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-   -   High residuals in OF (http://www.cfd-online.com/Forums/openfoam-post-processing/114330-high-residuals.html)

andrei.cimpoeru March 9, 2013 05:32

High residuals in OF
 
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Nucleophobe March 11, 2013 20:12

From checkMesh:
************************************************** *****
Checking geometry...
Overall domain bounding box (-10.000376 -10.007854 0) (11 10.007854 0.1)
Mesh (non-empty, non-wedge) directions (1 1 0)
Mesh (non-empty) directions (1 1 0)
All edges aligned with or perpendicular to non-empty directions.
Boundary openness (1.7765109e-18 -4.2555239e-18 -2.8634209e-15) OK.
Max cell openness = 3.3056977e-16 OK.
Max aspect ratio = 51.737546 OK.
Minumum face area = 5.0707659e-06. Maximum face area = 0.023398855. Face area magnitudes OK.
Min volume = 5.0707659e-07. Max volume = 0.0023398855. Total volume = 37.788576. Cell volumes OK.
Mesh non-orthogonality Max: 65.31021 average: 5.4153154
Non-orthogonality check OK.
Face pyramids OK.
Max skewness = 1.8229301 OK.
Coupled point location match (average 0) OK.

Mesh OK.
************************************************** *****

Your mesh looks pretty good. What is your Reynolds number? Are you using orthogonal correctors in your fvSolution file? Your skewness is fairly low but you might still need them.

Maybe post your boundary conditions as well, that could be the problem.

-Nuc


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