[AbdoMusaad]

Dear Foamers,
i have an application that i could not find a good example for on CFDonline.
i have a floating object that is allowed to move only in pitch with a lever arm from the center of rotation. and i would like to apply a torque around the center of rotation with an amplitude that is varying harmonically. I am wondering how to do that?



i am using openfoam v2312


I am thinking of using the restraints of sixDoFRigidBodyMotionCoeffs. but

these are the restraint types included in this openfoam version

linearAxialAngularSpring linearDamper linearSpring linearSpringDamper sixDoFRigidBodyMotionRestraint softWall sphericalAngularDamper sphericalAngularSpring tabulatedAxialAngularSpring



all of them are connected to implementing a spring or damper coefficients. So how can i use them to apply a force?

[AbdoMusaad]

i found the solution in this link:
Vary stiffness over time - sixDoFRigidBodyMotion


my implementation for openFoam v2312 is attached.