Abaqus Query

Hello,

 I am new to the FSI interaction module in abaqus, i wanted to know how to go for it, as i have modelled structure embedded in the soil domain using abaqus standard /explicit model and on which i have to model fluid striking the structure as well as the soil layer i have to use only Abaqus CFD model , iam not sure how could i model fluid in the CFD model what kind of interaction in between abaqus standard and abaqus cfd model and how could i make interaction, also how to install FSI module in abaqus cae?? it's knid of surge water striking structure!!

Thanks