3D Transient Heat Equation Initial Conditions Question

Numerical methods and mathematical models of Elmer
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mgoetz
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3D Transient Heat Equation Initial Conditions Question

Post by mgoetz »

I am currently, successfully, running the transient heat equation and linear elasticity equation sets together to find the max stresses in an object due to an incident heat flux. I would like to separate this into two runs. The first run would use the transient heat equation equation set to output the nodal temperature field of the object at the final timestep. The second run would use the steady state linear elasticity equation set to compute the max stresses in the object using the previously calculated nodal temperature field as the initial temperature of the object. I have done this with another solver and successfully recreated the max stress values I was looking for. My questions are:

Can you define the initial temperature of each node in a mesh from a .dat file?

If so, can this .dat file be output from the final timestep of a transient heat equation simulation?

Thanks for your help.
raback
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Re: 3D Transient Heat Equation Initial Conditions Question

Post by raback »

Hi

Sure. In the Simulation section you define "Output File" which can be used for restart when giving the same filename as "Restart File" for the 2nd run.

Look at these consistency tests for further examples:

Code: Select all

elmeruser@elmeruser-VirtualBox:~/elmerfem/fem/tests$ ls | grep Restart
ElasticBeamRestart
MeshLevelsRestart
NaturalConvectionRestart
NaturalConvectionRestartCycle
NonconformingRestart
NonconformingRestart2
NonconformingRestart2par
NonconformingRestart3
NonconformingRestart4
NonconformingRestartStructmap
-Peter
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