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Old   August 3, 2013, 03:10
Default LES rotating pipe swak4foam
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Simon Emhardt
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hi,

I am using pisoFOAM with LES turbulence model to simulate a fully turbulent pipe flow with Re=7000 based on the centreline velocity. (non-rotating pipe, mapping method)
The pipe is fully 3D and the dimensions are L=5D.
I initialised the field with some turbulence using perturbU.
after 10 flow through times it's fully developed.

now i want to write out the time dependent velocity profile and put it in as inlet condition when i start a new calculation with a rotating pipe.
i found some threads about swake4foam but couldn't figured it out.
i'm using openfoam-2.2.0.

any ideas how to put in the inlet a non-uniform time-dependent velocity profile?
thanks in advance

simon
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Old   August 3, 2013, 13:07
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Bernhard Gschaider
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Originally Posted by Gosi View Post
hi,

I am using pisoFOAM with LES turbulence model to simulate a fully turbulent pipe flow with Re=7000 based on the centreline velocity. (non-rotating pipe, mapping method)
The pipe is fully 3D and the dimensions are L=5D.
I initialised the field with some turbulence using perturbU.
after 10 flow through times it's fully developed.

now i want to write out the time dependent velocity profile and put it in as inlet condition when i start a new calculation with a rotating pipe.
i found some threads about swake4foam but couldn't figured it out.
i'm using openfoam-2.2.0.

any ideas how to put in the inlet a non-uniform time-dependent velocity profile?
thanks in advance

simon
swak currently only does lookup-tables by one variable (either time or another). But timeVaryingMappedFixedValue might be your friend.
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Old   August 6, 2013, 20:15
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Simon Emhardt
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Originally Posted by gschaider View Post
swak currently only does lookup-tables by one variable (either time or another). But timeVaryingMappedFixedValue might be your friend.
thanks a lot for your quick response. that's what i need.

simon
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