NDLI: Parabolised model of the turbulent wake behind marine turbines

Content Provider	IET Digital Library
Author	Fernandez, Arturo
Abstract	The extraction of hydrokinetic energy from ocean currents or tides involves the use of marine turbines generating turbulent wakes. The prediction of the wake characteristics is essential because the velocity deficit and increased levels in turbulence intensity dictate the interaction between turbines and any environment impact. A numerical methodology combining the parabolised Navier–Stokes equations with a modified actuator-disk model is presented. The main innovation of the modified actuator-disk model is that the flow is considered to be non-uniform downstream of the turbine. The numerical method is used to reproduce the experiments of Neary et al. (2013) and Mycek et al. (2014). The computational results show that the modification in the actuator-disk model aids in the reproduction of the experimental measurements. The simulations also show that increased levels in the ambient turbulence intensity cause a faster recovery in the turbulent wake, which agrees with experiments.
Starting Page	530
Ending Page	538
Page Count	9
ISSN	17521416
Volume Number	9
e-ISSN	17521424
Issue Number	Issue 5, Jul (2015)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-rpg/9/5
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-rpg.2014.0169
Journal	IET Renewable Power Generation
Publisher Date	2015-02-12
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Aerodynamics Ambient Turbulence Intensity Applied Fluid Mechanics Fluid Mechanics Hydraulic Turbines Hydroelectric Power Hydroelectric Power Stations And Plant Hydrokinetic Energy Marine Turbines Mechanical Engineering Modified Actuator-disk Model Navier-Stokes Equation Parabolised Model Parabolised Navier–Stokes Equations Power And Plant Engineering Tidal And Flow Energy Turbulence Turbulent Flows, Convection, And Heat Transfer Turbulent Wake Wakes
Content Type	Text
Resource Type	Article
Subject	Renewable Energy, Sustainability and the Environment

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