Learning Forum

[Hilal Çelik]

  I modeled one pontoon with tlp connection as seen in the figure.

but I have encountered that error: CATXIZ:AVERAGE WEIGHT/BUOYANCY TOO SMALL. I try to solve, change the mass of the pontoon but it didn't work.

[Hilal Çelik]

now the older error is gone but I have met this error : CLAYES:*** SYS LOG ERR *** WTLAYD(NC) /=TOTALW. I adjust the equivalent area and mass/length according to suggestions in "Mooring issue in AQWA" but they didn't work.

[Mike Pettit]

Hello,

It looks like you are using Nonlinear Catenary Cables to model your tension legs, but this cable type is not really designed for that purpose (the Aqwa solver expects a catenary shape). You could either simplify the problem by using any other (linear or nonlinear) cable type; or you could replace the cables with Tether/Riser connections, which use a finite element method to estimate the tether loads and dynamic behaviour.

I hope this helps!

Mike