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by Bernd
Sun Aug 02, 2009 5:54 pm
Forum: phase-field model
Topic: New publication on MICRESS phase-field model
Replies: 11
Views: 16744

New publication on MICRESS phase-field model

Hi all, The "homoenthalpic" paper is now ready: B. Böttger, J. Eiken, M.Apel, Phase-field simulation of microstructure formation in technical castings – A self-consistent homoenthalpic approach to the micro–macro problem, J. Comput. Phys. 228 (2009), 6784-6795. I can send you a personal copy on requ...
by Bernd
Sun Aug 02, 2009 5:09 pm
Forum: phase-field model
Topic: stabilization
Replies: 1
Views: 2180

Re: stabilization

Dear mtoloui, did you already have a look on these threads: Reference1 Reference2 Actually, this option is referring in first place to small grains, which still do not have a cell with full fraction. "Stabilisation" means to assume a reduced curvature in this stage instead of the phase-field curvatu...
by Bernd
Thu Jul 30, 2009 5:10 pm
Forum: phase-field model
Topic: Categorization
Replies: 5
Views: 6070

Re: Categorization

Dear Sunny, In order to throw several grain to the same grain number, they have to have identical properties. If the phase in question is anisotropic, you could nucleate them with a random orientation distribution, and categorisation would be practically impossible because they have all different or...
by Bernd
Thu Jul 30, 2009 3:33 pm
Forum: phase-field model
Topic: 1d_temp
Replies: 11
Views: 14320

Re: 1d_temp

Dear sunny,

I have sent you the files by email and I have also put them to the temporary download area in the MICRESS homepage so that everybody can access them:

http://web.access.rwth-aachen.de/MICRES ... loads.html

Bernd
by Bernd
Thu Jul 30, 2009 2:56 pm
Forum: solid-solid phase transformations
Topic: Phase 0 in solid state transformations
Replies: 0
Views: 11356

Phase 0 in solid state transformations

Dear all, I got several times the question why in simulations of the gamma-alpha transformation the phase 0 has to be included even if it is not needed, and sometimes even physical paramters have to be given for this phase. The reason has to do with the past of MICRESS as a solidification tool. At t...
by Bernd
Tue Jul 28, 2009 7:33 pm
Forum: phase-field model
Topic: 1d_temp
Replies: 11
Views: 14320

Re: 1d_temp

Dear sunny,

I cannot send you the files via PM because attachments of this type are not allowed! Please give me your email adress via PM, then I will send you the files!

Bernd
by Bernd
Tue Jul 28, 2009 7:23 pm
Forum: phase-field model
Topic: 1d_temp
Replies: 11
Views: 14320

Re: 1d_temp

Dear sunny, the mentioned example is on the redistribution CD for versions 5.404 and newer. Unfortunately, it is still not on the list of examples in the downloads area of the MICRESS homepage. but here is it! I'll send you a PM with the file and the additional input files you need to run the exampl...
by Bernd
Thu Jul 23, 2009 8:27 pm
Forum: pre-processing
Topic: failure?
Replies: 6
Views: 5620

Re: failure?

Dear zhubq,

Nevertheless, MICRESS should not behave like that! I am still interested in seeing the driving file in order to know exactly how it fails!

Thanks!
Bernd
by Bernd
Thu Jul 23, 2009 12:49 pm
Forum: pre-processing
Topic: failure?
Replies: 6
Views: 5620

Re: failure?

Dear zhubq, This error definitively should not occur! I have never seen itbefore, but, if it is reproducable, it seems to be connected to the initialisation of the boundary conditions in the subroutine initRand. Do you use strange boundary conditions or do something wrong in the input which is not p...
by Bernd
Wed Jul 22, 2009 1:05 am
Forum: pre-processing
Topic: nucleation issues
Replies: 16
Views: 15240

Re: nucleation issues

Dear Raghav, what I do not understand is how you can perform a solidification experiment at 973K if the liquidus temperature is 1227K! Even if you would pour the melt (which initially has to be above 1227K to be completely liquid) into a mold of 973K, you would get nucleation at a higher temperature...