Sorry, I meant one way 6DOF - ie the motion of the tank is dependent on the vessel, the tank sloshing doesn't alter the vessel motion. So you just need a motion profile from AQWA. Note, most FPSOs and bulk carriers don't pitch, heave or yaw that much unless in a storm, when we did a test case for a webinar I think we finished up with the equivalent to a rowing boat in a hurricane! That content is most likely lost now, but look for sloshing on ansys.com
VOF is good to track a coherent free surface. You can also have multispecies for each phase if needed. If you're expecting the free surface to break review multifluid VOF.Â
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