Problem with heat equation tutorial

The graphical user interface of Elmer
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dimension4
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Problem with heat equation tutorial

Post by dimension4 »

I downloaded the VM from http://www.nic.funet.fi/pub/sci/physics ... bin/Vmware
which is supposed to be the latest and greatest. I am running mac osx 10.7.5. I wasn't able to compile the source code on my mac and I found the VM after a long time searching around and trying to compile. I was pleased to find the VM with Elmer compiled. I am running the VM with virtual box.

I ran Elmer from command line using "ElmerGUI"

I am looking through the tutorial
http://www.nic.funet.fi/index/elmer/doc ... orials.pdf
I am starting with tutorial 1, for heat equation.

I have problems with the heat source! I use the tutorial value of 0.01 and I do not get any heating! I played around for a long time and I found the problem is at 1.0. I use a heat source of
0.9999999 - no heating
1.0 - heating! but physically not realistic. Temperatures > 10000K

I cannot get anything in between. Any values less than 1.0 I get no heating. Any values 1.0 or greater and I get physically unrealistic heating. Any help is appreciated.
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