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fluid orce to solid patch icofsifoam

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Old   February 9, 2020, 13:25
Default fluid orce to solid patch icofsifoam
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xena
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Hello,

My question is about the fluid force applied on the solid patch in icodymfoam, what we find in setMotion.H, is juste pressure, !! Is the correct force implemented elsewhere ?

regards
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Old   February 9, 2020, 15:03
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The Q is a bit broad, isn't it?
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Old   February 10, 2020, 03:47
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Originally Posted by HPE View Post
The Q is a bit broad, isn't it?
ok sorry, i will explain it better.
at the fluid-structure interface, we have as BC the equality of constraints (file attached). But when I checked in setpressure.H of icodymfoam it looks like this :

{
scalarField solidPatchPressure =
interpolatorFluidSolid.faceInterpolate
(
p.boundaryField()[fluidPatchID]
);

solidPatchPressure *= rho;


tForce.pressure() = solidPatchPressure;


vector totalPressureForce =
sum
(
p.boundaryField()[fluidPatchID]*
mesh.Sf().boundaryField()[fluidPatchID]
);
}


So there isn't the part of the force due to the velocity and the viscosity.

Am I rignt, or is it done elswhere in the code.

Regards
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Old   February 18, 2020, 17:37
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Oh yeah, I think so.

I think what you are looking for is an active research topic, thats why it is not available thereat or somewhere else I think.
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Old   February 24, 2020, 09:54
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Philip Cardiff
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Hi,

As noted previously, the icoFsiFoam solver only passes pressure to the solid and ignores viscous stresses e.g. see other threads:
Fluid Structure Interaction using icoFsiFoam Problems

You can try later FSI solvers that include both e.g. extend-bazaar and solids4foam.

Philip
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Old   February 24, 2020, 10:52
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Quote:
Originally Posted by bigphil View Post
Hi,

As noted previously, the icoFsiFoam solver only passes pressure to the solid and ignores viscous stresses e.g. see other threads:
Fluid Structure Interaction using icoFsiFoam Problems

You can try later FSI solvers that include both e.g. extend-bazaar and solids4foam.

Philip

Thanks,

Is it possible to add it to the current code?
I made some changes, so I want to continue using icofsifoam for the time being!

Regards
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Old   February 24, 2020, 15:10
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Hi xena,

You can find steps on the thread in my previous post.

Philip
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