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Search took 0.00 seconds. Search: Posts Made By: ali jafari
Forum: OpenFOAM Running, Solving & CFD December 17, 2014, 17:05
Replies: 475
Views: 94,928
Posted By ali jafari
zero or small solvent viscosity

hi

I try to solve some problems by gisekus and oldroyd-b with negligible and zero solvent viscosity. viscoelasticfluidfoam can not do it. when I increase solvent viscosity it converges.
do I...
Forum: OpenFOAM Running, Solving & CFD February 9, 2014, 13:02
Replies: 475
Views: 94,928
Posted By ali jafari
Unhappy Strain tensor , shear rate ?!

hi every body

is there any utility that it can calculate strain tensor or velocity gradient for viscoelasticFluidFoam solver?
Forum: OpenFOAM Running, Solving & CFD September 14, 2013, 14:24
Replies: 475
Views: 94,928
Posted By ali jafari
any one can not help me ?:confused:

any one can not help me ?:confused:
Forum: OpenFOAM Running, Solving & CFD September 14, 2013, 01:28
Replies: 475
Views: 94,928
Posted By ali jafari
Post hi dear EricKl after blockMesh please use...

hi dear EricKl

after blockMesh please use checkMesh and check any warning and error. I think your problem refer to pre-processing.
Forum: OpenFOAM Running, Solving & CFD September 11, 2013, 05:12
Replies: 475
Views: 94,928
Posted By ali jafari
Lightbulb tauxx , tau_XX !!

hi

I used viscoelastic utility (stressSymmComponents). but when I created a calculator filter , two scaler were appeared , tauxx and tau_XX . what's different between two scaler ? :confused:
Forum: OpenFOAM Running, Solving & CFD September 10, 2013, 09:52
Replies: 475
Views: 94,928
Posted By ali jafari
Lightbulb hi This can refer to the ratio of viscosity...

hi
This can refer to the ratio of viscosity (ethaS/ethaP) .How do you define Wi number ?
Forum: OpenFOAM Running, Solving & CFD September 10, 2013, 01:57
Replies: 475
Views: 94,928
Posted By ali jafari
Thumbs up viscoelastic utility

I found it , it work on OF 2.2.0
Forum: OpenFOAM Running, Solving & CFD September 9, 2013, 16:36
Replies: 475
Views: 94,928
Posted By ali jafari
I find it !!!!

I find it !!!!
Forum: OpenFOAM Running, Solving & CFD September 9, 2013, 12:28
Replies: 475
Views: 94,928
Posted By ali jafari
Cool stressDifferences utility

hi

I want to calculate first and second normal stress differences in newer OpenFoam version (2.2.0) but in this version there is not the "stressDifferences" utility and I cant find it for...
Forum: OpenFOAM Running, Solving & CFD August 14, 2013, 08:32
Replies: 475
Views: 94,928
Posted By ali jafari
Red face questions

your explain come back to viscoelastic solver I understood it. my problem is about icoFoam. please help me , I have 4 questions :
1) icoFoam results and viscoelasticfluidfoam are different at a...
Forum: OpenFOAM Running, Solving & CFD August 14, 2013, 06:20
Replies: 475
Views: 94,928
Posted By ali jafari
Exclamation thanks for useful and quick reply. I want to...

thanks for useful and quick reply.
I want to know too , what should be I do for modeling a fluid properties that applied in icoFoam by viscoelasticfluidfoam .(specially about density...
Forum: OpenFOAM Running, Solving & CFD August 13, 2013, 14:46
Replies: 475
Views: 94,928
Posted By ali jafari
Exclamation icofoam nu , viscoelasticfluidfoam rho

hi
I solved a problem for Newtonian and decided to compared it with viscoelastic
so I need similar properties such as viscosity and density. in other hand B.Cs for P are cyclic.

is...
Forum: OpenFOAM Running, Solving & CFD November 9, 2012, 06:48
Replies: 475
Views: 94,928
Posted By ali jafari
Hi I have two problem in viscoelastic: 1)I...

Hi
I have two problem in viscoelastic:

1)I confused about stress boundary conditions in 3D models (walls) , zerogradient or fixedvalue ?

2)I want to solve taylor problem ( rotational...
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