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BinghamPlastic: Change definition of shear-rate by 1/sqrt(2)

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Resolves bug-report http://www.openfoam.org/mantisbt/view.php?id=1552
This commit is contained in:
Henry
2015-03-02 22:27:39 +00:00
parent 6563df8eff
commit 00ebf8e153
6 changed files with 8 additions and 11 deletions
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4
applications/solvers/multiphase/driftFluxFoam/mixtureViscosityModels/BinghamPlastic/BinghamPlastic.C
View File

@ -2,7 +2,7 @@
========= | ========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox \\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration | \\ / O peration |
\\ / A nd | Copyright (C) 2014 OpenFOAM Foundation \\ / A nd | Copyright (C) 2014-2015 OpenFOAM Foundation
\\/ M anipulation | \\/ M anipulation |
------------------------------------------------------------------------------- -------------------------------------------------------------------------------
License License
@ -112,7 +112,7 @@ Foam::mixtureViscosityModels::BinghamPlastic::mu
( (
tauy tauy
/( /(
mag(fvc::grad(U_)) sqrt(2.0)*mag(symm(fvc::grad(U_)))
+ 1.0e-4*(tauy + tauySmall)/mup + 1.0e-4*(tauy + tauySmall)/mup
) )
+ mup, + mup,

4
applications/solvers/multiphase/driftFluxFoam/mixtureViscosityModels/BinghamPlastic/BinghamPlastic.H
View File

@ -2,7 +2,7 @@
========= | ========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox \\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration | \\ / O peration |
\\ / A nd | Copyright (C) 2014 OpenFOAM Foundation \\ / A nd | Copyright (C) 2014-2015 OpenFOAM Foundation
\\/ M anipulation | \\/ M anipulation |
------------------------------------------------------------------------------- -------------------------------------------------------------------------------
License License
@ -27,6 +27,8 @@ Class
Description Description
Viscosity correction model for Bingham plastics. Viscosity correction model for Bingham plastics.
The strain-rate used is defined as sqrt(2.0)*mag(symm(grad(U)))
SourceFiles SourceFiles
BinghamPlastic.C BinghamPlastic.C

5
applications/solvers/multiphase/driftFluxFoam/mixtureViscosityModels/mixtureViscosityModel/mixtureViscosityModel.H
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@ -33,11 +33,6 @@ Class
Description Description
An abstract base class for incompressible mixtureViscosityModels. An abstract base class for incompressible mixtureViscosityModels.
The strain rate is defined by:
mag(symm(grad(U)))
SourceFiles SourceFiles
mixtureViscosityModel.C mixtureViscosityModel.C
mixtureViscosityModelNew.C mixtureViscosityModelNew.C

2
tutorials/multiphase/driftFluxFoam/ras/dahl/constant/transportProperties
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@ -26,7 +26,7 @@ sludge
coeff 0.00023143; coeff 0.00023143;
exponent 179.26; exponent 179.26;
BinghamCoeff 0.00042189; BinghamCoeff 0.0005966;
BinghamExponent 1050.8; BinghamExponent 1050.8;
BinghamOffset 0; BinghamOffset 0;

2
tutorials/multiphase/driftFluxFoam/ras/mixerVessel2D/constant/transportProperties
View File

@ -26,7 +26,7 @@ sludge
coeff 0.00023143; coeff 0.00023143;
exponent 179.26; exponent 179.26;
BinghamCoeff 0.00042189; BinghamCoeff 0.0005966;
BinghamExponent 1050.8; BinghamExponent 1050.8;
BinghamOffset 0; BinghamOffset 0;

2
tutorials/multiphase/driftFluxFoam/ras/tank3D/constant/transportProperties
View File

@ -26,7 +26,7 @@ sludge
coeff 0.00023143; coeff 0.00023143;
exponent 0.17926; exponent 0.17926;
BinghamCoeff 5.5469e-07; BinghamCoeff 7.845e-07;
BinghamExponent 95.25; BinghamExponent 95.25;
BinghamOffset 0; BinghamOffset 0;