Flow-induced vibration with dynamic mesh
 

Hi everyone!

I study flow-induced vibration (FIV) in cylinders and I want to simulate a moving cylinder subject to crossflow in ANSYS Fluent as a translational movement. Experimentally it is conducted with springs, having a natural frequency and a spring constant. I have already read some documents in internet, but I am still not able to do this kind of simulation. I have some questions:

1) Should I use 6 DOF option in Dynamic Mesh tab or it is better to use a UDF to represent the motion? If it works better with UDF, can you give me some ideas?

2) Could you please give a step-by-step tutorial related directly to this problem?

3) I have already tried some cases:

3.1 I defined the cylinder wall as a rigid body and the fluid as deforming;

3.2 With an inner-domain surrounding the cylinder, with both set as rigid body but the inner-domain with passive option enabled in 6 DOF and an outer-domain as deforming. But it hasn't worked yet.

4) Should I use overset mesh, or it isn't necessary?

Thank you!!

Hello,

Were you able to find the answers to your question? I am kind of in the exact situation now.

Thanks