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Fluid-Structure Interaction

Posted Mar 1, 2010, 2:20 p.m. EST 1 Reply

Dr. Yahya
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Hi all,
I’ve coupled 2 way fluid- structure interaction model and I have the simulation going very well accept at the boundary ends, What I miss?
Thanks in advance

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1 Reply Last Post Mar 2, 2010, 2:29 a.m. EST
Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)
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Posted: 1 decade ago Mar 2, 2010, 2:29 a.m. EST
Hi

for me your image looks like that you have applied "fixed" boundary displacement conditions on the two ends, which means "fixed"=no move, while probably you should have applied some sort of soft boundary, allowing the perifery circle to expand with the material elasticity conditions and just keep the symmetry axis fixed. This I believe applies to both ends.

Does this giveyou some clues ?

good luck
Ivar
Hi for me your image looks like that you have applied "fixed" boundary displacement conditions on the two ends, which means "fixed"=no move, while probably you should have applied some sort of soft boundary, allowing the perifery circle to expand with the material elasticity conditions and just keep the symmetry axis fixed. This I believe applies to both ends. Does this giveyou some clues ? good luck Ivar

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