Get steady state heat flux out of a thermal model

Numerical methods and mathematical models of Elmer
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ChrisH
Posts: 2
Joined: 17 Oct 2017, 11:14
Antispam: Yes

Get steady state heat flux out of a thermal model

Post by ChrisH »

I'm trying to get the steady-state heat flux out of a simple thermal model: a cylindrical wire with one end at 4K and the other at 300K (in vacuum and ignoring radiation so the sides can be treated as isolated). Eventually I'll want to put in the temperature-dependent thermal conductivity but for now I want to model something I can also solve analytically before adding the real complexity.



Things I've looked at so far, without finding the right combination of parameters/commands:

Tutorial 1. Heat equation – Temperature field of a solid object

FluxSolver results -- viewtopic.php?f=3&t=2135&p=6318&hilit=f ... 0025#p6318

beginners questions: black screen, flux values -- viewtopic.php?f=8&t=3643&start=0&hilit= ... te+thermal

Mean Flux angle -- viewtopic.php?f=3&t=4151&p=14636&hilit= ... 025#p14636

Heat Equation, obtaining heatflux and heatconductivity -- viewtopic.php?f=3&t=3068
mzenker
Posts: 1999
Joined: 07 Dec 2009, 11:49
Location: Germany

Re: Get steady state heat flux out of a thermal model

Post by mzenker »

Hi,

in a nutshell:
* make geometry
* mesh
* import mesh in ElmerGUI
* steady state simulation
* output file with extension .vtu
* Heat equation
* Boundary conditions: one end at 300 K, one at 4 K
* Initial condition: choose a start temperature
* post-processing with ParaView

HTH,
Matthias
ChrisH
Posts: 2
Joined: 17 Oct 2017, 11:14
Antispam: Yes

Re: Get steady state heat flux out of a thermal model

Post by ChrisH »

mzenker wrote:Hi,

in a nutshell:
* make geometry
* mesh
* import mesh in ElmerGUI
* steady state simulation
* output file with extension .vtu
* Heat equation
* Boundary conditions: one end at 300 K, one at 4 K
* Initial condition: choose a start temperature
* post-processing with ParaView

HTH,
Matthias
Thanks Matthias,
that's different to what I've found so far, and no more intuitive. Is this the sort of thing you mean: https://www.simscale.com/forum/t/determ ... ow-w/34599 because from there I'll need to do quite a lot of further digging?
mzenker
Posts: 1999
Joined: 07 Dec 2009, 11:49
Location: Germany

Re: Get steady state heat flux out of a thermal model

Post by mzenker »

Hi,

let's take it step by step.
Do you have a geometry? In which format? Which meshing tool are you going to use?

Matthias
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