How to Couple Two Modules in COMSOL?

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SUMMARY

The discussion focuses on coupling two modules in COMSOL, specifically using the solution vector 'u' from Module 1 as a parameter in Module 2. The user successfully implemented the expression '0.95*u' but encountered issues when attempting to add a previously saved vector 'a' to it, resulting in the expression 'a + 0.95*u' not functioning as expected. The user is operating on COMSOL version 3.4 and seeks assistance in resolving the component-wise addition of the vectors.

PREREQUISITES
  • Familiarity with COMSOL Multiphysics, specifically version 3.4
  • Understanding of vector operations in mathematical modeling
  • Knowledge of subdomain settings in COMSOL modules
  • Experience with parameter passing between modules in simulation software
NEXT STEPS
  • Research how to perform component-wise vector addition in COMSOL
  • Explore the documentation for COMSOL 3.4 regarding subdomain settings
  • Learn about vector data types and operations in COMSOL Multiphysics
  • Investigate common troubleshooting techniques for module coupling in COMSOL
USEFUL FOR

This discussion is beneficial for simulation engineers, researchers using COMSOL Multiphysics, and anyone involved in multi-module coupling and vector operations within the software.

jig saw
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Hi,

I want to couple two different modules of COMSOL. For example u is the solution of Module 1 and I want to give 0.95*u+a as subdomain settings parameter in module 2. Here a is a vector. I have succeeded with u and 0.95*u to use as subdomain settings parameter of module 2 but when I add a , it does not work.

Can anyone help me please?
 
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u is also a vector, try adding them component by component.

Which version are you running? I'll try to offer better advice once I get to my desk (don't have COMSOL on my laptop).
 
NeoDevin said:
u is also a vector, try adding them component by component.

Which version are you running? I'll try to offer better advice once I get to my desk (don't have COMSOL on my laptop).

I am using COMSOL 3.4.
Let me explain in detail,
I have saved a vector a previously. Then from current solution of module 1 is u
In the subdomain settings of module 2 I have written
a+0.95*u
As the length of each vector is same, it should add them component by component. But it does not work.
 

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