Ocean Energy Systems

This website is sponsored by OES (Ocean Energy Systems); an intergovernmental collaboration between countries, which operates under framework established by the International Energy Agency (IEA).

The goals of this website is to store & present relevant information from ICOE conferences (documents, papers, presentations) and make it available in the future. Furthermore this website informs of upcoming ICOE conferences.

For more information about OES, click here >

 

Article Turbulence Modeling for Accurate Wake Prediction in Tidal Turbine Arrays
Author(s) M. Shives (ICOE 2014)
Tags Tidal, Turbulence, Turbine, Actuator disc, RANS
Type Papers
File michael-shives-turbulence-modeling-for-accurate-wake-prediction-in-tidal-turbine-arrays.pdf

This paper proposes to alter standard turbulence models in two ways. The first is to limit the eddy-viscosity in close proximity to the turbine rotor to reduce the initial mixing rate. The second is to add a source of turbulent kinetic energy in the near-wake to compensate for the fact that the actuator disk approach does not resolve the discrete vortices trailed from the rotor, therefore under-predicting the generation of turbulence that occurs when the vortices break-down. Comparing to two lab-scale experiments, these modifications showed significant improvement in predicting the wake recovery downstream of single turbines, and small arrays. 


Copyright (2020) OES
VOI Communication