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Search took 0.00 seconds. Search: Posts Made By: marcoymarc
Forum: CFX March 13, 2013, 06:39
Replies: 33
Views: 8,982
Posted By marcoymarc
Sorry for this absence. Finally i think i...

Sorry for this absence.
Finally i think i solved my problem. Since i had never used ICEM before, i had to give a look into tutorials et cetera.
When my simulations diverged, i noticed everything...
Forum: CFX March 4, 2013, 19:18
Replies: 33
Views: 8,982
Posted By marcoymarc
Ghorrocks, i'll try to do my best to make you...

Ghorrocks, i'll try to do my best to make you understand the process with my poor English. Please, forget everything about this simulation before starting to read this.

Imagine you have a resin...
Forum: CFX March 4, 2013, 07:34
Replies: 33
Views: 8,982
Posted By marcoymarc
If there is a way to achieve pressure gradient...

If there is a way to achieve pressure gradient using uncompressible flow it would be welcome, as i guess it helps convergence, right?
Forum: CFX March 3, 2013, 18:28
Replies: 33
Views: 8,982
Posted By marcoymarc
http://img833.imageshack.us/img833/2551/fibremesh....

http://img833.imageshack.us/img833/2551/fibremesh.jpg
What i want you to know first, is that where we have air, it should be void instead. (this is why i do want the pressure to stay very low)
And...
Forum: CFX March 3, 2013, 07:29
Replies: 33
Views: 8,982
Posted By marcoymarc
+-------------------------------------------------...

+--------------------------------------------------------------------+
| Mesh Statistics |
...
Forum: CFX March 2, 2013, 06:25
Replies: 33
Views: 8,982
Posted By marcoymarc
Well, using exactly the same setup as for single...

Well, using exactly the same setup as for single phase flow, including expert parameter and vf coupling, while decreasing timestep even at 10^-12 from 10^-6s keeps returning me this error in 1-2...
Forum: CFX March 1, 2013, 04:56
Replies: 33
Views: 8,982
Posted By marcoymarc
There we go!!! The simulation works fine when i...

There we go!!!
The simulation works fine when i use a single phase; and that's the result after 100 timesteps. The best was that i could push up till 10^-5s tstep with no problem at all!
And this...
Forum: CFX February 28, 2013, 07:15
Replies: 33
Views: 8,982
Posted By marcoymarc
this is the way i expect to see pressure in my...

this is the way i expect to see pressure in my simulation:
http://img842.imageshack.us/img842/6577/immagineqix.jpg
With this setup i can only achieve 1 timestep... The steamlines are such strange.
Forum: CFX February 28, 2013, 07:04
Replies: 33
Views: 8,982
Posted By marcoymarc
Chris i tried the expert paramater, again with no...

Chris i tried the expert paramater, again with no result.
Take a look at this:
i used weak boundary conditions (static pressure both at inlet and outletS), but using the same pressure level for...
Forum: CFX February 27, 2013, 08:56
Replies: 33
Views: 8,982
Posted By marcoymarc
Ok. Prolly i found the issue. (Probably) The...

Ok. Prolly i found the issue.
(Probably) The instability is caused by Porous and Fluid Outlets which have such different pressures (O(10^2)Pa and O(1)Pa) lying on the same plane. Porous Outlet is...
Forum: CFX February 27, 2013, 05:10
Replies: 33
Views: 8,982
Posted By marcoymarc
I've just tried both a periodic condition and a...

I've just tried both a periodic condition and a bulk mass flow at inlet (i set it at 9*10^-5 kg/s, value i obtained from a steady state simulation with a solid domain instead of porous domain) with...
Forum: CFX February 26, 2013, 13:22
Replies: 33
Views: 8,982
Posted By marcoymarc
http://img812.imageshack.us/img812/6124/immagine3o...

http://img812.imageshack.us/img812/6124/immagine3ow.jpg
Ghor, as you said, i made fibers overlap to help CFX converging.

FLUID DOMAIN
Inlet 1000 Pa, static pressure, Resin VF = 1 air VF = 0...
Forum: CFX February 25, 2013, 08:09
Replies: 33
Views: 8,982
Posted By marcoymarc
Ghorrocks i've refined my model eliminating those...

Ghorrocks i've refined my model eliminating those orrible bits. But i can't get it converging even on the simpler model. Can you help me please? According to your experience is this physic setup...
Forum: CFX February 11, 2013, 19:51
Replies: 33
Views: 8,982
Posted By marcoymarc
What happens if i solve my steady state with a...

What happens if i solve my steady state with a SOLID domain instead of a porous domain and then try to use that for my transient POROUS sim? I mean What happens to initial conditions? My guess is...
Forum: CFX February 11, 2013, 09:11
Replies: 33
Views: 8,982
Posted By marcoymarc
http://img252.imageshack.us/img252/3471/immagine3s...

http://img252.imageshack.us/img252/3471/immagine3sx.jpg

Ghorrocks, hi again.
I followed your guidelines, and this is the simplest geometry i could think of.
I have some questions for you, and...
Forum: CFX February 10, 2013, 07:01
Replies: 33
Views: 8,982
Posted By marcoymarc
Ghorrocks, i would be lost without you :D I'm...

Ghorrocks,
i would be lost without you :D
I'm working on the simpler model right now. I'll keep the thread updated.
Thank you.
Forum: CFX February 9, 2013, 12:01
Replies: 33
Views: 8,982
Posted By marcoymarc
Stable boundaries

http://img805.imageshack.us/img805/1117/immagine2cm.jpg


There we go. I am struggling very hard to make my simulation converge.
Trying everything. But let me tell you the setup.

This model...
Showing results 1 to 17 of 17

 
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