Commit da667580 authored by sergio's avatar sergio
Browse files

BUG: Fixing area weighted pressure difference calculation for pressured based mode

parent 9b0cd898
......@@ -266,9 +266,7 @@ void Foam::activePressureForceBaffleVelocityFvPatchVectorField::updateCoeffs()
scalar valueDiff = 0;
if (fBased_)
{
// Add this side
// Add this side (p*area)
forAll(cyclicFaceCells, facei)
{
valueDiff +=p[cyclicFaceCells[facei]]*mag(initCyclicSf_[facei]);
......@@ -279,18 +277,10 @@ void Foam::activePressureForceBaffleVelocityFvPatchVectorField::updateCoeffs()
{
valueDiff -=p[nbrFaceCells[facei]]*mag(initCyclicSf_[facei]);
}
}
else //pressure based
{
forAll(cyclicFaceCells, facei)
{
valueDiff += p[cyclicFaceCells[facei]];
}
forAll(nbrFaceCells, facei)
if (!fBased_) //pressure based then weighted by area
{
valueDiff -= p[nbrFaceCells[facei]];
}
valueDiff =/ patch().magSf();
}
reduce(valueDiff, sumOp<scalar>());
......@@ -303,7 +293,7 @@ void Foam::activePressureForceBaffleVelocityFvPatchVectorField::updateCoeffs()
}
else
{
Info<< "Pressure difference = " << valueDiff << endl;
Info<< "Area-averaged pressure difference = " << valueDiff << endl;
}
}
......
......@@ -29,21 +29,19 @@ Group
Description
This boundary condition is applied to the flow velocity, to simulate the
opening or closure of a baffle due to local pressure or force changes,
by merging the behaviours of wall and cyclic conditions.
opening or closure of a baffle due to area averaged pressure or force delta,
between both sides of the baffle. This is achieved by merging the
behaviours of wall and cyclic baffles
The baffle joins two mesh regions, where the open fraction determines
the interpolation weights applied to each cyclic- and neighbour-patch
contribution. This means that this is boundary condition is meant to be
used in an extra wall beyond an existing cyclic patch pair. See PDRMesh
for more details.
used in an extra wall beyond an existing cyclic patch pair.
The baffle is activated when the pressure difference between master and
slave paches is positive and larger then minThresholdValue. The
orientation flag is used to to calculate the pressure difference bwetween
master-slave or slave-master.
The baffle is activated when the area weighted pressure difference between
master and slave paches is larger then minThresholdValue.
Once the threshold is crossed, this condition activated and continues to
Once the threshold is crossed, the baffle is activated and continues to
open or close at a fixed rate using
\f[
......@@ -91,7 +89,7 @@ Description
maxOpenFractionDelta 0.1;
minThresholdValue 0.01;
forceBased false;
opening 1;
opening true;
}
\endverbatim
......
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