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Luis Delgado June 19, 2014 11:13

Periodicity and symmetry boundary condition
 
Hi,
I have a simple question: What is the difference between periodicity boundary condition and symmetry boundary condition. Thanks.
Luis

RodriguezFatz June 20, 2014 03:17

Hi,

For a periodic boundary condition you need two faces. Everything that leaves the domain through face A will directly enter the domain through face B.
Symmetry boundary condition means, that everything is symmetric at that face, which means a zero gradient for some values (Temperature, density, pressure, ...). All fluxes are zero here.


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