set up in ansys fluent
 

hello everyone
I got those errors if someone can help me to understand and handle it.Attachment 98607

This is telling you that there is two fluid zones in contact that have different fluids. You will have to find the interface boundary condition between these and right click>type>wall to change it to a wall condition.

If you want two fluids to be in contact you will have to use a multiphase model.

set up in ansys
 

Thank you so much sir