Variable 'timestep' is not applicable in Comsol 5.5

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Does anyone know why 'timestep' is an unknown variable when used in Comsol 5.5, but it is applicable in Comsol 5.4.

Thanks

All the best,

Songcai


4 Replies Last Post Nov 30, 2020, 10:23 AM EST
Magnus Ringh COMSOL Employee

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Posted: 1 week ago Nov 25, 2020, 7:05 AM EST

Hi Songcai,

The timestep variable is still present in version 5.5 (and in version 5.6). Are you sure that you used it in a time-dependent study in COMSOL version 5.5?

Best regards, Magnus Ringh

Hi Songcai, The `timestep` variable is still present in version 5.5 (and in version 5.6). Are you sure that you used it in a time-dependent study in COMSOL version 5.5? Best regards, Magnus Ringh

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Posted: 3 days ago Nov 29, 2020, 12:44 AM EST

Hi Songcai,

The timestep variable is still present in version 5.5 (and in version 5.6). Are you sure that you used it in a time-dependent study in COMSOL version 5.5?

Best regards, Magnus Ringh

Thanks for your reply, Magnus. I am sure that i used a time-dependent solver in my study. You can see from the attached screenshot.

Thanks,

All the best,

Songcai

>Hi Songcai, > >The `timestep` variable is still present in version 5.5 (and in version 5.6). Are you sure that you used it in a time-dependent study in COMSOL version 5.5? > >Best regards, >Magnus Ringh Thanks for your reply, Magnus. I am sure that i used a time-dependent solver in my study. You can see from the attached screenshot. Thanks, All the best, Songcai ![](http://)


Magnus Ringh COMSOL Employee

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Posted: 2 days ago Nov 30, 2020, 5:28 AM EST

Hi Songcai,

It might be that you use the timestep variable where it is not available. It is only available in solver settings during the solution process, such as in a Stop Condition node to stop the solver's time stepping when the time step reaches some threshold value.

Best regards,

Magnus Ringh

Hi Songcai, It might be that you use the `timestep` variable where it is not available. It is only available in solver settings during the solution process, such as in a **Stop Condition** node to stop the solver's time stepping when the time step reaches some threshold value. Best regards, Magnus Ringh

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Posted: 2 days ago Nov 30, 2020, 10:23 AM EST

Hi Songcai,

It might be that you use the timestep variable where it is not available. It is only available in solver settings during the solution process, such as in a Stop Condition node to stop the solver's time stepping when the time step reaches some threshold value.

Best regards,

Magnus Ringh

Hi, Magnus. I see what you mean, but I have just tried it in version 5.6, it works well. The screenshot from version 5.6 is attached. Of course, it is applicable in Comsol 5.4 as well.

Thanks,

All the best,

Songcai

>Hi Songcai, > >It might be that you use the `timestep` variable where it is not available. It is only available in solver settings during the solution process, such as in a **Stop Condition** node to stop the solver's time stepping when the time step reaches some threshold value. > >Best regards, > >Magnus Ringh Hi, Magnus. I see what you mean, but I have just tried it in version 5.6, it works well. The screenshot from version 5.6 is attached. Of course, it is applicable in Comsol 5.4 as well. Thanks, All the best, Songcai ![](http://)

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