FreeFOAM The Cross-Platform CFD Toolkit
dynamicAlphaContactAngleFvPatchScalarField.C
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25 
29 #include <finiteVolume/volMesh.H>
30 
31 // * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
32 
35 (
36  const fvPatch& p,
38 )
39 :
41  theta0_(0.0),
42  uTheta_(0.0),
43  thetaA_(0.0),
44  thetaR_(0.0)
45 {}
46 
47 
50 (
52  const fvPatch& p,
54  const fvPatchFieldMapper& mapper
55 )
56 :
57  alphaContactAngleFvPatchScalarField(gcpsf, p, iF, mapper),
58  theta0_(gcpsf.theta0_),
59  uTheta_(gcpsf.uTheta_),
60  thetaA_(gcpsf.thetaA_),
61  thetaR_(gcpsf.thetaR_)
62 {}
63 
64 
67 (
68  const fvPatch& p,
70  const dictionary& dict
71 )
72 :
74  theta0_(readScalar(dict.lookup("theta0"))),
75  uTheta_(readScalar(dict.lookup("uTheta"))),
76  thetaA_(readScalar(dict.lookup("thetaA"))),
77  thetaR_(readScalar(dict.lookup("thetaR")))
78 {
79  evaluate();
80 }
81 
82 
85 (
87 )
88 :
90  theta0_(gcpsf.theta0_),
91  uTheta_(gcpsf.uTheta_),
92  thetaA_(gcpsf.thetaA_),
93  thetaR_(gcpsf.thetaR_)
94 {}
95 
96 
99 (
102 )
103 :
105  theta0_(gcpsf.theta0_),
106  uTheta_(gcpsf.uTheta_),
107  thetaA_(gcpsf.thetaA_),
108  thetaR_(gcpsf.thetaR_)
109 {}
110 
111 
112 // * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
113 
116 (
117  const fvPatchVectorField& Up,
118  const fvsPatchVectorField& nHat
119 ) const
120 {
121  if (uTheta_ < SMALL)
122  {
123  return tmp<scalarField>(new scalarField(size(), theta0_));
124  }
125 
126  vectorField nf = patch().nf();
127 
128  // Calculated the component of the velocity parallel to the wall
129  vectorField Uwall = Up.patchInternalField() - Up;
130  Uwall -= (nf & Uwall)*nf;
131 
132  // Find the direction of the interface parallel to the wall
133  vectorField nWall = nHat - (nf & nHat)*nf;
134 
135  // Normalise nWall
136  nWall /= (mag(nWall) + SMALL);
137 
138  // Calculate Uwall resolved normal to the interface parallel to
139  // the interface
140  scalarField uwall = nWall & Uwall;
141 
142  return theta0_ + (thetaA_ - thetaR_)*tanh(uwall/uTheta_);
143 }
144 
145 
147 {
149  os.writeKeyword("theta0") << theta0_ << token::END_STATEMENT << nl;
150  os.writeKeyword("uTheta") << uTheta_ << token::END_STATEMENT << nl;
151  os.writeKeyword("thetaA") << thetaA_ << token::END_STATEMENT << nl;
152  os.writeKeyword("thetaR") << thetaR_ << token::END_STATEMENT << nl;
153  writeEntry("value", os);
154 }
155 
156 
157 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
158 
159 namespace Foam
160 {
162  (
165  );
166 }
167 
168 
169 // ************************ vim: set sw=4 sts=4 et: ************************ //