InfIuence of wave induced second-order forces in semisubmersible fowt mooring design

López Pavón, Carlos; Watai, Rafael A.; Ruggeri, Felipe; Simos, Alexandre N. y Souto Iglesias, Antonio (2013). InfIuence of wave induced second-order forces in semisubmersible fowt mooring design. En: "32nd International Conference on Ocean, Offshore and Arctic Engineering (OMAE 2013)", 09/06/2013 - 14/06/2013, Nantes, France. pp. 1-11.

Descripción

Título: InfIuence of wave induced second-order forces in semisubmersible fowt mooring design
Autor/es:
  • López Pavón, Carlos
  • Watai, Rafael A.
  • Ruggeri, Felipe
  • Simos, Alexandre N.
  • Souto Iglesias, Antonio
Tipo de Documento: Ponencia en Congreso o Jornada (Artículo)
Título del Evento: 32nd International Conference on Ocean, Offshore and Arctic Engineering (OMAE 2013)
Fechas del Evento: 09/06/2013 - 14/06/2013
Lugar del Evento: Nantes, France
Título del Libro: Proceedings of the ASME 2013
Fecha: 2013
Materias:
Palabras Clave Informales: Floating offshore wind turbine (FOWT), semisubmersible, mooring design, slow-drift forces, captive model tests, bichromatic waves
Escuela: E.T.S.I. Navales (UPM)
Departamento: Enseñanzas Básicas de la Ingeniería Naval [hasta 2014]
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

The main focus of this paper is on hydrodynamic modelling of a semisubmersible platform (which can support a 1.5MW wind turbine and is composed by three buoyant columns connected by bracings) with especial emphasis on the estimation of the wave drift components and their effects on the design of the mooring system. Indeed, with natural periods of drift around 60 seconds, accurate computation of the low-frequency second-order components is not a straightforward task. As methods usually adopted when dealing with the slow-drifts of deep-water moored systems, such as Newman?s approximation, have their errors increased by the relatively low resonant periods, and as the effects of depth cannot be ignored, the wave diffraction analysis must be based on full Quadratic Transfer Functions (QTF) computations. A discussion on the numerical aspects of performing such computations is presented, making use of the second-order module available with the seakeeping software WAMIT®. Finally, the paper also provides a preliminary verification of the accuracy of the numerical predictions based on the results obtained in a series of model tests with the structure fixed in bichromatic waves.

Más información

ID de Registro: 25778
Identificador DC: http://oa.upm.es/25778/
Identificador OAI: oai:oa.upm.es:25778
Depositado por: Memoria Investigacion
Depositado el: 16 May 2015 07:44
Ultima Modificación: 16 May 2015 07:44
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