[SimulatorMaster]

Hello there people of the internet;

Recently I have started a project on F1 Car brake simulation. The geometry can be seen below. The red/orange color represents the air domain (the inlet and pressure outlets respectively) while those two things to the right of the main body, which is the disc, are the calipers that will apply friction the the disc.

The continua for the solids are:

• FSI-Fluid Structure Interaction
• Finite Element Solid Energy
• Solid Stress
• Implicit Unsteady...

The fluid, on the other hand, has coupled energy and flow is turbulent and constant density. So far no errors given on the models.

The disc in the middle will be rotating at 2000 RPM while the calipers will apply pressure gradually slowing down the rotation; however, I cannot assign different motions to the calipers and the disc. (I assigned the same rotational motion to the fluid not sure if necessary) The error can be seen below. Apparently both systems must be in the same motion yet that's something I do not want.

My interfaces are all mapped-contact interfaces created by imprinting and making contact mode interfaces. Not exactly sure what I should be doing.

That being said, do I need to assign rotation to the fluid region or can I leave it be with the mapped interface?