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SOFC Modelling undefined variable?
Posted 9 oct. 2017, 13:56 UTC−4 Battery Design, Electrochemistry Version 5.2a 0 Replies
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Hello, I am currently modelling a SOFC using COMSOL 5.2a with the same approach as done in SOFC unit cell tutorial, but with different geometry. Boundary condition in channels are also taken different (velocity at place of pressure). Rest I am doing exactly the same thing as done in tutorial. While running the simulation, I get errors which i am attaching here.
Undefined variable. - Variable: comp1.fp.pA - Geometry: geom1 - Domain: 4 Failed to evaluate variable. - Variable: comp1.tcs.cdm1.minput_pressure - Defined as: comp1.fp.pA Failed to evaluate variable. - Variable: comp1.tcs.rho - Defined as: (comp1.tcs.cdm1.minput_pressurecomp1.tcs.Mn)/(R_constcomp1.tcs.cdm1.minput_temperature) Failed to evaluate variable. - Variable: comp1.fp2.rho - Defined as: comp1.tcs.rho Failed to evaluate expression. - Expression: dvol(((-comp1.fp2.rho)comp1.u_ct)(1/comp1.fp2.epsilon_p)) Failed to evaluate Jacobian of expression. - Expression: (-comp1.fp2.rho(comp1.u_cttest(comp1.u_c)+comp1.v_cttest(comp1.v_c))/comp1.fp2.epsilon_p)*(dvol)
Please suggest me help for this error.
Thanks
Hello Rishabh Mathur
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