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bulk modulus in fluid Structure Interaction

Experimenter
Experimenter

Is in Fluid Structure Coupling Analysis , fluid is assumed to be incompressible/Compressible . If compressible  why we give bulk modulus K for analysis?

 

 

2 REPLIES

Re: bulk modulus in fluid Structure Interaction

Siemens Genius Siemens Genius
Siemens Genius

If you are doing acoustic analysis, fluid is compressible and hence bulk modulus is needed. If you are adding mass effects using MFLUID, compressibility is not taken into account.

 

NX Nastran user's guide has a section on fluid-structure interaction. This guide will give you more details.


Thanks

Re: bulk modulus in fluid Structure Interaction

Experimenter
Experimenter

Thank you so much for the input