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error in residual computation

Posted 19.04.2011, 12:30 GMT-4 0 Replies

Rajeswaran Radhakrishnan
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Hi,

I am using comsol 3.5a for the modeling of Li ion batteries.
I am a new user,So i am trying to redo the same model which is given in comsol already for the Li ion battery.
But I got the following error

Error:
Time 3.746334577378822:
Error in residual computation.
Power_of_negative
Function: ^
Failed_to_evaluate_variable
Variable: i0, Defined_as: (((k_pos*((c1max_pos-c1s_pos)^aA_pos))*(c1s_pos^aC_pos))*(c2^aA_pos))
Failed_to_evaluate_variable
Variable: i_loc, Defined_as: ((exp((((Far*aA_pos)*eta)/(Rg*T)))-exp(((((-aC_pos)*Far)*eta)/(Rg*T))))*i0)
Failed_to_evaluate_expression
Expression: d(((-K1eff*phi1x*test(phi1x)/L_pos-i_loc*Sa_pos*L_pos*test(phi1))-(0))*(dvol),{test@1})
Last time step is not converged.

Can anyone please help me in this case?

Thanks,
Rajesh.
0 Replies Last Post 19.04.2011, 12:30 GMT-4
COMSOL Moderator

Hello Rajeswaran Radhakrishnan

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