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Size of control volume

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Old   September 1, 2009, 22:13
Default Size of control volume
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Why do the results change drastically if I increase the size of the control volume (eg. the mesh around an airfoil)?
The result should improve for a bigger control volume, however in my case the results diverge.
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Old   September 2, 2009, 02:28
Christof Benz
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Hi John,

in most cases you obtain a better result as much as fine your mesh is. Not the other way. An exception from this rule is for example spray-simulation.

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control volume size, mesh size, openfoam

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