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icoFoam: Number of unkowns

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Old   April 29, 2011, 07:25
Default icoFoam: Number of unkowns
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Evren
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I have two quick questions in the frame of icoFoam:

say, an unstructured pure hexahedral mesh has M number of cells ;

1) Is the number of unknowns for pressure and velocity equal to M and the total number of unknowns equals to 2M?

2) How can one calculate the number of unknowns in general for OpenFOAM applications?

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Evren
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Old   April 29, 2011, 09:05
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Anton Kidess
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Velocity is a vector, thus the total number of unknowns will be 4*M.

In general a scalar equation will add M, a vector equation 3*M unknowns.
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