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Global Variable using Local Variable

Posted 23 oct. 2019, 18:17 UTC−4 Parameters, Variables, & Functions, Equation-Based Modeling 3 Replies

Biswarup Goswami
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I want to define a global variable using some local variables which were computed by the simulation. How can I do that.

Thank you.

3 Replies Last Post 29 oct. 2019, 03:41 UTC−4
Lars Gregersen COMSOL Employee

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Posted: 5 years ago 24 oct. 2019, 07:52 UTC−4
Updated: 5 years ago 24 oct. 2019, 05:35 UTC−4

Use Components->Definitions->Component Couplings (from version 5.5: Components->Definitions->Nonlocal Couplings) to add a coupling operator from whatever place you wish to have something available globally. An Integration operator is commonly used for this, but the other operators are also useful depending on your needs.

You can use the generated operator where you wish to use it since they are global.

Note that there are other nonlocal couplings available that "copies" data from one part of the model to another part.

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Lars Gregersen
Comsol Denmark
Use **Components->Definitions->Component Couplings** (from version 5.5: **Components->Definitions->Nonlocal Couplings**) to add a coupling operator from whatever place you wish to have something available globally. An Integration operator is commonly used for this, but the other operators are also useful depending on your needs. You can use the generated operator where you wish to use it since they are global. Note that there are other nonlocal couplings available that "copies" data from one part of the model to another part.
Robert Koslover Certified Consultant
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Posted: 5 years ago 28 oct. 2019, 19:41 UTC−4
Updated: 5 years ago 28 oct. 2019, 15:42 UTC−4

Hello, Lars. What is this "version 5.5" of which you speak? :-)

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Scientific Applications & Research Associates (SARA) Inc.
www.comsol.com/partners-consultants/certified-consultants/sara
Hello, Lars. What is this "version 5.5" of which you speak? :-)
Henrik Sönnerlind COMSOL Employee

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Posted: 5 years ago 29 oct. 2019, 03:41 UTC−4
Updated: 5 years ago 29 oct. 2019, 04:23 UTC−4

Hi Robert,

That is the version to be released soon. Those who visited the user conferences already have a pre-release.

From version 5.5, this menu entry has changed its name in order to make it more clear what you will actually find under it.

Regards,
Henrik

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Henrik Sönnerlind
COMSOL
Hi Robert, That is the version to be released soon. Those who visited the user conferences already have a pre-release. From version 5.5, this menu entry has changed its name in order to make it more clear what you will actually find under it. Regards, Henrik

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