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

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    Ahmadi&Dong_2017a.pdf
    Embargo:
    2019-05-20
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    Authors
    Baba-Ahmadi, Mohammad H.
    Dong, Ping
    Affiliation
    University of Dundee
    University of Liverpool
    Issue Date
    2017-05-20
    
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    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.
    Citation
    Baba-Ahmadi, M.H., and Dong, P. (2017) ‘Validation of the actuator line method for simulating flow through a horizontal axis tidal stream turbine by comparison with measurements’, Renewable Energy, 113, pp. 420-427. doi: 10.1016/j.renene.2017.05.060.
    Publisher
    Elsevier
    Journal
    Renewable Energy
    URI
    http://hdl.handle.net/10545/623214
    DOI
    10.1016/j.renene.2017.05.060
    Additional Links
    https://linkinghub.elsevier.com/retrieve/pii/S0960148117304469
    Type
    Article
    Language
    en
    ISSN
    0960-1481
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.renene.2017.05.060
    Scopus Count
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    Department of Mechanical Engineering & the Built Environment

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