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Reduction methods in Coupled fluid-Structure Analysis

Reduction methods in Coupled fluid-Structure Analysis

Reduction methods in Coupled fluid-Structure Analysis

(OP)
Dear all,

I'm trying to calculate wet modes of a very large ship structure. In order to consider the influence of water in ship natural frequencies, I've modeled a portion of water around the hull, and I've tried to carry out a fluid-structure analysis. Since the ship FE model is very large, I've used a static reduction to solve the problem (ASET1). When I run the analysis using such reduction, the fluid is not coupled to the structure. Is it possible to carry out such coupled analysis using static reduction? If so, do I have to select master nodes in fluid too?

Thank you very much

Lorenzito

PS: I have already tried to solve the analysis using MFLUID and avoiding the explicit modelling of fluid, but I want to model the water around the hull for comparing the outcomes obtained in both methods.

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