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Error 6194 - Attempt to evaluate non-integral power of negative number??

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i am geting this error when i solve my model... I am solving 6 eqns..
Why do i get this again and again..


Error: 6194
Attempt to evaluate non-integral power of negative number
- Function: power
Failed to evaluate variable
- Variable: DeffO2_H2O
- Defined as: ((2.8200000000000001e-005/((T/308.10000000000002)^1.5))*(e_mac^1.5))
Failed to evaluate variable
- Variable: D12_MSc
- Defined as: DeffO2_H2O
Failed to evaluate variable
- Variable: DE11_MSc
- Defined as: (((((((wN2^2)*x_wO2_MSc)*x_wH2Oc_MSc)/D12_MSc)+((((wH2Oc^2)*x_wO2_MSc)*x_wN2_MSc)/D13_MSc))+(((((wH2Oc+wN2)^2)*x_wH2Oc_MSc)*x_wN2_MSc)/D23_MSc))/(((((((x_wO2_MSc*x_wH2Oc_MSc)/D12_MSc)*x_wO2_MSc)*x_wN2_MSc)/D13_MSc)+(((((x_wO2_MSc*x_wH2Oc_MSc)/D12_MSc)*x_wH2Oc_MSc)*x_wN2_MSc)/D23_MSc))+(((((x_wO2_MSc*x_wN2_MSc)/D13_MSc)*x_wH2Oc_MSc)*x_wN2_MSc)/D23_MSc)))
Failed to evaluate variable
- Variable: dflux_wO2_x_MSc
- Defined as: (-(((rho_MSc*wO2)*((((((DE11_MSc*diff(((wO2/M_wO2_MSc)/(((wO2/M_wO2_MSc)+(wH2Oc/M_wH2Oc_MSc))+(((1-wO2)-wH2Oc)/M_wN2_MSc))),x))+(DE12_MSc*diff(((wH2Oc/M_wH2Oc_MSc)/(((wO2/M_wO2_MSc)+(wH2Oc/M_wH2Oc_MSc))+(((1-wO2)-wH2Oc)/M_wN2_MSc))),x)))+(DE13_MSc*diff(((((1-wO2)-wH2Oc)/M_wN2_MSc)/(((wO2/M_wO2_MSc)+(wH2Oc/M_wH2Oc_MSc))+(((1-wO2)-wH2Oc)/M_wN2_MSc))),x)))+(((DE11_MSc*(x_wO2_MSc-wO2))*diff(P_MSc,x))/P_MSc))+(((DE12_MSc*(x_wH2Oc_MSc-wH2Oc))*diff(P_MSc,x))/P_MSc))+(((DE13_MSc*(x_wN2_MSc-wN2))*diff(P_MSc,x))/P_MSc)))+((DiT_wO2_MSc*diff(T_MSc,x))/T_MSc)))
Failed to evaluate expression
- Expression: dflux_wO2_x_MSc

1 Reply Last Post 22 nov 2010, 02:50 GMT-5
COMSOL Moderator

Hello Vishal Rajpurohit

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Posted: 1 decade ago 22 nov 2010, 02:50 GMT-5
Vishal,

Do you already solve those problems? Would you like to share me how, because I also have the same problem.

Thanks and Regards,
Haris F
Vishal, Do you already solve those problems? Would you like to share me how, because I also have the same problem. Thanks and Regards, Haris F

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