A comparison between CFD simulations and experiments for predicting the far wake of horizontal axis tidal turbines
A comparison between CFD simulations and experiments for predicting the far wake of horizontal axis tidal turbines
Actuator discs may be used as a simple method for simulating horizontal axis tidal turbines, both in experiments and
CFD models. They produce a similar far wake to a real turbine, but eliminate some of the scaling issues which occur
in experiments, and reduce the mesh density required in CFD simulations. This paper examines methods for applying
a simple actuator disc in a commercial CFD code, Ansys CFX, and compares the wake produced with experimental
results for similar values of disk thrust coefficient (CT ). The results show that the CFD model gives reasonable
agreement with the experimental results. The main factors affecting the wake structure are the initial CT value, the
ambient turbulence levels, and potentially the disc induced turbulence. The main differences between the models and
experiments were in terms of the turbulence levels throughout the model. With further development, it is considered
that the CFD actuator disc could be an accurate and validated method for numerically modelling tidal turbines
cfd, tidal current, turbine, wake
Harrison, M.E.
553f4973-0237-422c-8656-72e3a249f0dc
Batten, W.M.J.
8a6a68c7-b614-4f62-9d56-54eb38a45a94
Myers, L.E.
b0462700-3740-4f03-a336-dc5dd1969228
Bahaj, A.S.
a64074cc-2b6e-43df-adac-a8437e7f1b37
2009
Harrison, M.E.
553f4973-0237-422c-8656-72e3a249f0dc
Batten, W.M.J.
8a6a68c7-b614-4f62-9d56-54eb38a45a94
Myers, L.E.
b0462700-3740-4f03-a336-dc5dd1969228
Bahaj, A.S.
a64074cc-2b6e-43df-adac-a8437e7f1b37
Harrison, M.E., Batten, W.M.J., Myers, L.E. and Bahaj, A.S.
(2009)
A comparison between CFD simulations and experiments for predicting the far wake of horizontal axis tidal turbines.
8th European Wave and Tidal Energy Conference, Uppsala, Sweden.
06 - 09 Sep 2009.
Record type:
Conference or Workshop Item
(Paper)
Abstract
Actuator discs may be used as a simple method for simulating horizontal axis tidal turbines, both in experiments and
CFD models. They produce a similar far wake to a real turbine, but eliminate some of the scaling issues which occur
in experiments, and reduce the mesh density required in CFD simulations. This paper examines methods for applying
a simple actuator disc in a commercial CFD code, Ansys CFX, and compares the wake produced with experimental
results for similar values of disk thrust coefficient (CT ). The results show that the CFD model gives reasonable
agreement with the experimental results. The main factors affecting the wake structure are the initial CT value, the
ambient turbulence levels, and potentially the disc induced turbulence. The main differences between the models and
experiments were in terms of the turbulence levels throughout the model. With further development, it is considered
that the CFD actuator disc could be an accurate and validated method for numerically modelling tidal turbines
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More information
Published date: 2009
Venue - Dates:
8th European Wave and Tidal Energy Conference, Uppsala, Sweden, 2009-09-06 - 2009-09-09
Keywords:
cfd, tidal current, turbine, wake
Identifiers
Local EPrints ID: 73773
URI: http://eprints.soton.ac.uk/id/eprint/73773
PURE UUID: 97ba1254-4807-492b-8e0a-48f34b0d71b2
Catalogue record
Date deposited: 16 Mar 2010
Last modified: 11 Dec 2021 03:45
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Contributors
Author:
M.E. Harrison
Author:
W.M.J. Batten
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