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Turbulence Modeling for Accurate Wake Prediction in Tidal Turbine Arrays

Conference Paper

Title: Turbulence Modeling for Accurate Wake Prediction in Tidal Turbine Arrays
Author:
Shives, M.; Crawford, C.
Publication Date:
Event Name:
5th International Conference on Ocean Energy (ICOE 2014)
Pages:
12
Affiliation:
University of Victoria
Technology:
Current, Tidal
Collection Method:
Modeling
Engineering:
Array Effects, Hydrodynamics, Performance
Language:
English

Document Access

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Citation

Shives, M.; Crawford, C. (2014). Turbulence Modeling for Accurate Wake Prediction in Tidal Turbine Arrays. Paper presented at 5th International Conference on Ocean Energy (ICOE 2014)
@conference{Shives-2014-20130,
author = {Shives, M and Crawford, C},
title = {Turbulence Modeling for Accurate Wake Prediction in Tidal Turbine Arrays},
year = {2014},
month = {nov},
series = {5th International Conference on Ocean Energy (ICOE 2014)},
pages = {12},
url = {https://www.icoe-conference.com/publication/turbulence-modeling-for-accurate-wake-prediction-in-tidal-turbine-arrays/},
keywords = {Current, Tidal, Modeling, Array Effects, Hydrodynamics, Performance},
}
Export Citation to BibTex
TY - CONF
TI - Turbulence Modeling for Accurate Wake Prediction in Tidal Turbine Arrays
AU - Shives, M
AU - Crawford, C
T2 - 5th International Conference on Ocean Energy (ICOE 2014)
AB - 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.
DA - 2014/11//
PY - 2014
SP - 12
UR - https://www.icoe-conference.com/publication/turbulence-modeling-for-accurate-wake-prediction-in-tidal-turbine-arrays/
LA - English
KW - Current
KW - Tidal
KW - Modeling
KW - Array Effects
KW - Hydrodynamics
KW - Performance
ER -
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Abstract

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.