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Search: Posts Made By: sharonyue
Forum: OpenFOAM Running, Solving & CFD October 30, 2013, 21:58
Replies: 14
Views: 3,801
Posted By sharonyue
Sorry, very late. In leisure time, I check...

Sorry, very late.

In leisure time, I check this out again, and find this "velocity getting slow" thing is not incurred by the nu. I attached an image using the new nu field. In this solver I make...
Forum: OpenFOAM Running, Solving & CFD June 26, 2013, 20:17
Replies: 14
Views: 3,801
Posted By sharonyue
hi olivier, There are four functions about...

hi olivier,

There are four functions about nu, nuf, mu, muf in the code of twoPhaseMixture.C, I change the function regarding "nuf" and "muf", I think its the viscosity in the face which make the...
Forum: OpenFOAM Running, Solving & CFD June 18, 2013, 05:22
Replies: 14
Views: 3,801
Posted By sharonyue
If the liquid's density is 1000, nu is 1000, ...

If the liquid's density is 1000, nu is 1000,
gas's density is 1 , nu is 1 ,
By this code, if alpha=0.5, we have nuf=\frac{0.5*1000*1000+0.5*1*1}{0.5*1000+0.5*1}=999
Its almost...
Forum: OpenFOAM Running, Solving & CFD June 18, 2013, 03:29
Replies: 14
Views: 3,801
Posted By sharonyue
Hi, About this, my opinion is this: look at...

Hi,

About this, my opinion is this: look at this image. the four cells in the middle is some kind viscious liquid which viscosity is 1000, the other cells' viscosity is 1, By openfoam's code:
...
Forum: OpenFOAM Running, Solving & CFD June 13, 2013, 09:23
Replies: 14
Views: 3,801
Posted By sharonyue
Hi olivier, Thats a light from the dark,...

Hi olivier,

Thats a light from the dark, Thanks. But what is Cie?



Looks like this could explain the high viscosity liquid is droping more slowly, for example: if the nu1 is 500, nu2 is 1,...
Forum: OpenFOAM Running, Solving & CFD June 12, 2013, 19:42
Replies: 14
Views: 3,801
Posted By sharonyue
I check the voscosity model in OpenFOAM, for...

I check the voscosity model in OpenFOAM, for example CrossPowerLaw code:

return (nu0_ - nuInf_)/(scalar(1) + pow(m_*strainRate(), n_)) + nuInf_;

Does it mean it do not consider the two phase...
Forum: OpenFOAM Running, Solving & CFD June 6, 2013, 23:58
Replies: 14
Views: 3,801
Posted By sharonyue
I dont know why there is no one concerning about...

I dont know why there is no one concerning about this, no one is doing non-newtonian simulation? I made another test, copy the dambreak tutorial and make only one correction in nu:


phase1
{
...
Forum: OpenFOAM Running, Solving & CFD April 9, 2013, 00:04
Replies: 14
Views: 3,801
Posted By sharonyue
Hi Chris, Thanks for your reply With...

Hi Chris,

Thanks for your reply

With respect to dambreakstill case.I check the nu1.in time 0.45.nu1 is equivalent over the field.this is the result:

dimensions [0 2 -1 0 0 0 0];
...
Forum: OpenFOAM Running, Solving & CFD April 8, 2013, 21:52
Replies: 14
Views: 3,801
Posted By sharonyue
This is my case.just run blockMesh setFields ...

This is my case.just run
blockMesh
setFields
twoPhaseeulerfoam

See the result and change the nu make a comparison.
Forum: OpenFOAM Running, Solving & CFD April 8, 2013, 21:50
Replies: 14
Views: 3,801
Posted By sharonyue
Recently I have tried twophaseeulerfoam,the mesh...

Recently I have tried twophaseeulerfoam,the mesh is totally the same with damBreak.

First I set the liquid is water, the transportDict is:
phase1
{
nu 1.6e-05;
rho ...
Forum: OpenFOAM Running, Solving & CFD April 2, 2013, 19:41
Replies: 14
Views: 3,801
Posted By sharonyue
interFoam, wierd nu.

Hi,

In interFoam,I usually simulate a system of non-newtonian fluid. So I just make a test,in tutorial dambreak, I set the lower part of the mesh is all of fluid, and the higher part is air....
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