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error in residual computation in Li ion battery simulation.
Posted 20.04.2011, 10:56 GMT-4 Battery Design Version 3.5a 1 Reply
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I am using comsol 3.5a for simulating Li ion battery.I am a new user ,so I am trying to redo the same model which is given in comsol already.But I get 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 you please help me out in this?
Thanks,
Rajeswaran.
Hello Rajeswaran Radhakrishnan
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No clue what might cause this problem.
One thing is that I have quite some logic function (T>Tm) etc in my materials properties. This might create step functions, and cause the error?