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Getting streamfunction field by post processing the velocity field

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Old   June 9, 2012, 09:17
Default Getting streamfunction field by post processing the velocity field
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G. S.
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Hi CFD guys,

I developed a collocated 2D CVFEM code for unstructured grids and I want to get the streamfunction field from the velocity field I get when I solve the momentum and continuity equations.

How can I do this???

Thanks in advance...
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Old   June 9, 2012, 13:22
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Filippo Maria Denaro
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Quote:
Originally Posted by gerardosrez View Post
Hi CFD guys,

I developed a collocated 2D CVFEM code for unstructured grids and I want to get the streamfunction field from the velocity field I get when I solve the momentum and continuity equations.

How can I do this???

Thanks in advance...
a choice: you can compute the vorticity field rot V then solving for Div Grad Psi = rot V
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Old   June 9, 2012, 13:44
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Originally Posted by FMDenaro View Post
a choice: you can compute the vorticity field rot V then solving for Div Grad Psi = rot V
Thanks FMDenaro but for solving this I need boundary conditions, so my next question is what are the boundary conditions for this system?

Thank you very much FMDenaro...
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Old   June 9, 2012, 13:47
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when you know the velocity on the boundary then you know also the Psi assignment....
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