Show all publications

Exploratory Free Standing Riser VIM Model Tests

AuthorsJaap de Wilde (MARIN)
Conference/Journal3rd International Workshop on Applied Offshore Hydrodynamics (IWAOH), Coppe/UFRJ - LabOceano, Rio de Janeiro
DateOct 1, 2007

An exploratory research model test campaign was undertaken to study the vortex induced motions for a range of current speeds between 0.16 and 3.3 m/s. The model was constructed at scale 1:68.75, with the vertical riser truncated at 375 m water depth. Two different weights of the vertical riser were considered. The tests were carried out in a large towing tank (8 m deep, 18 m wide and 240 m long), ensuring uniform flow conditions. Mode 1 response was observed for small current speeds, with a normal ”figure-of-eight” type trajectory of the air can. At higher speeds, the response became more complex with participation of higher modes and irregular wake-induced motions.

Contact

Contact person photo

Communications

Tags
stability, seakeeping and ocean engineeringwaves, impacts and hydrostructuralmeasurements and controldata sciencerenewablesoil and gasinfrastructuremarine systemslife at seamodel testingvortex induced motions (vim)vortex induced vibrations (viv)offshore engineering