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Memorias de investigación
Communications at congresses:
Numerical Investigation of the Flow Features around Heave Plates Oscillating Close to a Free Surface or Seabed
Year:2014
Research Areas
  • Mechanical aeronautics and naval engineering
Information
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 authors presented numerical simulations of the flow around a circular 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 (Ca and Cb) increases continuously. In order to understand the physics behind the added mass and damping 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 oscillating 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.
International
Si
Congress
ASME 2014 33rd International Conference on Ocean, Offshore and Arctic Engineering
960
Place
San Francisco, California, USA
Reviewers
Si
ISBN/ISSN
978-0-7918-4549-3
doi:10.1115/OMAE2014-23818
Start Date
08/06/2014
End Date
13/06/2014
From page
1
To page
11
Volume 7: Ocean Space Utilization; Professor Emeritus J. Randolph Paulling Honoring Symposium on Ocean Technology
Participants
  • Autor: Carlos Ariel Garrido Mendoza (UPM)
  • Autor: Antonio Souto Iglesias (UPM)
  • Autor: Andrea Colagrossi (INCEAN)
  • Autor: Benjamin Bouscasse (INCEAN)
  • Autor: Krish Thiagarajan (University of Maine)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: CEHINAV (Canal de Ensayos Hidrodinámicos de la E.T.S.I. Navales)
  • Departamento: Mecánica de Fluidos y Propulsión Aeroespacial
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