Since r713, it is possible to define a Moving Reference Frame (MRF) attached to the mesh. Equations are solved with the MRF velocities. External forces are modeled according to the MRF definition.
The MRF definition is done with a specific BLOCK:MRF
definition.
The current MRF type are
BLOCK:MRF
NAME = my_rotation ! optional
TYPE = ROTATION
CENTER = ( 5., 2., 0.) ! default is ( 0., 0., 0.)
AXIS = ( 0., 0., 1.) ! default
OMEGA_RPM = 600. ! 600 round per minute ~ 62.8 rad/s
ENDBLOCK
BLOCK:MRF
NAME = my_rotation ! optional
TYPE = OSCILLATING_ROTATION
CENTER = ( 5., 2., 0.) ! default is ( 0., 0., 0.)
AXIS = ( 0., 0., 1.) ! default
OMEGA_RPM = 600. ! 600 round per minute ~ 62.8 rad/s (default is 0)
OSC_ANGLE = 10. ! max angle deviation (degree)
OSC_PERIOD = .01 ! oscillating period (second)
ENDBLOCK