Search found 98 matches

by NJank
26 Jul 2020, 00:33
Forum: ElmerSolver
Topic: phase change references
Replies: 2
Views: 929

Re: phase change references

a few more have come up. the following provides a summary of the three methods with some references others can follow: Pham, Q. T. "Comparison of general-purpose finite-element methods for the Stefan problem." Numerical Heat Transfer 27.4 (1995): 417-435. http://citeseerx.ist.psu.edu/viewdoc/downloa...
by NJank
25 Jul 2020, 23:37
Forum: ElmerSolver
Topic: phase change references
Replies: 2
Views: 929

Re: phase change references

I apparently need to reread some of my old posts: http://www.elmerfem.org/forum/viewtopic.php?p=7624#p7624 "Spatial 2, sqrt((delH.delH)/(delT.delT)), I've seen referred to as the Lemmon scheme [1]... Lemmon, E.C., “Multidimensional integral phase change approximations for finite element conduction c...
by NJank
25 Jul 2020, 23:02
Forum: ElmerSolver
Topic: phase change references
Replies: 2
Views: 929

phase change references

Wondering if anyone with a good archive might have academic references to the models used for the "Spatial 1", "Spatial 2", and "Temporal" forms of effective heat capacity approximation given in the models manual. Or maybe a good memory of which papers might have described the model choices used? I'...
by NJank
25 Feb 2020, 17:43
Forum: General
Topic: Heat solve with phase change - additive enthalpy and capacity?
Replies: 2
Views: 1258

Re: Heat solve with phase change - additive enthalpy and capacity?

OK, thanks for the clarification. At least I know I didn’t screw up all of the other simulations. Just to clarify, if I had some reason to want to separately prescribe heat capacity and enthalpy to capture phase change, enthalpy would just be the excess energy profile In the melting zone above that ...
by NJank
22 Feb 2020, 17:21
Forum: General
Topic: Heat solve with phase change - additive enthalpy and capacity?
Replies: 2
Views: 1258

Heat solve with phase change - additive enthalpy and capacity?

I for the first time took note of a statement in the Heat Equation docs stating: "Note that for the current implementation of the heat equation heat capacity and enthalpy are additive. So if heat capacity is present in the command file it should not be incorporated to enthalpy as an integral." I hav...
by NJank
22 Feb 2020, 17:13
Forum: Contributed Cases
Topic: Solid-liquid phase change
Replies: 6
Views: 5543

Re: Solid-liquid phase change

In previous discussion the transient phase change solver required the inclusion of both Enthalpy and Effective Heat Capacity due to an issue getting transient enthalpy in the first time step. See discussion here: http://www.elmerfem.org/forum/viewtopic.php?f=3&t=2345 I have been doing this exclusive...
by NJank
17 Dec 2019, 19:11
Forum: Bug reports
Topic: Instructions for sending a bug report
Replies: 1
Views: 8519

Re: Instructions for sending a bug report

Is the preferred bug reporting method a post in this forum or an email to elmeradm@csc.fi ?
by NJank
17 Dec 2019, 19:09
Forum: Bug reports
Topic: Windows update is not nightly [FIXED]
Replies: 1
Views: 737

Re: Windows update is not nightly

That came up earlier in the year. It seems the build system is not producing automatic builds anymore.

viewtopic.php?f=16&t=6607&p=20602&hilit ... ild#p20603
by NJank
23 Nov 2019, 05:55
Forum: Bug reports
Topic: SaveLine, first two points are always in reverse order?
Replies: 2
Views: 992

Re: SaveLine, first two points are always in reverse order?

what do you mean by serial cases? do you mean cases where the saveline moves along a continuous set of nodes in index order? the answer is 'sometimes'? i have 'numbering horizontal' on in my grd file. here's a case where I'm grabbing the topmost set of nodes (on boundary 1) from left to right, and i...
by NJank
16 Nov 2019, 20:53
Forum: Bug reports
Topic: SaveLine, first two points are always in reverse order?
Replies: 2
Views: 992

SaveLine, first two points are always in reverse order?

Whenever calling the SaveLine using polyline coordinates, i noticed that the first two points in the output are always in reverse order. example, calling the solver as: Solver 2 Equation = String "SaveLine" Exec Solver = String "After Simulation" Procedure = File "SaveData" "SaveLine" Filename = Fil...