Reply To: Added mass effect on natural frequencies

[Erik Kostson]

 

Hi

There is no easy way (so without modelling the water domain) to do this as this complex.

Best and most common way for this is to use the modal acoustic analysis system as that will account for the fluid added mass.

One needs to model the water inside and outside the pipe and structural pipe as a 3D solid (not as a surface body/ meshed with shell elements).

Many posts on this if you search.

https://innovationspace.ansys.com/forum/forums/topic/structure-added-mass-vibration/

Best wishes

Erik