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-   -   Getting streamfunction field by post processing the velocity field (http://www.cfd-online.com/Forums/main/103053-getting-streamfunction-field-post-processing-velocity-field.html)

gerardosrez June 9, 2012 09:17

Getting streamfunction field by post processing the velocity field
 
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...

FMDenaro June 9, 2012 13:22

Quote:

Originally Posted by gerardosrez (Post 365595)
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

gerardosrez June 9, 2012 13:44

Quote:

Originally Posted by FMDenaro (Post 365612)
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...

FMDenaro June 9, 2012 13:47

when you know the velocity on the boundary then you know also the Psi assignment....


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