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Viscoelastic Fluid Flows using OpenFOAM The solver viscoelasticFluidFoam

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Old   May 1, 2011, 02:52
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  #141
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ata kamyabi
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It seems that the problem of the code has been solved.
Enjoy
Attached Files
File Type: h createFields.H (2.9 KB, 56 views)
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Old   May 2, 2011, 02:15
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hello;
yes, it does well; I extremely thankful for your kindness;
kind regards
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Old   May 2, 2011, 10:04
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hello M.r kamyabi;
excuse me; I did some change in the solver's code and compiled it eventually, but it seems has main problem when running a case; It doesn't do well and gives this error:

nano.zip
I don't know what to do ; would you guide me?
thanks;
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Old   May 3, 2011, 03:14
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It seems that the problem of the transportProperties file has been solved.
Enjoy


/*--------------------------------*- C++ -*----------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: 1.7.0 |
| \\ / A nd | Web: www.OpenFOAM.com |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
class dictionary;
location "constant";
object transportProperties;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

transportModel Newtonian;

nuF nuF [0 2 -1 0 0 0 0] 9.772e-4;
kF kF [1 1 -3 -1 0 0 0] 0.6047;
rhoF rhoF [1 -3 0 0 0 0 0] 9.9778e2;
muF muF [1 -1 -1 0 0 0 0] 9.7937e-7;
CpF CpF [0 2 -2 -1 0 0 0] 4076;
DTF DT [0 2 -1 0 0 0 0] 1.4868e-7;
Kb Kb [1 2 -2 -1 0 0 0] 1.4868e-7;

kP kP [1 1 -3 -1 0 0 0] 401;
rhoP rhoP [1 -3 0 0 0 0 0] 8933;
dP dP [0 1 0 0 0 0 0] 0.00002;
CpP CpP [0 2 -2 -1 0 0 0] 385;

//*************************************
nu nu [0 2 -1 0 0 0 0] 9.772e-4;
//*************************************

// ************************************************** *********************** //
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Old   May 3, 2011, 12:17
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hello;
thank you for reply;I want it read the nu from that formula which determined in the createFields not from transportProperties; If I change it's name there would be no problem?
thanks
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Old   May 4, 2011, 03:50
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Hi
I think you should use "IOobject::NO_READ" for it.
Good luck
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Old   May 9, 2011, 06:44
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Hi dear FOAMers
I have two questions about viscoelasticFluidFoam solver.
1. What does "p.boundaryField().updateCoeffs();" do?
2. I think after the line "p.relax();" the line "p.correctBoundaryConditions();" must be added. Am I true?
Best regards

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Old   May 9, 2011, 07:30
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How far is the developmentof the multiphase viscoelastic solver? Would you be releasing is sometime?

Quote:
Originally Posted by jovani View Post
Hello,

What you need is a multiphase solver with viscoelastic treatment. The viscoelasticFluidFoam solver doesn't do this, because your formulation is to closed flow of 1 only fluid. You cannot use interFoam too, because it doesn't support viscoelastic flow, only multiphase newtonian or GNF fluid.

I have a solver to treat multiphase viscoelastic flow, but a can't release it now.

Jovani
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Old   May 10, 2011, 02:19
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Hi
I have a two phase viscoelastic solver too. I will release it after the end of my Ph.D.
Any response to my question?
Good luck
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Old   May 10, 2011, 03:21
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Ata,
What methodology are you using for your solver? When will you finish your Ph.D.? We tried some development here but it didn't work at least for high Weissenberg numbers. How does your solver perform?
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Old   May 13, 2011, 03:14
Default Two phase viscoelastic fluid flow
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Hi
I used VOF method. I used two solvers interFoam and viscoelasticFluidFoam for creating my new solver. I will finish my Ph.D. about 2012. Use low tolerance for tau equation (e.g. 1e-15). May be this solve your problem.
Good luck

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Old   August 1, 2011, 16:33
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hi
any body have the PTT-Linear Model of viscoelasticfluidFoam paper?
PTT-Linear used in above solver is many different to another same of this model
i cant understand " taufirst"
please help me.
thank you
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Old   August 2, 2011, 00:27
Default Viscoelastic Fluid Flows using OpenFOAM The solver viscoelasticFluidFoam
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Hi
taufirst and tausecond and ... are used for multy mode constitutive equations.
Good luck

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Old   August 2, 2011, 06:04
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Hi
Dear Ata
in Constitutive Equation used just tau
foe example LPTT model
(1+(ε_k λ_k)/(ηp_k ) tr(τp_κ ) )τp_κ+λ_k τp_k=2ηp_k D
tau first?
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Old   August 2, 2011, 06:06
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Hi
Dear Ata
in Constitutive Equation used just tau
foe example LPTT model
(1+(ε_k λ_k)/(ηp_k ) tr(τp_κ ) )τp_κ+λ_k τp_k=2ηp_k D
tau first?
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Old   August 2, 2011, 06:47
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desert_1250 is an unknown quantity at this point
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Dear yosof,
tua is the summation of tau at each mode of viscoelastic fluid because of its relaxation spectra

best regard
___________
Rasoul

Last edited by desert_1250; August 3, 2011 at 00:56.
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Old   August 2, 2011, 14:49
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Quote:
Originally Posted by desert_1250 View Post
Dear yosof,
tua is the summation of tau at each mode of viscoelastic fluid becouse of its relaxation spectra

best regard
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Rasoul
Vielen Dank Herr Varedi!
bitte antwortest nschrischten(SMS!)
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Old   August 3, 2011, 00:56
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Quote:
Originally Posted by usefkeyghobadi View Post
Vielen Dank Herr Varedi!
bitte antwortest nschrischten(SMS!)


Will fragen.
Viel Glück
Das Recht auf Asyl

___________
Rasoul
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Old   August 21, 2011, 19:12
Default VicoelasticFluidFoam and OF2.0.0
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Dear Fomers
I am trying to compile VicoelasticFluidFoam in OpenFoam2.0.0 I read the instruction which proposed in forum but It was not compiled.
could you please let me know is this solver work with this version of Openfoam (2.0.0) or i have to downgrate it to OF1.5.
If your answer is yes could you tell me how I can compile it.
Regards
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Old   August 22, 2011, 04:46
Default VicoelasticFluidFoam in OpenFoam2.0.0
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Hi
It is possible. Tell me what is your problem in detaile?
Good luck

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