Study of a Bi-Vertical Axis Turbines Farm Using the Actuator Cylinder Method

Vertical axis turbines, which extract kinetic energy from currents, can produce electricity independently from a current’s direction. Hence, this type of turbines raises interest for harvesting energy from tidal currents, where flow changes direction during flood and ebb tides, and where currents pr...

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Bibliographic Details
Published in:Energies (Basel) 2021-08, Vol.14 (16), p.5199
Main Authors: Jégo, Laurie, Guillou, Sylvain
Format: Article
Language:English
Subjects:
actuator cylinder
Actuators
Alternating current
Arrays
Computational fluid dynamics
Computing time
Cylinders
Ebb tides
Electric power generation
Electricity
Energy
Energy harvesting
Engineering Sciences
Flow velocity
Kinetic energy
Mechanics
Methods
Ocean currents
Physics
renewable marine energy
Rotors
Simulation
Tidal currents
tidal parcs
Turbines
Velocity distribution
vertical axis tidal turbine
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Summary:Vertical axis turbines, which extract kinetic energy from currents, can produce electricity independently from a current’s direction. Hence, this type of turbines raises interest for harvesting energy from tidal currents, where flow changes direction during flood and ebb tides, and where currents present large variation of direction during tide. Methods for representing vertical axis turbines in tidal farms should be implemented in order to predict correctly power production with an acceptable time cost. The Actuator Cylinder (AC) is one of them. Numerical results in terms of wakes, with the study of velocity profiles, and efforts are compared to experiences, as well as showed that the method is sufficiently accurate and for a reasonable computing time, which is of prime importance for tidal turbines farms studies. The Actuator Cylinder method is implemented in ANSYS Fluent in a 2D stationary resolution. The method is then applied to a double levels of two counter-rotating rotors marine turbine designed by Hydroquest. Wake and power production of a single turbine and several farm configurations are studied under different current conditions (magnitude and direction).
ISSN:1996-1073
1996-1073
DOI:10.3390/en14165199