Implementation and validation of a potential model for a moored floating cylinder under waves
| Autor: | Giacomo Segurini, Adrià M. Moreno, Maria Gabriella Gaeta, Renata Archetti |
|---|---|
| Přispěvatelé: | Gaeta M.G., Segurini G., Moreno A.M., Archetti R. |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
020209 energy
Ocean Engineering 02 engineering and technology Wave flume experiments Hydrodynamic coefficient Physics::Fluid Dynamics lcsh:Oceanography lcsh:VM1-989 Catenary 0202 electrical engineering electronic engineering information engineering Calibration Cylinder lcsh:GC1-1581 Water Science and Technology Civil and Structural Engineering Added mass Mooring system Buoy Potential flow model lcsh:Naval architecture. Shipbuilding. Marine engineering 021001 nanoscience & nanotechnology Mooring Floating body Frequency domain hydrodynamic coefficients Potential flow 0210 nano-technology Geology Marine engineering |
| Zdroj: | Journal of Marine Science and Engineering, Vol 8, Iss 2, p 131 (2020) Journal of Marine Science and Engineering Volume 8 Issue 2 |
| Popis: | A three degrees-of-freedom model based on the potential flow theory was implemented to represent the motion of a slender cylindrical buoy under waves. The model calibration was performed by means of the comparison between the model results and the experiments performed at the Laboratory of Hydraulic Engineering of the University of Bologna (Italy). The dynamics of the floating cylinder, placed at the mid-section of the wave flume and anchored at the bottom through a mooring system of four catenaries, were obtained through videography analysis, providing surge, heave and pitch motions. The implementation of the mathematical model consisted of two main parts: The first has been developed in the frequency domain by applying NEMOH to assess the hydrodynamic coefficients of the object, i.e., the excitation, radiation and added mass coefficients then, the used mooring system was included in the time-domain model, solving the motion of the floating cylinder, by calibrating the mooring coefficients by comparing the results with the data. The simplicity of the implemented model is a very important feature, and it should be used as a preliminary study to understand the response of moored floating cylinders and others floating bodies under waves. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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