Comsol: Global Variables Plot Time Resolution

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SUMMARY

The discussion addresses an issue with plotting reaction forces in COMSOL Multiphysics for a 3D thermo-structural problem. The user experienced limited interpolation of output times due to the "free" setting in the "Time Stepping" section of the "solve parameters." Switching this setting to "strict" resolved the problem, allowing for accurate plotting of all stored output times from 0 to 10 seconds in 0.01-second increments.

PREREQUISITES
  • Familiarity with COMSOL Multiphysics software
  • Understanding of thermo-structural analysis
  • Knowledge of solver parameters and time stepping techniques
  • Basic experience with plotting and data visualization in simulation software
NEXT STEPS
  • Explore COMSOL Multiphysics documentation on "Time Stepping" settings
  • Learn about advanced solver configurations in COMSOL
  • Research best practices for plotting global variables in simulation outputs
  • Investigate interpolation methods for time-dependent data in COMSOL
USEFUL FOR

This discussion is beneficial for engineers and researchers using COMSOL Multiphysics, particularly those involved in thermo-structural simulations and data visualization. It is also useful for users seeking to optimize solver settings for improved output accuracy.

georg
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Hi everybody,
I've got a problem with the Global Variables Plot in a 3D thermo-structural problem. I want to plot the reaction force for all the stored output times, but the interpolation only takes 7 steps of the solution, although the "times" in my time stepping are 0:.01:10 .
In my opinion the problem is anything with the solver manager, but I'm not sure. Could somebody please give me a hint? Thx!
 
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Problem solved...
In the "solve parameters", the chart "Time Stepping" ,then "Time steps taken by solver", I had the setting "free" which was not such a good idea. Works much better with "strict".
 

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