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Laplacian Schemes

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Old   May 18, 2013, 16:20
Default Laplacian Schemes
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Eric R
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Can someone tell me what term this line refers to in the fvSchemes dictionary?

Code:
laplacian((1|A(U)),p)
In other words, what is A(U) and what does this entire term look like/mean on paper? I understand the vertical bar | is a bitwise operator.
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Old   May 18, 2013, 19:02
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Eric R
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I suppose I may have *sort of* solved my own question. Can anyone confirm that this has to do with pressure-velocity coupling- where one would solve Poisson equations for the pressure correction? I consider myself a beginner when it comes to the depths of what's inside the code.
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Old   May 19, 2013, 13:03
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Niels Gjoel Jacobsen
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Hallo,

Yes, it is the Laplacian used for the solution to the pressure Poisson equation. The

Code:
(1|A(U))
term is the diffusivity of pressure, and it is the inverse of the diagonal elements in the discretised momentum equation, i.e. the diagonal of the left hand side of the matrix system.

Kind regards

Niels
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Old   May 19, 2013, 22:59
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Eric R
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Understood. Thank you.
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