Validation of the actuator line method for simulating flow through a horizontal axis tidal stream turbine by comparison with measurements

Journal article


Baba-Ahmadi, Mohammad H. and Dong, Ping 2017. Validation of the actuator line method for simulating flow through a horizontal axis tidal stream turbine by comparison with measurements. Renewable Energy. https://doi.org/10.1016/j.renene.2017.05.060
AuthorsBaba-Ahmadi, Mohammad H. and Dong, Ping
Abstract

The purpose of the present work is to evaluate the capability of the Actuator Line Method (ALM) to simulate flow through a horizontal axis tidal stream turbine. A numerical model combining the ALM with large eddy simulation technique is developed and applied to compute the flow past a laboratory-scale tidal stream turbine. The flow field is analysed in terms of streamwise mean velocity, turbulence intensity, turbulent kinetic energy and the decay rate of the maximum turbulent kinetic energy behind the turbine. It is found that the ALM performs well in predicting the mean flow and turbulence characteristics behind the turbine. The flow field predicted show a clear transition from an organised vorticity region near the turbine to a highly turbulent flow downstream. The location of this transition and the controlling parameters are discussed but further investigation, both numerical and experimental is required in order to clarify its effects on the flow structure and the performance of downstream turbines in tidal turbine arrays.

KeywordsTidal stream turbine; Actuator line modelling (ALM); Large eddy simulation (LES)
Year2017
JournalRenewable Energy
PublisherElsevier
ISSN0960-1481
Digital Object Identifier (DOI)https://doi.org/10.1016/j.renene.2017.05.060
Web address (URL)http://hdl.handle.net/10545/623214
hdl:10545/623214
Publication dates20 May 2017
Publication process dates
Deposited12 Dec 2018, 16:09
Accepted18 May 2017
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Archived with thanks to Renewable Energy

ContributorsUniversity of Dundee and University of Liverpool
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