Learning Forum

[nilshinzmann]

Hello everyone,

 

I have a problem with the coupling of a fluid in a steel structure.

 In simple terms, I have a cavity filled with a fluid. The fluid can be considered as incompressible. The steel body experiences a load (external pressure), which causes a deformation of the steel body. The deformation causes a stress change / pressure change in the fluid, which I want to know.

 What could be ways to solve this?

Remodel the fluid (without e-module) in engineering data? The steel body deforms elastically. For a static structural analysis I need elasticity.

or

a FSI in Fluent? What boundary conditions must be met for this? For example, there is no flow in the fluid.

 I am grateful for any help!!

Cheers

[peteroznewman]

Relevant discussions
/forum/discussion/21872/how-do-you-consider-the-properties-of-air-in-a-static-structural-simulation
/forum/discussion/13075/fluid-contained-within-a-structural-volume
/forum/discussion/3588/hydrostatic-fluid-element-in-structural-analysis-with-convex-geometry

[nilshinzmann]

Thank you Pete!
I created two geometries in SpaceClaim:
1.Solid (Steel) ÔÇô Main Body
2.Fluid (Water) - Cavity
Can I implement the property comment of a fluid (242) Workbench/Modell/Geometry? Right click on the specific geometry lets me insert an APDL Command window.

Cheers Nils

[peteroznewman]

You don't want a solid body for the water. Fluid elements are created by covering the inside of the cavity with surface elements and putting a single node inside the cavity to carry the pressure DOF.