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given tolerances are satisfied.
Posted 26 ago 2010, 05:58 GMT-4 2 Replies
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hello,
I did a transiant analysis for time 0 till 200e-6 seconds with step 0.1e-6 seconds and I apply a sinus boundry condition as:
sin(2*pi*102940*t)*(t<9.8e-6)( just one cycle with frequancy 102940 Hz which means 9.7144e-6 second period). But I encouter message:
Error:
Time 9.023674779079128e-006:
Failed to find time step so that given tolerances are satisfied.
Last time step is not converged.
could you please help me ?
Thanks
I did a transiant analysis for time 0 till 200e-6 seconds with step 0.1e-6 seconds and I apply a sinus boundry condition as:
sin(2*pi*102940*t)*(t<9.8e-6)( just one cycle with frequancy 102940 Hz which means 9.7144e-6 second period). But I encouter message:
Error:
Time 9.023674779079128e-006:
Failed to find time step so that given tolerances are satisfied.
Last time step is not converged.
could you please help me ?
Thanks
2 Replies Last Post 26 ago 2010, 08:25 GMT-4
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Posted:
1 decade ago
Maybe your model doesn't like 0 as inlet velocity, or the change is too much that solver can not handle it. Usually it is the best to use a smoothed function (like step) to reduce the flow. Just some ideas.
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Posted:
1 decade ago
hello daniel,
If I want to create a delta pulse inested of a sinus wave how could I do that? I know how to create a pulse with heaviside but if I want to create a delta pulse how could I make it in comsol?
Thank you
If I want to create a delta pulse inested of a sinus wave how could I do that? I know how to create a pulse with heaviside but if I want to create a delta pulse how could I make it in comsol?
Thank you