Search found 53 matches
- 04 Mar 2020, 11:44
- Forum: ElmerSolver
- Topic: Turbulent Flow Simulations with Elmer - A Request
- Replies: 33
- Views: 22354
Re: Turbulent Flow Simulations with Elmer - A Request
Hi! Kumar, thanks for invitation. As programmer I have some basic skills but not enough to dive into Elmer FRORTRAN code. As engineer, I think, I am able to do something. I think, first of all, we should prepare and supply solution algorithm, based on some resent works, preferably in pseudo code. It...
- 04 Apr 2019, 10:27
- Forum: ElmerSolver
- Topic: Cold flow across a hot solid
- Replies: 6
- Views: 3753
Re: Cold flow across a hot solid
PS: I do not tried to play with Initial guess.
- 04 Apr 2019, 10:21
- Forum: ElmerSolver
- Topic: Cold flow across a hot solid
- Replies: 6
- Views: 3753
Re: Cold flow across a hot solid
I have met the same troubles. It is numerical instabilities near high temperature gradient.
You can look here:
viewtopic.php?f=3&t=4164&p=14705#p14705
Peter gave me some tips. In fact, only mesh refining near the walls was resultative.
You can look here:
viewtopic.php?f=3&t=4164&p=14705#p14705
Peter gave me some tips. In fact, only mesh refining near the walls was resultative.
- 25 Jul 2018, 14:36
- Forum: ElmerSolver
- Topic: Turbulent flow at high Reynolds number - Convergence problem
- Replies: 19
- Views: 13554
Re: Turbulent flow at high Reynolds number - Convergence problem
Hi guys! Here is my experiments on Kumar's case with triangular 2D mesh and 3D tetrahedral mesh. 2D mesh: https://drive.google.com/open?id=1t1cWZBrS4_wXeEv7P6h_AQwyYMrz7wG9 All is OK. 3D mesh: https://drive.google.com/open?id=1bm07ZWHiWeEDVx6cbngfW7J0rQlEZKmO God damn hard... One have to decrease Re...
- 20 Jul 2018, 13:58
- Forum: ElmerSolver
- Topic: Elmersolver crashes when Porous Media is activated
- Replies: 11
- Views: 8318
Re: Elmersolver crashes when Porous Media is activated
Hi! I remember, there was nice conversation with you a year ago :D May be now I also can help you. I made a simple 2D GUI case for you (see in Mesh_1 folder), where massive composite casing of A356 alloy is crystallizing. Elmer model manual says that for porous medium flow resistivity is to be speci...
- 10 Nov 2017, 16:59
- Forum: Software development
- Topic: Save materials - GUI definition
- Replies: 0
- Views: 5874
Save materials - GUI definition
Hi Elmer team!
I have made savematerials.xml.
Please check it and if it's OK, I'll be happy to see it in new Elmer release.
I have made savematerials.xml.
Please check it and if it's OK, I'll be happy to see it in new Elmer release.
- 15 Mar 2017, 16:47
- Forum: General
- Topic: Beginner's troubles
- Replies: 3
- Views: 4118
Re: Beginner's troubles
You're welcome!
- 14 Mar 2017, 09:33
- Forum: General
- Topic: Beginner's troubles
- Replies: 3
- Views: 4118
Re: Beginner's troubles
Hi! First issue: You can scale the mesh in ElmerGUI, just paste in Model-->Setup-->Simulation-->Free Text following instruction Coordinate Scaling = 0.001 Second issue: Heat flux q=k*dT/dn is in W/m² (Eqn. 1.18 in Models Manual). Anyway, you can use any unit system. But you have to rescale all the m...
- 14 Mar 2017, 08:52
- Forum: ElmerSolver
- Topic: Heat simulation mesh lvl3 cylinder shape issue
- Replies: 7
- Views: 5902
Re: Heat simulation mesh lvl3 cylinder shape issue
Hi! Unfortunately I was not able to solve with Mesh Levels = 3 on my computer due to lack of memory (as Peter said). But I suppose,it's the mesh issue. IMHO: In the thin layers of 0.04 and 0.07 mm thickness the elements has wary sharp angles in Temp. gradient direction. After 3 splitting operations ...
- 10 Mar 2017, 11:17
- Forum: ElmerSolver
- Topic: Heat simulation mesh lvl3 cylinder shape issue
- Replies: 7
- Views: 5902
Re: Heat simulation mesh lvl3 cylinder shape issue
You can simply apload your case to some cloud like Dropbox or something else and share the URL/laileng wrote:Hi dmitry,
I wish to upload the attachment here, but the mesh file size has exceeds the maximum allowed upload size.
Is there any ways for me to send you the file?
Thank you.
Regards,
laileng