Search found 3541 matches

by raback
17 Feb 2020, 21:55
Forum: Installation & compilation
Topic: New Windows installers
Replies: 3
Views: 28

Re: New Windows installers

Hi ElmerGUI seems to work now as well. Unfortunately without OCC and QWT. If you install manully then add these (here I've assumed installation path c:\Elmer8.4) set ELMER_HOME=c:\Elmer8.4 set ELMERGUI_HOME=%ELMER_HOME%\share\ElmerGUI set ELMER_LIB=%ELMER_HOME%\share\elmersolver\lib set PATH=%PATH%;...
by raback
17 Feb 2020, 21:51
Forum: Installation & compilation
Topic: ctest failed
Replies: 1
Views: 16

Re: ctest failed

Hi Tan If just two of the hundreds tests failed that's pretty good. Of course it would be preferable that none of the tests would fail. Some tests might not be that robust. If you have just slight difference in norm that's often ok. The default accuracy by which the norms are tested is 1.0e-6. Your ...
by raback
17 Feb 2020, 13:49
Forum: ElmerGUI
Topic: Temperature Expansion Problem
Replies: 4
Views: 44

Re: Temperature Expansion Problem

Hi

Dirichlet conditions may also be defined unintuitively in "Body Force" section. And if you're not really solving for temperature there are ways to circumwent that too bu just defining the temperature field with epressions.

-Peter
by raback
15 Feb 2020, 01:27
Forum: Installation & compilation
Topic: New Windows installers
Replies: 3
Views: 28

New Windows installers

Hi There has been some new Windows installers available for testing: https://www.nic.funet.fi/index/elmer/bin/windows-test/ The installer has still problem with Qt5 bundled files. So the "gui" version is yet not operational. However, the MS MPI and gfortran seem to be working ok. So if these are suf...
by raback
13 Feb 2020, 23:56
Forum: ElmerSolver
Topic: I can't solve 3D steady state turbulent Model (N.S & K-e)
Replies: 4
Views: 35

Re: I can't solve 3D steady state turbulent Model (N.S & K-e)

Hi Elmer development follows the projects related to it to rather large extent. Over the years there has been a plethora of projects with almost complete exception of turbulence. It is the real-world cases that are needed to trim the code. I would think one reason is that OpenFOAM sucks those applic...
by raback
08 Feb 2020, 19:23
Forum: ElmerSolver
Topic: Creating Custom Volume/Phase Content Parameters
Replies: 4
Views: 98

Re: Creating Custom Volume/Phase Content Parameters

Hi Generally any material parameter can be a function of any field variable, e.g. MyParam = Variable Temperature, Saturation, Whatever Real MATC "f(tx(0),tx(1),tx(2))" or MyParam = Variable Temperature, Saturation, Whatever Real Procedure "MyModule" "MyMaterial" MATC is good mainly for quick testing...
by raback
07 Feb 2020, 14:30
Forum: Installation & compilation
Topic: Implementing updates/fixes without complete compiling
Replies: 6
Views: 146

Re: Implementing updates/fixes without complete compiling

Hi There are some tentative builds on: http://www.nic.funet.fi/pub/sci/physics/elmer/bin/windows-test/ Note that these are completely untested. Any part or the whole installation could be broken. All I know is the compilation goes through.For the ElmerGUI the Qwt (convergence plotter) is still missi...
by raback
06 Feb 2020, 17:44
Forum: ElmerSolver
Topic: Heat Radiation
Replies: 10
Views: 121

Re: Heat Radiation

Hi Note that you need a dense matrix for the view factors with size 83264 x 83264 i.e. about 6.93e9 entries. Even if you had this much memory in your system the code will fail because max value of 32 bit integer is 2.14e9. Hence the quadratic scaling makes the radiation model of Elmer poorly scalabl...
by raback
06 Feb 2020, 12:57
Forum: ElmerSolver
Topic: Using Elmer to describe Tokamak plasma
Replies: 1
Views: 45

Re: Using Elmer to describe Tokamak plasma

Hi Elmer has been used in some trials to compute mainly magnetic fields of Tokamak reactors. The challenge with the plasma is that the Reynolds number is so large that standard methods used for Navier-Stokes equations are not feasible. Turbulence models make assumptions that are not valid so you nee...
by raback
05 Feb 2020, 01:29
Forum: ElmerSolver
Topic: Reynolds Module: Iterating Elmer solvers and integral calculation
Replies: 3
Views: 64

Re: Reynolds Module: Iterating Elmer solvers and integral calculation

Hi Josie, I have some concerns for the approach due to the huge effort needed for the integration: if I understood correctly the expression for the gap height including integral over the whole domain, needed to computed in every Gaussian quadrature where the height is needed. Let's take bilinear qua...