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Mixture Model Turbulent Flow Singular matrix for more refined mesh....help please
Posted 2011年3月3日 GMT-5 11:29 Computational Fluid Dynamics (CFD), Mesh, Parameters, Variables, & Functions Version 4.0a 0 Replies
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I'm trying to simulate a solid-liquid homogeneous flow to compare pressure drop with real data.
The pressure drop begins to converge to te values I have from experimentation, however, as I refine the mesh (as you can see in the file I have uploaded), I get the following error:
Segregated group X2
Singular matrix.
- Detail:
There are 1046 equations giving NaN/Inf in the matrix rows for the variable mod1.ep
at coordinates: (0.0242203,2.04102), (0.0111238,2.07098), (0.0148442,2.06887), (0.0185711,2.06674), (0.0167076,2.0678), ...
There are 59 equations giving NaN/Inf in the matrix rows for the variable mod1.k
at coordinates: (0.026115,2.07236), (0.026115,2.07735), (0.026115,2.08234), (0.026115,2.0998), (0.026115,2.1023), ...
There are 1036 degrees of freedom giving NaN/Inf in the matrix columns for the variable mod1.ep
at coordinates: (0.0242203,2.04102), (0.0111238,2.07098), (0.0148442,2.06887), (0.0185711,2.06674), (0.0167076,2.0678), ...
There are 59 degrees of freedom giving NaN/Inf in the matrix columns for the variable mod1.k
at coordinates: (0.026115,2.07236), (0.026115,2.07735), (0.026115,2.08234), (0.026115,2.0998), (0.026115,2.1023), ...
I get convergence for inferior mesh sizes.
Hope anyone can help.
Much appreciated.
Rui
Attachments:
Hello Rui Silva
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