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The influence of turbulence model and two and three-dimensional domain selection on the simulated performance characteristics of vertical axis tidal turbines
Citation
Marsh, P and Ranmuthugala, D and Penesis, I and Thomas, G, The influence of turbulence model and two and three-dimensional domain selection on the simulated performance characteristics of vertical axis tidal turbines, Renewable Energy, 105 pp. 106-116. ISSN 0960-1481 (2017) [Refereed Article]
Copyright Statement
Copyright 2016 Elsevier Ltd.
DOI: doi:10.1016/j.renene.2016.11.063
Abstract
The influence of Computational Fluid Dynamics (CFD) modeling techniques on the accuracy of fixed pitch vertical axis turbine power output predictions was investigated. Using Two-Dimensional (2D) and Three-Dimensional (3D) models, as well as the Baseline-Reynolds Stress Model (BSL-RSM) and the k-ω Shear Stress Transport (k-ω SST) model in its fully turbulent and laminar-to-turbulent formulation, differences in power output modeling accuracy were evaluated against experimental results from literature. The highest correlation was found using a 3D domain model that fully resolved the boundary layer combined with the k-ω SST laminar-to-turbulent model. The turbulent 3D fully resolved boundary layer k-ω SST model also accurately predicted power output for most rotational rates, at a significantly reduced computational cost when compared to its laminar-to-turbulent formulation. The 3D fully resolved BSL-RSM model and 3D wall function boundary layer k-ω SST model were found to poorly simulate power output. Poor output predictions were also obtained using 2D domain k-ω SST models, as they were unable to account for blade tip and strut effects. The authors suggest that 3D domain fully turbulent k-ω SST models with fully resolved boundary layer meshes are used for predicting turbine power output given their accuracy and computational efficiency.
Item Details
| Item Type: | Refereed Article |
|---|---|
| Keywords: | tidal turbine, vertical axis turbine, computational fluid dynamics, turbulence model, computational domain, laminar-to-turbulent transition |
| Research Division: | Engineering |
| Research Group: | Maritime Engineering |
| Research Field: | Ocean Engineering |
| Objective Division: | Energy |
| Objective Group: | Renewable Energy |
| Objective Field: | Tidal Energy |
| Author: | Marsh, P (Mr Philip Marsh) |
| Author: | Ranmuthugala, D (Professor Dev Ranmuthugala) |
| Author: | Penesis, I (Associate Professor Irene Penesis) |
| ID Code: | 114809 |
| Year Published: | 2017 (online first 2016) |
| Web of Science® Times Cited: | 6 |
| Deposited By: | NC Maritime Engineering and Hydrodynamics |
| Deposited On: | 2017-02-28 |
| Last Modified: | 2017-11-02 |
| Downloads: | 0 |
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