
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return theta;
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}
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}
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// * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
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// Construct from components
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Foam::dieselEngineValve::dieselEngineValve
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(
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const word& name,
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const polyMesh& mesh,
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const autoPtr<coordinateSystem>& valveCS,
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const word& bottomPatchName,
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const word& poppetPatchName,
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const word& sidePatchName,
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const word& stemPatchName,
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const word& downInPortPatchName,
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const word& downInCylinderPatchName,
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const word& upInPortPatchName,
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const word& upInCylinderPatchName,
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const word& detachInCylinderPatchName,
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const word& detachInPortPatchName,
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const labelList& detachFaces,
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const scalar& detachTol,
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const graph& liftProfile,
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const scalar minLift,
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const scalar diameter
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)
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:
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name_(name),
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mesh_(mesh),
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engineDB_(refCast<const engineTime>(mesh.time())),
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csPtr_(valveCS),
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bottomPatch_(bottomPatchName, mesh.boundaryMesh()),
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poppetPatch_(poppetPatchName, mesh.boundaryMesh()),
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sidePatch_(sidePatchName, mesh.boundaryMesh()),
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stemPatch_(stemPatchName, mesh.boundaryMesh()),
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downInPortPatch_(downInPortPatchName, mesh.boundaryMesh()),
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downInCylinderPatch_(downInCylinderPatchName, mesh.boundaryMesh()),
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upInPortPatch_(upInPortPatchName, mesh.boundaryMesh()),
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upInCylinderPatch_(upInCylinderPatchName, mesh.boundaryMesh()),
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detachInCylinderPatch_(detachInCylinderPatchName, mesh.boundaryMesh()),
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detachInPortPatch_(detachInPortPatchName, mesh.boundaryMesh()),
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detachFaces_(detachFaces),
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detachTol_(detachTol),
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liftProfile_(liftProfile),
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liftProfileStart_(min(liftProfile_.x())),
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liftProfileEnd_(max(liftProfile_.x())),
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minLift_(minLift),
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diameter_(diameter)
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{}
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// Construct from dictionary
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Foam::dieselEngineValve::dieselEngineValve
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(
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const word& name,
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const polyMesh& mesh,
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const dictionary& dict
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)
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:
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name_(name),
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mesh_(mesh),
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engineDB_(refCast<const engineTime>(mesh_.time())),
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csPtr_
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(
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coordinateSystem::New
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(
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"coordinateSystem",
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dict.subDict("coordinateSystem")
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)
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),
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bottomPatch_(dict.lookup("bottomPatch"), mesh.boundaryMesh()),
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poppetPatch_(dict.lookup("poppetPatch"), mesh.boundaryMesh()),
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sidePatch_(dict.lookup("sidePatch"), mesh.boundaryMesh()),
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stemPatch_(dict.lookup("stemPatch"), mesh.boundaryMesh()),
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downInPortPatch_
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(
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dict.lookup("downInPortPatch"),
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mesh.boundaryMesh()
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),
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downInCylinderPatch_
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(
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dict.lookup("downInCylinderPatch"),
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mesh.boundaryMesh()
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),
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upInPortPatch_
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(
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dict.lookup("upInPortPatch"),
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mesh.boundaryMesh()
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),
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upInCylinderPatch_
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(
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dict.lookup("upInCylinderPatch"),
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mesh.boundaryMesh()
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),
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detachInCylinderPatch_
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(
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dict.lookup("detachInCylinderPatch"),
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mesh.boundaryMesh()
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),
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detachInPortPatch_
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(
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dict.lookup("detachInPortPatch"),
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mesh.boundaryMesh()
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),
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detachFaces_(dict.lookup("detachFaces")),
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detachTol_(readScalar(dict.lookup("detachTol"))),
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liftProfile_
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(
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"theta",
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"lift",
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name_,
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IFstream
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(
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mesh.time().path()/mesh.time().constant()/
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word(dict.lookup("liftProfileFile"))
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)()
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),
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liftProfileStart_(min(liftProfile_.x())),
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liftProfileEnd_(max(liftProfile_.x())),
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minLift_(readScalar(dict.lookup("minLift"))),
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diameter_(readScalar(dict.lookup("diameter")))
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{}
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// * * * * * * * * * * * * * * * * Destructor * * * * * * * * * * * * * * * //
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// * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
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Foam::scalar Foam::dieselEngineValve::lift(const scalar theta) const
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{
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return interpolateXY
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(
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adjustCrankAngle(theta),
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liftProfile_.x(),
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liftProfile_.y()
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);
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}
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bool Foam::dieselEngineValve::isOpen() const
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{
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return lift(engineDB_.theta()) >= minLift_;
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}
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Foam::scalar Foam::dieselEngineValve::curLift() const
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{
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return max
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(
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lift(engineDB_.theta()),
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minLift_
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);
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}
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Foam::scalar Foam::dieselEngineValve::curVelocity() const
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{
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return
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-(
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curLift()
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- max
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(
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lift(engineDB_.theta() - engineDB_.deltaTheta()),
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minLift_
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)
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)/(engineDB_.deltaT().value() + VSMALL);
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}
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Foam::labelList Foam::dieselEngineValve::movingPatchIDs() const
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{
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labelList mpIDs(2);
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label nMpIDs = 0;
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if (bottomPatch_.active())
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{
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mpIDs[nMpIDs] = bottomPatch_.index();
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nMpIDs++;
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}
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if (poppetPatch_.active())
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{
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mpIDs[nMpIDs] = poppetPatch_.index();
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nMpIDs++;
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}
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mpIDs.setSize(nMpIDs);
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return mpIDs;
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}
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void Foam::dieselEngineValve::writeDict(Ostream& os) const
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{
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os << nl << name() << nl << token::BEGIN_BLOCK;
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cs().writeDict(os);
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os << "bottomPatch " << bottomPatch_.name() << token::END_STATEMENT << nl
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<< "poppetPatch " << poppetPatch_.name() << token::END_STATEMENT << nl
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<< "sidePatch " << sidePatch_.name() << token::END_STATEMENT << nl
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<< "stemPatch " << stemPatch_.name() << token::END_STATEMENT << nl
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<< "downInPortPatch " << downInPortPatch_.name()
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<< token::END_STATEMENT << nl
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<< "downInCylinderPatch " << downInCylinderPatch_.name()
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<< token::END_STATEMENT << nl
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<< "upInPortPatch " << upInPortPatch_.name()
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<< token::END_STATEMENT << nl
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<< "upInCylinderPatch " << upInCylinderPatch_.name()
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<< token::END_STATEMENT << nl
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<< "detachInCylinderPatch " << detachInCylinderPatch_.name()
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<< token::END_STATEMENT << nl
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<< "detachInPortPatch " << detachInPortPatch_.name()
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<< token::END_STATEMENT << nl
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<< "detachFaces " << detachFaces_ << token::END_STATEMENT << nl
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<< "liftProfile " << nl << token::BEGIN_BLOCK
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<< liftProfile_ << token::END_BLOCK << token::END_STATEMENT << nl
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<< "minLift " << minLift_ << token::END_STATEMENT << nl
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<< "diameter " << diameter_ << token::END_STATEMENT << nl
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<< token::END_BLOCK << endl;
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}
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// ************************************************************************* //
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