Numerical Investigation of the Flow Features Around Heave Plates Oscillating Close to a Free Surface or Seabed (Contributo in atti di convegno)

Type
Label
  • Numerical Investigation of the Flow Features Around Heave Plates Oscillating Close to a Free Surface or Seabed (Contributo in atti di convegno) (literal)
Anno
  • 2014-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1115/OMAE2014-23818 (literal)
Alternative label
  • Carlos A. Garrido-Mendoza (1), K. P. Thiagarajan(2) , Antonio Souto-Iglesias (1), Benjamin Bouscasse (3) and Andrea Colagrossi (3) (2014)
    Numerical Investigation of the Flow Features Around Heave Plates Oscillating Close to a Free Surface or Seabed
    in ASME 2014 33rd International Conference on Ocean, Offshore and Arctic Engineering (OMAE)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Carlos A. Garrido-Mendoza (1), K. P. Thiagarajan(2) , Antonio Souto-Iglesias (1), Benjamin Bouscasse (3) and Andrea Colagrossi (3) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://proceedings.asmedigitalcollection.asme.org/proceeding.aspx?articleid=1911984 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#titoloVolume
  • ASME 2014 33rd International Conference on Ocean, Offshore and Arctic Engineering (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#volumeInCollana
  • Volume 7: Ocean Space Utilization; Professor Emeritus J. Randolph Paulling Honoring Symposium on Ocean Technology (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • (1) CEHINAV, Naval Architecture Department (ETSIN), Technical University of Madrid (UPM), (2) Department of Mechanical Engineering, University of Maine, 04469 Orono, ME. (3) CNR-INSEAN (literal)
Titolo
  • Numerical Investigation of the Flow Features Around Heave Plates Oscillating Close to a Free Surface or Seabed (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#isbn
  • 978-0-7918-4549-3 (literal)
Abstract
  • Performance of heave plates used in offshore structures is strongly influenced by their added mass and damping, which are affected by proximity to a boundary. A previous paper by the au- thors presented numerical simulations of the flow around a circu- lar solid disk oscillating at varying elevations from seabed [1]. The force calculated was used to evaluate the added mass and damping coefficients for the disk. The simulations suggest that as the structure moves closer to the seabed the added mass and damping coefficients (C a and C b ) increases continuously. In or- der to understand the physics behind the added mass and damp- ing trends, when a heave plate is moving near a seabed or closer to the free surface, the flow characteristics around the heave plate are examined numerically in this paper. Flow around os- cillating disks is dominated by generation and development of phase-dependent vortical structures, characterized by the KC number and the distance from the seabed or free surface to the heave plate. Numerical calculations presented in this paper have comprised the qualitative analysis of the vortex shedding and the investigation of the links between such vortex shedding and, on one hand the damping coefficient, and on the other hand, pairing mechanisms such as the shedding angle. (literal)
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