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Error while solving stiff problems in COMSOL 5.3

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Hi,

So I am trying to solve a stiff problem using Global ODEs and DAEs. The problem has 32 differential equations and I have inserted all the initial values correctly, however, I keep getting this error. - Feature: Time-Dependent Solver 1 (sol1/t1) Failed to find consistent initial values. Attempt to evaluate real logarithm of negative number. Last time step is not converged.

The same problem I solved using MATLAB ODE15s solver and with the same set of initial conditions. May I know why can't I solve it using COMSOL.

Thank you very much in advance!

Best regards, Shannon


0 Replies Last Post 29 janv. 2021, 15:15 UTC−5
COMSOL Moderator

Hello Shannon Fernandes

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