FSI: Form Union vs Assembly

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Hi,

I have an FSI problem with multiple elastic plates floating on the surface of a fluid. When FORM UNION is used, the model fails when there occur collision between plates. I have tried FORM ASSEMBLY, with "IDENTITY BOUNDARY PAIRS" at fluid-solid interface. But I cannot select the boundary to apply the multiphysics FLUID STRUCTURE INTERACTION.

Does this means that FORM ASSEMBLY can only be applied for FLUID STRUCTURE INTERACTION, PAIR ?

Thanks and regards, Dharma


1 Reply Last Post Nov 7, 2019, 6:47 AM EST
Henrik Sönnerlind COMSOL Employee

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Posted: 5 months ago Nov 7, 2019, 6:47 AM EST
Updated: 5 months ago Nov 7, 2019, 6:48 AM EST

Hi Dharma,

That is correct. If it is an assembly you should use Fluid-Structure Interaction, Pair.

Regards,
Henrik

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Henrik Sönnerlind
COMSOL
Hi Dharma, That is correct. If it is an assembly you should use Fluid-Structure Interaction, Pair. Regards, Henrik

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