|
[Sponsors] |
July 13, 2009, 12:38 |
Moving mesh
|
#1 |
New Member
thomas
Join Date: Jun 2009
Location: Edinburgh
Posts: 12
Rep Power: 16 |
Hello,
I would like to simulate a flow crossing an orifice and to take into account the deformation of the wall. I think that I should use a moving mesh. Could be possible to do it with StarCCM+? How I have to define my mesh? Thanks in advance. Thomas. |
|
July 14, 2009, 23:52 |
|
#2 |
New Member
Jiashing Liu
Join Date: Mar 2009
Posts: 11
Rep Power: 17 |
Hi,
You can use motion modelling function, ie. mesh morpher or 6DOF. There are tutorials in the user guild (CCM+ 4.04). |
|
July 15, 2009, 04:25 |
|
#3 |
New Member
thomas
Join Date: Jun 2009
Location: Edinburgh
Posts: 12
Rep Power: 16 |
Hi,
Many thanks for your reply. Unfortunately I don't have the user guide 4.04. I have just the user guide 3.06. Do you know where I can find it. Thanks. Thomas. |
|
July 15, 2009, 05:23 |
|
#4 |
New Member
Nicholas
Join Date: Jul 2009
Posts: 13
Rep Power: 16 |
I have a copy, it is a 157MB file however, do you have a drop-box account?
|
|
July 15, 2009, 05:37 |
|
#5 |
New Member
thomas
Join Date: Jun 2009
Location: Edinburgh
Posts: 12
Rep Power: 16 |
That's great if you can send me a copy.
I don't have a drop-box account. It is easy to create an account? Thanks. Thomas |
|
July 15, 2009, 10:23 |
|
#6 |
Senior Member
Join Date: Mar 2009
Posts: 260
Rep Power: 18 |
4.04 is already avaible? Last version is 4.02.11?!
|
|
July 16, 2009, 05:11 |
|
#7 |
Member
Oliver Lauer
Join Date: Mar 2009
Location: Coburg
Posts: 57
Rep Power: 17 |
4.04 was announced and is available via cd-adapco user services. Latest version is 4.04.011
|
|
July 16, 2009, 05:15 |
|
#8 |
Senior Member
Join Date: Mar 2009
Posts: 260
Rep Power: 18 |
Sure? I talked with the support and they told me 4.04 isn't avaible yet.
|
|
July 16, 2009, 11:32 |
|
#9 |
Member
Oliver Lauer
Join Date: Mar 2009
Location: Coburg
Posts: 57
Rep Power: 17 |
Yes sure. It is still available on User Services FTP area. Announcement email was from July 13th
|
|
July 16, 2009, 12:21 |
|
#10 |
New Member
thomas
Join Date: Jun 2009
Location: Edinburgh
Posts: 12
Rep Power: 16 |
Hi all,
I don't manage to generate my moving mesh. I would like to take into account the deformation of the wall (of the orifice). I would like to move my mesh according the pressure on the wall. If somebody have an advice. Thanks. Thomas. |
|
July 20, 2009, 17:46 |
|
#11 |
New Member
Diego Simón Davila
Join Date: May 2009
Posts: 4
Rep Power: 16 |
Hi, CCM+ can calculate the stress in the wall material due to the fluid pressure, but I am almost sure that it can not solve the deformation of the wall caused by it.
King regards, Diego. |
|
July 20, 2009, 17:54 |
|
#12 |
Senior Member
Join Date: Mar 2009
Posts: 260
Rep Power: 18 |
Hmm with the wand stress you could be able to run a FEM to get the deformation?!
|
|
July 20, 2009, 18:05 |
|
#13 |
New Member
Diego Simón Davila
Join Date: May 2009
Posts: 4
Rep Power: 16 |
I have never did it, but I think it is possible. In the morpher model you can specify LinearDisplacement for a boundary, and give it a constant value, a field function, values from tables... So with a FEM solver and generating a table probably you could do it. Maybe not in a full coupled way ( fluid -> structure -> fluid...) automatically, but you could give it at least an iteration (assuming the pressure distribution in the deformed mesh is the same as in the undeformed) by hand.
|
|
July 21, 2009, 06:25 |
|
#14 |
New Member
thomas
Join Date: Jun 2009
Location: Edinburgh
Posts: 12
Rep Power: 16 |
Thanks for your reply.
Yes I can with the morpher model specify LinearDisplacement for a boundary. I can generate a table with a FEM solver but in order to have accurate results I need to update my table according the variation of pressure on the wall due to its deformation ( fluid -> structure -> fluid -> structure -> fluid...) So It is not useful. Maybe I can create a macro... |
|
July 21, 2009, 06:39 |
|
#15 |
Senior Member
Join Date: Mar 2009
Posts: 260
Rep Power: 18 |
I think you can use the "export" function to export for every step your results. That should work good.
|
|
July 21, 2009, 07:02 |
|
#16 |
New Member
thomas
Join Date: Jun 2009
Location: Edinburgh
Posts: 12
Rep Power: 16 |
Yes could be a good idea.
I will try. Thomas. |
|
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Moving mesh part 2 | lr103476 | OpenFOAM Running, Solving & CFD | 49 | December 14, 2010 06:20 |
fluent add additional zones for the mesh file | SSL | FLUENT | 2 | January 26, 2008 11:55 |
CavitatingFoam with a moving mesh mass conservation error | idosil | OpenFOAM Running, Solving & CFD | 3 | November 27, 2007 17:27 |
Waves halted by moving mesh | Piotr Czajko | COMSOL | 1 | November 24, 2007 02:00 |
Moving Mesh and MRF | Romain | FLUENT | 1 | May 16, 2002 03:45 |