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How to compute the second derivative of pressure

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Old   December 11, 2008, 00:33
Default Hi All, I would like comput
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Senthil Kabilan
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Hi All,

I would like compute the second derivative of p with respect to x, y and z and also impose a boundary condition that the second derivative of p wrt the normal direction is zero at the outlets. Where should I start? Anyone solved a similar problem? Any help will be very much appreciated.

Thanks all in advance!
Senthil
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Old   December 22, 2008, 16:53
Default volScalarField dpdx = fvc:grad
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Heng Xiao
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volScalarField dpdx = fvc:grad(p);
volScalarField dp2dxx = fvc:grad(dpdx);

Would that work? Not tried. I computed gradient of p only.
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