FreeFOAM The Cross-Platform CFD Toolkit
wallNonlinearViscosityI.H
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23 
24 Global
25  wallNonlinearViscosity
26 
27 Description
28  Calculate wall viscosity for non-linear models
29 
30 \*---------------------------------------------------------------------------*/
31 
32 {
33  const fvPatchList& patches = mesh_.boundary();
34 
35  const scalar yPlusLam = this->yPlusLam(kappa_.value(), E_.value());
36 
37  forAll(patches, patchi)
38  {
39  const fvPatch& curPatch = patches[patchi];
40 
41  if (isA<wallFvPatch>(curPatch))
42  {
43  const scalarField& nuw = nu().boundaryField()[patchi];
44  scalarField& nutw = nut_.boundaryField()[patchi];
45 
46  forAll(curPatch, facei)
47  {
48  label faceCelli = curPatch.faceCells()[facei];
49 
50  //- Using local Cmu
51  scalar Cmu25 = pow(Cmu_[faceCelli], 0.25);
52 
53  scalar yPlus =
54  Cmu25*y_[patchi][facei]*sqrt(k_[faceCelli])/nuw[facei];
55 
56  if (yPlus > yPlusLam)
57  {
58  nutw[facei] =
59  nuw[facei]
60  *(yPlus*kappa_.value()/log(E_.value()*yPlus) - 1);
61  }
62  else
63  {
64  nutw[facei] = 0.0;
65  }
66  }
67  }
68  }
69 }
70 
71 
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