[Yogi_NA'03]

Hi everybody,
Nice to know you. I have a problem, I'm calculating forces on Airfoil (or hydrofoil) in a fluids. That airfoil attach on a spring and fixed to a boat. That airfoil and spring (or mechanism systems) had placed on boat fore.
The questions is :
1. How can I model the spring on ANSYS CFD?
2. How can I model a fluids with a characteristic of sea (sea state 1 -3)?
1. What is the best solutions to calculate and simulation it? is it ANSYS CFD or CFX?

Thank you for your help, I'm sorry if my language is bad.

regards,
yogi