|
[Sponsors] |
September 23, 2011, 17:38 |
chtMultiRegionSimpleFoam
|
#1 |
New Member
javad
Join Date: Aug 2010
Posts: 22
Rep Power: 16 |
hello
I'm trying to understand the example OpenFOAM/reza-2.0.0/run/tutorials/heatTransfer/chtMultiReionSimpleFoam/multiRegionHeaterRadiation/ specifically the new Radiation model (view Factor) . i have some questions in this example. what are the parameters G , IDefult ,Qr ? these three parameters are used in some files , below is one of these files . the file name is changeDictionaryDict. /*--------------------------------*- C++ -*----------------------------------*\ | ========= | | | \\ / F ield | OpenFOAM: The Open Source CFD Toolbox | | \\ / O peration | Version: 2.0.0 | | \\ / A nd | Web: www.OpenFOAM.com | | \\/ M anipulation | | \*---------------------------------------------------------------------------*/ FoamFile { version 2.0; format ascii; class dictionary; object changeDictionaryDict; } // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // dictionaryReplacement { U { internalField uniform (0.1 0 0); boundaryField { ".*" { type fixedValue; value uniform (0 0 0); } minX { type fixedValue; value uniform ( 0.1 0 0 ); } maxX { type inletOutlet; inletValue uniform ( 0 0 0 ); value uniform ( 0.1 0 0 ); } } } T { internalField uniform 300; boundaryField { ".*" { type zeroGradient; } minX { type fixedValue; value uniform 300; } maxX { type inletOutlet; inletValue uniform 300; value uniform 300; } "topAir_to_.*" { type compressible::turbulentTemperatureRadCoupledMixed; Tnbr T; K basicThermo; QrNbr none; Qr Qr; KName none; value uniform 300; } } } epsilon { internalField uniform 0.01; boundaryField { ".*" { type compressible::epsilonWallFunction; value uniform 0.01; } minX { type fixedValue; value uniform 0.01; } maxX { type inletOutlet; inletValue uniform 0.01; value uniform 0.01; } } } k { internalField uniform 0.1; boundaryField { ".*" { type compressible::kqRWallFunction; value uniform 0.1; } minX { type fixedValue; value uniform 0.1; } maxX { type inletOutlet; inletValue uniform 0.1; value uniform 0.1; } } } p_rgh { internalField uniform 1e5; boundaryField { ".*" { type buoyantPressure; value uniform 1e5; } maxX { type fixedValue; value uniform 1e5; } } } p { internalField uniform 1e5; boundaryField { ".*" { type calculated; value uniform 1e5; } maxX { type calculated; value uniform 1e5; } } } Qr { internalField uniform 0; boundaryField { ".*" { type greyDiffusiveRadiationViewFactor; emissivityMode lookup; Qro uniform 0; emissivity uniform 1.0; value uniform 0; } "topAir_to_.*" { type greyDiffusiveRadiationViewFactor; emissivityMode solidThermo; Qro uniform 0; value uniform 0; } } } G { internalField uniform 0; boundaryField { ".*" { type MarshakRadiation; T T; emissivityMode lookup; emissivity uniform 1.0; value uniform 0; } "topAir_to_.*" { type MarshakRadiation; T T; emissivityMode solidThermo; value uniform 0; } } } IDefault { internalField uniform 0; boundaryField { ".*" { type greyDiffusiveRadiation; T T; emissivityMode lookup; Qro uniform 0; emissivity uniform 1.0; value uniform 0; } "topAir_to_.*" { type greyDiffusiveRadiation; T T; emissivityMode solidThermo; Qro uniform 0; value uniform 0; } } } } // ************************************************** *********************** // |
|
September 26, 2011, 14:30 |
|
#2 | |
Senior Member
Mirko Vukovic
Join Date: Mar 2009
Posts: 159
Rep Power: 17 |
Quote:
These three variables are in the fvDOM radiation model (Qr is also in the viewFactor among others). See the files fvDOM.H and radiativeIntensityRay.H |
||
|
|