Note: This discussion is about an older version of the COMSOL Multiphysics® software. The information provided may be out of date.
Discussion Closed This discussion was created more than 6 months ago and has been closed. To start a new discussion with a link back to this one, click here.
Undefined value found error.
Posted Nov 7, 2013, 3:51 a.m. EST Fluid & Heat, Computational Fluid Dynamics (CFD), Chemical Reaction Engineering, Studies & Solvers Version 4.3b 2 Replies
Please login with a confirmed email address before reporting spam
Can anyone help me to resolve this error while solving solid structural mechanics problem,
What is NaN/Inf ?
Error Message :
Undefined value found.
- Detail: Undefined value found in the equation residual vector.
There are 2032 degrees of freedom giving NaN/Inf in the vector for the variable mod1.u.
at coordinates: (-0.000868043,0.0470507,0.120069), (-0.00258011,0.0479841,0.120069), (-0.000868043,0.0493914,0.120069), (-0.00313503,0.0493914,0.120069), (-0.00189941,0.0465659,0.118934), ...
There are 2032 degrees of freedom giving NaN/Inf in the vector for the variable mod1.v.
at coordinates: (-0.000868043,0.0470507,0.120069), (-0.00258011,0.0479841,0.120069), (-0.000868043,0.0493914,0.120069), (-0.00313503,0.0493914,0.120069), (-0.00189941,0.0465659,0.118934), ...
There are 2032 degrees of freedom giving NaN/Inf in the vector for the variable mod1.w.
at coordinates: (-0.000868043,0.0470507,0.120069), (-0.00258011,0.0479841,0.120069), (-0.000868043,0.0493914,0.120069), (-0.00313503,0.0493914,0.120069), (-0.00189941,0.0465659,0.118934), ...
Please login with a confirmed email address before reporting spam
Inf stands for Infinity and occures (at least in Matlab) if you try to divide by 0 or the result of your calculation does not fit into the datatype (like 2^2000).
I think the beaviour of COMSOL is similar.
So check if you set all the required parameters to a resonable value.
Please login with a confirmed email address before reporting spam
i am solving a problem relating to the transportation of fluid(gas).. but i am getting error as given below... what is the reason and how can i fix it...???
Undefined value found.
- Detail: Undefined value found in the equation residual vector.
There are 24844 degrees of freedom giving NaN/Inf in the vector for the variable mod1.T
at coordinates: (0.00045,0.119949), (0.00045,0.12), (0.00045,0.119975), (0.000437756,0.119962), (0.000425512,0.119975), ...
There are 24844 degrees of freedom giving NaN/Inf in the vector for the variable mod1.u
at coordinates: (0.00045,0.119949), (0.00045,0.12), (0.00045,0.119975), (0.000437756,0.119962), (0.000425512,0.119975), ...
There are 24844 degrees of freedom giving NaN/Inf in the vector for the variable mod1.v
at coordinates: (0.00045,0.119949), (0.00045,0.12), (0.00045,0.119975), (0.000437756,0.119962), (0.000425512,0.119975), ...
There are 24844 degrees of freedom giving NaN/Inf in the vector for the variable mod1.y1
at coordinates: (0.00045,0.119949), (0.00045,0.12), (0.00045,0.119975), (0.000437756,0.119962), (0.000425512,0.119975), ...
There are 24844 degrees of freedom giving NaN/Inf in the vector for the variable mod1.y2
at coordinates: (0.00045,0.119949), (0.00045,0.12), (0.00045,0.119975), (0.000437756,0.119962), (0.000425512,0.119975), ...
There are 24844 degrees of freedom giving NaN/Inf in the vector for the variable mod1.y3
at coordinates: (0.00045,0.119949), (0.00045,0.12), (0.00045,0.119975), (0.000437756,0.119962), (0.000425512,0.119975), ...