Impact of the free surface proximity on the performance of a single Tidal Stream Turbine: A Vortex Filament Approach
File(s)
Published version
Author(s)
Deskos, G
Spinneken, J
Piggott, MD
Type
Conference Paper
Abstract
In the present work, a single Horizontal Axis Tidal Turbine (HATT) is placed in an infinite width
open-channel and is subject to a uniform free stream velocity. The Vortex Filament Method is used to model the
turbine loading and the wake behind it while the free surface deformation is modelled using a panel method
based on linear wave theory [1]. For the simulations presented here, an enhanced version of the mid-fidelity
open source code CACTUS is used. Results for the power coefficient ܥ are reported for a large number of Tip
Speed Ratios ߣ and for two above turbine clearance scenarios. The extracted results are compared with
experimental data [2] showing a good agreement for a broad range of ߣ
open-channel and is subject to a uniform free stream velocity. The Vortex Filament Method is used to model the
turbine loading and the wake behind it while the free surface deformation is modelled using a panel method
based on linear wave theory [1]. For the simulations presented here, an enhanced version of the mid-fidelity
open source code CACTUS is used. Results for the power coefficient ܥ are reported for a large number of Tip
Speed Ratios ߣ and for two above turbine clearance scenarios. The extracted results are compared with
experimental data [2] showing a good agreement for a broad range of ߣ
Date Issued
2016-03-21
Date Acceptance
2016-03-15
Copyright Statement
© the authors
Source
5th Oxford Tidal Energy Workshop
Start Date
2016-03-21
Finish Date
2016-03-22
Coverage Spatial
Oxford, UK