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Time steps decrease abruptly after stopping a time dependent simulation

Posted Oct 14, 2021, 7:52 a.m. EDT Electromagnetics, Low-Frequency Electromagnetics Version 5.6 1 Reply

Aki
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Hi, I am using magnetic field(mf) simulation. I find every time I continue a study after stop and saving it, the time steps will decrease greatly compared to the steps before I stop it. The simulation becomes too slow to output a solution due to the tiny steps. Are there any solutions to improve the situation?

1 Reply Last Post Oct 14, 2021, 10:10 a.m. EDT
Jeff Hiller COMSOL Employee

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Posted: 3 years ago Oct 14, 2021, 10:10 a.m. EDT

Hello Aki,

This Knowledgebase entry explains how the transient solver selects the initial time step size and discusses how you can affect the time step size by adjusting solver settings. I think this will answer your question.

Best,

Jeff

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Jeff Hiller
Hello Aki, This [Knowledgebase entry](https://www.comsol.com/support/knowledgebase/1254) explains how the transient solver selects the initial time step size and discusses how you can affect the time step size by adjusting solver settings. I think this will answer your question. Best, Jeff

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