I am trying to re-create the results displayed in the (non-GUI) tutorial 13 using compressible Navier Stokes&the heat equation.
I have followe dthe instruction in the tutorial, and used the step.grd mesh provided, but I do not get the results in the tutorial, in fact I do not get any results at all: the simulation ends (''ERROR:: IterSolve: Failed convergence tolerances.'') in the first iteration of the heat equation (the first NS iteration was carried out succesfully).
I attach my sif and solver log files in the hope of some pointers.
Elmer Tutorial 13:Compressible flow passing a step
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Elmer Tutorial 13:Compressible flow passing a step
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Re: Elmer Tutorial 13:Compressible flow passing a step
Hi
Did you take the tutorials files from the nonGUI set in:
http://www.nic.funet.fi/pub/sci/physics/elmer/doc/
-Peter
Did you take the tutorials files from the nonGUI set in:
http://www.nic.funet.fi/pub/sci/physics/elmer/doc/
-Peter
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- Posts: 72
- Joined: 10 Nov 2009, 19:17
Re: Elmer Tutorial 13:Compressible flow passing a step
I constructed my own sif file from the instructions in the tutorial and the step.grd file I found in the distributio, albeit from the GUI section. In any case my test with a self constructed (in gmsh) step have also failed...
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Re: Elmer Tutorial 13:Compressible flow passing a step
So, I got a bit futher with this, though I must admit to feeling as though I shouldnt trust the convergence of the heat equation:
what does this do?
As an aside, if I set
Code: Select all
Compressibility Model = "Thermal"
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Re: Elmer Tutorial 13:Compressible flow passing a step
Hi
The convergence shows the relative change and for heat equation this is quite small since there is typically a large offset (which there isn't for the N-S). Hmm. perhaps it would alternatively make sense to compare the change to |x-<x>| rather than to |x|.
-Peter
The convergence shows the relative change and for heat equation this is quite small since there is typically a large offset (which there isn't for the N-S). Hmm. perhaps it would alternatively make sense to compare the change to |x-<x>| rather than to |x|.
-Peter
Re: Elmer Tutorial 13:Compressible flow passing a step
Hi everyone,
Any idea where I can find the FlowStepCompressible folder of example 11 non-GUI on this tutorial? I wish all these examples would be in one place in their own GitHub repository along with the documentation. Or at least the PDF would point to the right folder containing the example folder.
P.S. Nevermind. Found them here.
Any idea where I can find the FlowStepCompressible folder of example 11 non-GUI on this tutorial? I wish all these examples would be in one place in their own GitHub repository along with the documentation. Or at least the PDF would point to the right folder containing the example folder.
P.S. Nevermind. Found them here.