1 /*---------------------------------------------------------------------------*\
3 \\ / F ield | OpenFOAM: The Open Source CFD Toolbox
5 \\ / A nd | Copyright (C) 2011 OpenFOAM Foundation
7 -------------------------------------------------------------------------------
9 This file is part of OpenFOAM.
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13 the Free Software Foundation, either version 3 of the License, or
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28 Class with limiter function which returns the limiter for the
29 Phi differencing scheme.
31 Used in conjunction with the template class PhiScheme.
36 \*---------------------------------------------------------------------------*/
43 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
48 /*---------------------------------------------------------------------------*\
49 Class PhiLimiter Declaration
50 \*---------------------------------------------------------------------------*/
58 PhiLimiter(Istream& is)
64 FatalIOErrorIn("PhiLimiter(Istream& is)", is)
65 << "coefficient = " << k_
66 << " should be >= 0 and <= 1"
67 << exit(FatalIOError);
73 const scalar cdWeight,
74 const scalar faceFlux,
81 scalar phiP = Sf&PhiP;
82 scalar phiN = Sf&PhiN;
95 scalar phiCD = cdWeight*phiP + (1 - cdWeight)*phiN;
97 // Calculate the effective limiter for the Phi interpolation
99 // (1.0 - k_) + k_*(faceFlux - phiU)/stabilise(phiCD - phiU, SMALL);
102 ((faceFlux - phiU)/stabilise(phiCD - phiU, SMALL) + k_);
104 // Limit the limiter between upwind and central
105 return max(min(PLimiter, 1), 0);
110 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
112 } // End namespace Foam
114 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
118 // ************************************************************************* //