FSI: advection of sphere by viscous drag

Official adapters and tutorials
1

Hi Im new to this forum.

I’ve been using OpenFOAM for a few years and FSI have been attracted my attention all the time.

At the moment I would like to simulate the movement of a sphere inside a tube or channel, or even open flow (air). Initially the sphere is rigid, but eventually I would like to set some mechanical properties and study sphere deformation due to flow or contact with walls.

If you are aware of any tutorial I can do to start Id be very grateful for your help. I have some experience in FEA (ansys) but I have installed calculix and dealii as well and Im doing some tuts.

Cheers
Fran

2

Welcome @Fran :wave:

I recommend to start with the quickstart case:

https://precice.org/quickstart.html

And then probably the perpendicular flap:

https://precice.org/tutorials-perpendicular-flap.html

Already a word of advice about the sphere case you want to do: the current OpenFOAM adapter uses a moving mesh (interface capturing) approach. You will not be able to move the sphere tooo much.

3

Hi Ben

thanks for your reply!

I have started with the tutorials, thank you.

Do you mean with current FV FE methods it is not possible to simulate Rigid (or Deformable) Body Movement of a solid due to advection?

4

No, in principle this is possible, but if you move your sphere from the very left to the very right of your channel, your mesh will get too distorted.