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Two phase flow with structure error

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Hi,

I have an issue with a phase field model which contains two fluids and a structure. I would like to see the effect of fluids on the structure. However, I am not sure what I am doing wrong and receiving the error below.

I followed this application https://www.comsol.com/model/two-phase-flow-with-fluid-structure-interaction-4515

Undefined variable.
- Variable: comp2.pf2.u_primez
- Geometry: geom2
- Domain: 3
Failed to evaluate Jacobian of expression.
- Expression: dvol_spatial*(r*(pi*(2*(comp2.pf2.res_prime*(-(comp2.pf2.u_primer*comp2.pf2.tau_prime))))))
Failed to evaluate Jacobian of expression.
- Expression: (2*comp2.pf2.conservationCompensation*pi*r)*(dvol_spatial)

I'd highly appreciate any recommendations.



0 Replies Last Post Mar 7, 2023, 6:43 a.m. EST
COMSOL Moderator

Hello Ibrahim

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