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Matrix coefficients of fvm::grad(p) in foam-extend

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Old   October 26, 2016, 11:47
Default Matrix coefficients of fvm::grad(p) in foam-extend
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Hi All,
I am new to the forum and with foam-extend as well.
I am trying export the matrix M of the discretized gradient of the pressure created by foam-extend so that I can calculate the gradient of the pressure as M*P.

Starting from
blockVectorMatrix pInU(fvm::grad(p));

I export pInU.diag(), pInU.upper(), pInU.lower(), pInU.lduAddr().upperAddr() and pInU.lduAddr().lowerAddr().

Is anyone aware if I can reconstruct the matrix with the standard lduAddressing in OpenFoam and if that are the only quantities I need to export?

Many thanks,

Stefano
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fvm::grad(p), gradient, implicit, ldumatrix

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