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In this blog, quick reference notes about OpenFOAM are posted in a form of a summary to address a specific topic per post, which I think could be helpful as a reminder for my Alzheimer condition
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Set (Initial) Internal Fields Using #codeStream

Posted April 23, 2012 at 13:55 by Hisham (Notes for OpenFOAM!)
To set up (initial) internal fields of variables according to an expression, one can use the #codeStream feature as:
Code:
internalField  #codeStream
{
    code
    #{
        const IOdictionary& d = static_cast<const IOdictionary&>(dict);
        const fvMesh& mesh = refCast<const fvMesh>(d.db());
        scalarField fld(mesh.nCells(), 12.34);// uniform value of the field as 12.34 or just fld(mesh.nCells())
...
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