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Note: This discussion is about an older version of the COMSOL Multiphysics® software. The information provided may be out of date.

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Use precedent results as initial condition

Posted 2011年4月18日 GMT-4 15:55 RF & Microwave Engineering, Parameters, Variables, & Functions, Studies & Solvers Version 4.2a 3 Replies

Gabriel Caron
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Hi,

I was wondering if there’s a way to call-back and use results issued from a precedent solving.
The main idea, is to set them as the new initials condition for a new solving.

Can we use ‘ study steps ‘ to achieve this ?
That sound like emulating Time-Dependent solving …


Regards,
3 Replies Last Post 2011年12月20日 GMT-5 11:34
Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)
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Posted: 1 decade ago 2011年4月18日 GMT-4 16:47
Hi

you can solve first a stationary case and then store the results and relaunch a transient or a eigenfrequency or... in v4.0 you must do this manually, in v4.1 you select the two solvers and COMSOL will generate the sequence for you. Check the settings in teh Dependent variable node of the solver tree, to select how initial values are used

--
Good luck
Ivar
Hi you can solve first a stationary case and then store the results and relaunch a transient or a eigenfrequency or... in v4.0 you must do this manually, in v4.1 you select the two solvers and COMSOL will generate the sequence for you. Check the settings in teh Dependent variable node of the solver tree, to select how initial values are used -- Good luck Ivar
Felipe Beltran-Mejia
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Posted: 1 decade ago 2011年12月19日 GMT-5 14:38
Hi,

I'm having a similar problem.

I want to make a Modal Analysis for an optical waveguide. After solving, I want to make a parametric sweep using the global scale (M) as a parameter. So I want to reuse the previous result to use it as an approximation for the modes in the scaled waveguide.

Does anyone know how to do this?

Thanks in advance.
Felipe.
Hi, I'm having a similar problem. I want to make a Modal Analysis for an optical waveguide. After solving, I want to make a parametric sweep using the global scale (M) as a parameter. So I want to reuse the previous result to use it as an approximation for the modes in the scaled waveguide. Does anyone know how to do this? Thanks in advance. Felipe.
Felipe Beltran-Mejia
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Posted: 1 decade ago 2011年12月20日 GMT-5 11:34
Self response:

The way to do this is using the Matlab LiveLink.

cheers,
Felipe.
Self response: The way to do this is using the Matlab LiveLink. cheers, Felipe.

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