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Computational Fluid Dynamics and Visualisation of Coastal Flows in Tidal Channels Supporting Ocean Energy Development

Energies (Basel), 2015-06, Vol.8 (6), p.5997-6012 [Peer Reviewed Journal]

ISSN: 1996-1073 ;EISSN: 1996-1073 ;DOI: 10.3390/en8065997

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  • Title:
    Computational Fluid Dynamics and Visualisation of Coastal Flows in Tidal Channels Supporting Ocean Energy Development
  • Author: Zangiabadi, Enayatollah ; Edmunds, Matt ; Fairley, Iain ; Togneri, Michael ; Williams, Alison ; Masters, Ian ; Croft, Nick
  • Subjects: real bathymetry ; renewable energy ; tidal stream turbine ; turbulence
  • Is Part Of: Energies (Basel), 2015-06, Vol.8 (6), p.5997-6012
  • Description: Flow characteristics in coastal regions are strongly influenced by the topography of the seabed and understanding the fluid dynamics is necessary before installation of tidal stream turbines (TST). In this paper, the bathymetry of a potential TST deployment site is used in the development of the a CFD (Computational Fluid Dynamics) model. The steady state k-ϵ and transient Large Eddy Simulation (LES) turbulence methods are employed and compared. The simulations are conducted with a fixed representation of the ocean surface, i.e., a rigid lid representation. In the vicinity of Horse Rock a study of the pressure difference shows that the small change in height of the water column is negligible, providing confidence in the simulation results. The stream surface method employed to visualise the results has important inherent characteristics that can enhance the visual perception of complex flow structures. The results of all cases are compared with the flow data transect gathered by an Acoustic Doppler Current Profiler (ADCP). It has been understood that the k-ϵ method can predict the flow pattern relatively well near the main features of the domain and the LES model has the ability to simulate some important flow patterns caused by the bathymetry.
  • Publisher: MDPI AG
  • Language: English
  • Identifier: ISSN: 1996-1073
    EISSN: 1996-1073
    DOI: 10.3390/en8065997
  • Source: Freely Accessible Journals
    ROAD: Directory of Open Access Scholarly Resources
    ProQuest Central
    DOAJ Directory of Open Access Journals
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