/usr/include/freefoam/incompressibleRASModels/LienLeschzinerLowReSetWallDissipation.H is in libfreefoam-dev 0.1.0+dfsg-1build1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 | // Set the dissipation in the near-wall cell to the value prescribed by the
// Lien-Leschziner low-Re model with Wolfstein length-scale prescription
{
labelList cellBoundaryFaceCount(epsilon_.size(), 0);
//- use constant Cmu for epsilon in the near-wall cell
scalar Cmu75 = pow(Cmu_.value(), 0.75);
const fvPatchList& patches = mesh_.boundary();
//- Initialise the near-wall epsilon field to zero
forAll(patches, patchi)
{
const fvPatch& curPatch = patches[patchi];
if (isA<wallFvPatch>(curPatch))
{
forAll(curPatch, facei)
{
label faceCelli = curPatch.faceCells()[facei];
epsilon_[faceCelli] = 0.0;
}
}
}
forAll(patches, patchi)
{
const fvPatch& curPatch = patches[patchi];
if (isA<wallFvPatch>(curPatch))
{
forAll(curPatch, facei)
{
label faceCelli = curPatch.faceCells()[facei];
// For corner cells (with two boundary or more faces),
// epsilon in the near-wall cell are calculated as an average
cellBoundaryFaceCount[faceCelli]++;
epsilon_[faceCelli] +=
Cmu75*pow(k_[faceCelli], 1.5)
/(
kappa_.value()*y_[faceCelli]
*(1.0 - exp(-Aepsilon_.value()*yStar_[faceCelli]))
)
*exp(-Amu_.value()*sqr(yStar_[faceCelli]));
}
}
}
// perform the averaging
forAll(patches, patchi)
{
const fvPatch& curPatch = patches[patchi];
if (isA<wallFvPatch>(curPatch))
{
forAll(curPatch, facei)
{
label faceCelli = curPatch.faceCells()[facei];
epsilon_[faceCelli] /= cellBoundaryFaceCount[faceCelli];
}
}
}
}
// ************************ vim: set sw=4 sts=4 et: ************************ //
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