Hello,
Have you checked the iCFD examples on sloshing?
https://www.dynaexamples.com/icfd
https://www.dynaexamples.com/icfd/basics-examples/global_imposed
https://www.dynaexamples.com/icfd/intermediate-examples/slosh2
There is also a course on iCFD on the Ansys Learning Hub (ALH):
https://jam8.sapjam.com/groups/QyHAlhciRCZ0Xt6xKZ2MHi/overview_page/jPMouxqQ2AOP6jVZLBMZCl
Reno.