Next Article in Journal
Demand Forecasting for a Mixed-Use Building Using Agent-Schedule Information with a Data-Driven Model
Previous Article in Journal
Evaluation and Improvement of the Sound Quality of a Diesel Engine Based on Tests and Simulations
Previous Article in Special Issue
A Modified Free Wake Vortex Ring Method for Horizontal-Axis Wind Turbines
Open AccessArticle

Aerodynamic Analysis of a Two-Bladed Vertical-Axis Wind Turbine Using a Coupled Unsteady RANS and Actuator Line Model

1
Institute for Energy Systems, School of Engineering, The University of Edinburgh, King’s Buildings, Edinburgh EH9 3BF, UK
2
Department of Engineering Science, University of Oxford, Parks Road, Oxford OX1 3PJ, UK
*
Author to whom correspondence should be addressed.
Energies 2020, 13(4), 776; https://doi.org/10.3390/en13040776
Received: 4 November 2019 / Revised: 24 January 2020 / Accepted: 8 February 2020 / Published: 11 February 2020
(This article belongs to the Special Issue Recent Advances in Aerodynamics of Wind Turbines)
Close-packed contra-rotating vertical-axis turbines have potential advantages in wind and hydrokinetic power generation. This paper describes the development of a numerical model of a vertical axis turbine with a torque-controlled system using an actuator line model (ALM). The developed model, coupled with the open-source OpenFOAM computational fluid dynamics (CFD) code, is used to examine the characteristics of turbulent flow behind a single two-bladed vertical-axis turbine (VAT). The flow field containing the turbine is simulated by solving the unsteady Reynolds-averaged Navier-Stokes (URANS) equations with a k - ω shear stress transport (SST) turbulence model. The numerical model is validated against experimental measurements from a two-bladed H-type wind turbine. Turbine loading is predicted, and the vorticity distribution is investigated in the vicinity of the turbine. Satisfactory overall agreement is obtained between numerical predictions and measured data on thrust coefficients. The model captures important three-dimensional flow features that contribute to wake recovery behind a vertical-axis turbine, which will be useful for future studies of close-packed rotors with a large number of blades. View Full-Text
Keywords: vertical-axis turbine; actuator line method; torque control; URANS; OpenFOAM; wind energy vertical-axis turbine; actuator line method; torque control; URANS; OpenFOAM; wind energy
Show Figures

Figure 1

MDPI and ACS Style

Zhao, R.; Creech, A.C.W.; Borthwick, A.G.L.; Venugopal, V.; Nishino, T. Aerodynamic Analysis of a Two-Bladed Vertical-Axis Wind Turbine Using a Coupled Unsteady RANS and Actuator Line Model. Energies 2020, 13, 776.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop