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Divergence free initial field

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Old   October 26, 2005, 06:44
Default Since OpenFOAM seems to implem
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Maka Mohu
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Since OpenFOAM seems to implement the PISO version that deals with absolute variables instead of fractions of correction, this will require a divergence free initial field (Isaa 86). In the case of turbulent channel flow simulation where initial field is random Gaussian, do I really have to make the field divergence free or I understood something wrong.

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Old   October 26, 2005, 08:41
Default No, don't bother - the first p
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Hrvoje Jasak
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No, don't bother - the first pressure solution will do it for you. If you absolutely insist (e.g. detailed transient), run potentialFoam first.

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Old   October 26, 2005, 08:52
Default Does this mean that H() includ
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Does this mean that H() includes d_i (u_i)n (old value) so I do not need to worry about the condition of divergence free?
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