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Time varying non uniform velocity gradient, groovyBC?

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Old   October 30, 2012, 13:38
Default Time varying non uniform velocity gradient, groovyBC?
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Hi all,

As the title says, I have to impose a non uniform velocity gradient on a given patch that will vary for each iteration based on another variable. I searched a bit to find a similar boundary condition that I could modify to achieve what I want ... but didn't find anything interesting except "fixedFluxPressureFvPatchScalarField" which is still far from what I want.

I also read a bit about groovyBC (skaw4foam), but I'm still not convinced that it would be the best choice.

I'm certainly not the first one dealing with such a boundary condition..

What would you suggest ?
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Old   November 14, 2012, 18:26
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Quote:
Originally Posted by ic3wall View Post
Hi all,

As the title says, I have to impose a non uniform velocity gradient on a given patch that will vary for each iteration based on another variable. I searched a bit to find a similar boundary condition that I could modify to achieve what I want ... but didn't find anything interesting except "fixedFluxPressureFvPatchScalarField" which is still far from what I want.

I also read a bit about groovyBC (skaw4foam), but I'm still not convinced that it would be the best choice.

I'm certainly not the first one dealing with such a boundary condition..

What would you suggest ?
Define "best choice"

I think that you either program such a boundary condition yourself or use groovyBC. An intermediate solution would be codedFixedGradient, but last time I checked there was no such BC (and using other fields is way easier in groovyBC ... I think)
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