FPSOs - Shallow Water Hydrodynamics

[sy123]

Has anyone did any work in FPSO design in shallow waters. I have a couple of questions if anyone is interested to help me out.

1) How does wave excitation forces vary when we get in shallow water from deepwater.

2) What changes do we need to take into account for Linear Water wave theory while calculating wave loads on FPSOs or other large water plane area vessels ( Cb > 0.9)

I have a few more questions, if anyone could shed some light on the above, then we could discuss more.


Best Regards,
SY

 

[billsumner]

You need to use better wave theories than Airy (linear). Try Dean's stream functions or even Cnoidal theory. But nothing models breaking waves very well.

The Ursell number helps select the appropriate theory.