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Can not use Previous Solution in Comsol

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Solution > Time-Dependent Solver > Previous solution

I use ODE and DAE to solve my issues. It's ok to store previous solution before I add Events under ODE and DAE interface.

Whenever I us Events, Comsol show a error message box:

" The following feature has encountered a problem:
Failed to find consistent initial values.
Singular matrix.

There are 1 void equations (empty rows in matrix) for the variable comp1.hpp.
and similarly for the degrees of freedom (empty columns in matrix).
Last time step is not converged.
- Feature: Time-Dependent Solver 1 (sol1/t1) "

I was definitely confused about this.

Can somebody explain to me and help me with a solution ?

Much appreciated !

2 Replies Last Post 8 avr. 2016, 17:10 UTC−4
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Hello Phuong Nguyen

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Posted: 8 years ago 8 avr. 2016, 09:02 UTC−4
Hi,

I'm having the same problem. Did you already find a solution?

Kind regards,
Steven
Hi, I'm having the same problem. Did you already find a solution? Kind regards, Steven

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Posted: 8 years ago 8 avr. 2016, 17:10 UTC−4
Can you send your model?
Can you send your model?

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