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Possible bug in prescribedRotation restrain

Summary

Hello, I'm running the boatAndPropeller tutorial and the prescribed rotations assigned to the propeller and rudder don't seem to match what is defined in dynamicMeshDict. This seems to be linked to the prescribedRotation restrain.

Steps to reproduce

Run the boatAndPropeller tutorial with ./Allrun

What is the expected correct behavior?

My understanding is that the propeller should accelerate until reaching a constant speed, and the rudder angular speed should be a sine wave, according to the dynamicMeshDict file:

photo

Relevant logs and/or images

The angular velocities as calculated with v2006:

rud_ang_velocity pro_ang_velocity

Environment information

  • OpenFOAM version : v2006 (tested with v1912 and v2012 as well)
  • Operating system : Ubuntu
  • Hardware info : x86_64
  • Compiler : gcc 9.3.0

Possible fixes

My guess is that it could be the prescribedRotation restrain.

Thanks a lot.