Semi-submersible platform free decay test setup stiffness etc.
 

Hello everyone.I am studying ocean engineering ,and now I have already known the platform's free decay period in sway,surge and yaw in the model test.
Now I want to use OpenFOAM for free decay test, I had set up four springs as binding forces, and I want to know if there is any way to get the value of anchor, stiffness, and restLength, and then let the platform do the free decay motion, and finally get the same natural period as the model test. .