86 lines
2.6 KiB
C++
86 lines
2.6 KiB
C++
{
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volVectorField::GeometricBoundaryField& Upatches = U.boundaryField();
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const volTensorField::GeometricBoundaryField& gradUpatches =
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gradU.boundaryField();
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const surfaceVectorField::GeometricBoundaryField& Apatches =
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mesh.Sf().boundaryField();
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const surfaceScalarField::GeometricBoundaryField& magApatches =
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mesh.magSf().boundaryField();
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vectorField nGradPatch = Apatches[gradPatch]/magApatches[gradPatch];
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vectorField nDirPatch = Apatches[dirPatch]/magApatches[dirPatch];
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// Update contact
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contactPair.updateContact(U);
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reversePair.updateContact(U);
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const scalarField& touchFraction = contactPair.touchFraction();
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const scalarField& reverseFraction = reversePair.touchFraction();
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//Info << "touchFraction: " << touchFraction << endl;
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// Mark contact surfaces
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contactArea.boundaryField()[dirPatch] = touchFraction;
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contactArea.boundaryField()[gradPatch] = reverseFraction;
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// Cast will fall over in incorrect
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directionMixedFvPatchVectorField& UpatchDir =
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refCast<directionMixedFvPatchVectorField>(Upatches[dirPatch]);
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// set the traction and value for directionMixed patch
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UpatchDir.valueFraction() =
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(1.0 - urf)*UpatchDir.valueFraction()
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+ I*urf*touchFraction;
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// UpatchDir.value() = contactPair.slaveDisplacement();
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UpatchDir.refValue() =
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nDirPatch*
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min
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(
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(nDirPatch & UpatchDir) + urf*touchFraction*touchTolerance,
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(nDirPatch & contactPair.slaveDisplacement())
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);
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// traction[dirPatch] = 0 because there's no friction!!
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// set the traction for the gradient patch (using the new valueFraction!)
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vectorField newTraction =
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nGradPatch*
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(
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reversePair.slavePressure
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(
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nDirPatch &
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(
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mu.value()*
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(
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gradUpatches[dirPatch]
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+ gradUpatches[dirPatch].T()
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)
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+ I*(lambda.value()*tr(gradUpatches[dirPatch]))
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) & nDirPatch
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)
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);
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// Info<< "contact: "
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// <<
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// (nDirPatch &
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// (
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// mu.value()*
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// (
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// gradUpatches[dirPatch]
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// + gradUpatches[dirPatch].T()
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// )
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// + I*(lambda.value()*tr(gradUpatches[dirPatch]))
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// ) & nDirPatch)*rho.value()
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// << endl;
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traction[gradPatch] =
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(1.0 - urf)*traction[gradPatch]
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+ urf*newTraction*reverseFraction;
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}
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