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Search took 0.00 seconds. Search: Posts Made By: immortality
Forum: OpenFOAM Running, Solving & CFD May 29, 2013, 18:19
Replies: 28
Views: 3,418
Posted By immortality
thanks Bruno for your time and effort Did you...

thanks Bruno for your time and effort
Did you do tests on simple case with constant entrance height?
Please have a look into the case with groovyBC to see wich values are appropriate.
Feel free to...
Forum: OpenFOAM Running, Solving & CFD May 29, 2013, 16:41
Replies: 28
Views: 3,418
Posted By immortality
this simple case doesn't crash,although the...

this simple case doesn't crash,although the values of turbulence variales increase constantly.which value is suitable to be used in internal field and enterance?are the current values proper?
And...
Forum: OpenFOAM Running, Solving & CFD May 29, 2013, 16:10
Replies: 28
Views: 3,418
Posted By immortality
yes.it should be for that reason. could you...

yes.it should be for that reason.
could you please have a look into the main case also?
Forum: OpenFOAM Running, Solving & CFD May 29, 2013, 09:39
Replies: 28
Views: 3,418
Posted By immortality
Hi Bruno.I attached a test case. and this error...

Hi Bruno.I attached a test case.
and this error occurs when run yPlus220:
ehsan@Ehsan-com:~/Desktop/shockTube_backwards_Tank/BackwardStep/for_test3$ yPlus220...
Forum: OpenFOAM Running, Solving & CFD May 27, 2013, 17:52
Replies: 28
Views: 3,418
Posted By immortality
Hi Bruno You think its related to initial...

Hi Bruno
You think its related to initial conditions?
I'll test on the backward cases i sent to you before.
Could you please do some tests which of cases you want tomorrow night and let me know...
Forum: OpenFOAM Running, Solving & CFD May 27, 2013, 14:20
Replies: 28
Views: 3,418
Posted By immortality
a divergence occurs during run: Mean and max...

a divergence occurs during run:
Mean and max Courant Numbers = 0.01607557706 0.09894979529
deltaT = 4.166666667e-09
Time = 1.45833e-07

diagonal: Solving for rho, Initial residual = 0, Final...
Forum: OpenFOAM Running, Solving & CFD May 26, 2013, 16:53
Replies: 28
Views: 3,418
Posted By immortality
Hi Bruno I foun a way.I need the cell...

Hi Bruno
I foun a way.I need the cell height.how to obtain a cell height?
maybe:mag(Sf())/.003 (.003 is the width of cell.
is it true?
--------------------------------
Bruno it works...
Forum: OpenFOAM Running, Solving & CFD May 26, 2013, 16:13
Replies: 28
Views: 3,418
Posted By immortality
yes I knew.the patch left has height equal to...

yes I knew.the patch left has height equal to .004m(4mm) and min(pos().y) is equal to 0 and max(pos().y) is equal to .004 then the difference expression becomes .004 that is the height totally....
Forum: OpenFOAM Running, Solving & CFD May 26, 2013, 15:33
Replies: 28
Views: 3,418
Posted By immortality
then it becomes whole the channel height again.I...

then it becomes whole the channel height again.I wonder why pts doesn't work?!
Forum: OpenFOAM Running, Solving & CFD May 26, 2013, 14:56
Replies: 28
Views: 3,418
Posted By immortality
Oh,what an accurate man you are!exactly its for...

Oh,what an accurate man you are!exactly its for that!I 'll test some minutes later.
as you see in my case,the entrance opens to outside gradually(like a wall moves and opens to an environment) so I...
Forum: OpenFOAM Running, Solving & CFD May 26, 2013, 13:56
Replies: 28
Views: 3,418
Posted By immortality
Hi Bruno I found out its because of epsilon(or...

Hi Bruno
I found out its because of epsilon(or omega)expression I have put there.
valueExpression "pow(c_mu,.75)*pow(k,1.5)/l";//pow(c_mu,.75)*pow(k,1.5)/l
value uniform .0000586833;//
...
Forum: OpenFOAM Running, Solving & CFD May 26, 2013, 11:49
Replies: 28
Views: 3,418
Posted By immortality
Hi I did 1 and 2 without success. maybe the...

Hi
I did 1 and 2 without success.
maybe the problem is on mut and alphat:dimensions [1 -1 -1 0 0 0 0];

internalField uniform 0;

boundaryField
{
left
{
Forum: OpenFOAM Running, Solving & CFD May 26, 2013, 08:19
Replies: 28
Views: 3,418
Posted By immortality
Hi dear Bruno you told me about crashing. I...

Hi dear Bruno
you told me about crashing.
I have used different initial values(internalField and on the walls)
I had set k valueExpression "1.5*sqr(l*I*U)"; without mag(U) in below part but it...
Forum: OpenFOAM Running, Solving & CFD May 26, 2013, 06:01
Replies: 28
Views: 3,418
Posted By immortality
Hi the new error is: Reading field gas ...

Hi
the new error is:
Reading field gas

Creating turbulence model

Selecting turbulence model type RASModel
Selecting RAS turbulence model kOmegaSST
kOmegaSSTCoeffs
{
Forum: OpenFOAM Running, Solving & CFD May 25, 2013, 14:43
Replies: 28
Views: 3,418
Posted By immortality
oh,what a careless doing! let me test it.

oh,what a careless doing!
let me test it.
Forum: OpenFOAM Running, Solving & CFD May 25, 2013, 14:02
Replies: 28
Views: 3,418
Posted By immortality
an sigFpe error on Turbulence

Selecting thermodynamics package
{
type hePsiThermo;
mixture pureMixture;
transport sutherland;
thermo janaf;
equationOfState perfectGas;
specie ...
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