General Mechanical

General Mechanical

Adding a fluid into static structural analysis

    • nilshinzmann
      Subscriber

      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
      Subscriber
    • nilshinzmann
      Subscriber
      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
      Subscriber
      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.
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