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ODE simulation problem

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I have modeled the paper "study of Nonlinear Effects in Electrokinetics" by soni, squires and meinhart (attached here)
here, i have defined an ODE as Ey_es+0.16*ztat [as in equation 26 in the paper]where my variable is zta and ztat is time derivative.
this Ey_es value has to come from the solution of Poisson equation. but when i am trying to solve, my model gives me error
Error: 6250
Failed to evaluate variable Jacobian.
- Variable: Ey_es
- Global scope


how can i fix this problem?
please help.
I have attached my model


0 Replies Last Post 2011/03/20 9:06 GMT-4
COMSOL Moderator

Hello naheed ferdous

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