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Error in defining variable
Posted 28 mars 2022, 03:37 UTC−4 Structural & Acoustics, General 1 Reply
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I am a student and very new to using COMSOL. I've came across some errors that I am unable to fix.
- Feature: Stationary Solver 1 (sol1/s1) Undefined variable.
- Variable: comp1.c
- Geometry: geom1
- Domain: 3 Failed to evaluate variable.
- Variable: comp1.dc_eff
- Defined as: dep((comp1.c*(unit_m_cf^3))/unit_mol_cf) Failed to evaluate expression.
- Expression: comp1.dc_eff Failed to evaluate operator.
- Operator: mean
- Geometry: geom1
- Boundary: 14 Failed to evaluate expression.
- Expression: mean(comp1.dc_eff) Failed to evaluate variable.
- Variable: comp1.dc_eff
- Geometry: geom1
- Boundary: 14
I've attached some pictures. Please help
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Hello Eng Chun,
It appears that you are trying to pass the variable c to the function dc_eff in portions of your geometry, including domain 3, where no variable by that name exists.
If you can post your mph file (with mesh and solution cleared to keep it small) to this thread, participants in this Discussion Forum will be able to help with more specificity. Screenshots are not the best for figuring out what is happening in your model.
Best,
Jeff
-------------------Jeff Hiller