DYNAMICS OF MOORED FLOATING BODIES UNDER IRREGULAR WAVES
Luca Martinelli, luca.martinelli@unipd.it
Program:
Wave dynamics (8h): Bernoulli theorem (irrotational form). Airy theory: progressive
and evanescent solutions. Diffraction problem. Outline of finite amplitude wave
dynamics: steep wave and shallow water wave approaches. Wave irregularity.
Mooring system (4h): Catenary. Static and dynamic behaviour of chains. Snapping
conditions. Synthetic and metallic tethers. Umbilical. Dead body anchor.
Floating body dynamics (4h): 2DoF Problem of moored rigid body dynamics under
regular and irregular waves. Time and frequency-based approaches.
Numerical modelling (4h): Application of a solver of the linear diffraction problem to an
example case.
References:
Minutes of the lessons
Examination and grading:
Oral exam (2 questions randomly selected from a list of questions given at the end of
each lesson) or presentation of an exercise (numerical simulation of a simplified
floater)
Other course details:
The course aims at giving the basic knowledge of mooring cable dynamics for the
simulation of the motion of free and moored floating structures especially where the
wave force is of primary importance. A prerequisites is a basic knowledge of fluid
mechanics, rigid body dynamics, Fourier transforms, programming languages.
- Docente: Luca Martinelli