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Old   April 16, 2010, 11:51
Default jumpCyclic?
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Jerry Lee
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Does any Foamer knows how to use jumpCyclic boundary condition? I am trying to prescribe a jump in velocity across an internal patch (similar to a fan) in dieselFoam in v1.5.x.

Many thanks in advance.
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Old   April 16, 2010, 15:10
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Jerry Lee
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I managed to get it to run with dieselFoam but could not figure out how to specify the value of delta(p) across the internal patch declared jumpCyclic.

I can use either a delta(p) across the patch of a delta(U)across the patch (in the dirction normal to the patch).

So, at this point, nothing jumps across the patch. I tried to read the source code at no avail. Does anyone know how to do this?

Thank you.
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Old   July 15, 2016, 04:17
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Ana Sofia Ribeiro
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Hi leejc,

I am trying to do something similar to this in a university project but so far without succeed.
I want to prescribe a jump on the velocity: to impose in the velocity field, at a certain streamwise position, a 2D vortex that looks like this:
https://www.dropbox.com/s/vdi2bi8p32...ortex.jpg?dl=0
So, I have for each cell the velocity jump I need to prescribe but i don't know which boundary condition to use (and how to use it). If you managed to do something similar before, can you give me any advice please?

Best regards,
Sofia
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