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-   -   appropriate BC - top half of the pipe (http://www.cfd-online.com/Forums/fluent/93937-appropriate-bc-top-half-pipe.html)

Diegoesteban October 31, 2011 11:50

appropriate BC - top half of the pipe
 
Hi,

Im simulating a pipe with a ke model, considering the top half of the pipe. My problem is with the boundary conditions. I set “velocity-inlet” and “pressure-outlet” for the inlet and outlet faces. What is the more appropriate BC for the symmetry plane? “symmetry” or “axis”? What is the difference?

-mAx- November 2, 2011 02:14

*symmetry means symmetric with respect of a plane
*axis means revolution-axisymmetric with respect of an axis (solution theta-independant with theta: rotation-angle around your axis)

When you are using axis, you must work with 2d solver.

Diegoesteban November 2, 2011 08:03

thank you very much!


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