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how can write convective BC on outlet in groovyBC?

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Old   July 13, 2013, 08:46
Default how can write convective BC on outlet in groovyBC?
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Ehsan
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in which part of convective BC there is its formulation and how can apply it in groovyBC?
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Old   July 13, 2013, 13:00
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There is also an "advective" boundary condition by default. I assume this does exactly what you require.
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Old   July 13, 2013, 16:28
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Hi Bernhard
could you please give me some instructions about when these type of boundary conditions are applicable and useful?
are ther useful for unsteady flows?
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Old   July 15, 2013, 04:51
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Why do you want to use it?

I would use advective BC's at outlet for typical convection-diffusion equations (e.g. concentration transport). Have a look in the .H of the boundary condition, it contains a lot of info about what is actually done. They are certainly useful for unsteady flows.
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