Next Article in Journal
Non-Negligible Lag of Groundwater Infiltration Recharge: A Case in Mu Us Sandy Land, China
Next Article in Special Issue
A Study on the Motion of Partial Air Cushion Support Catamaran in Regular Head Waves
Previous Article in Journal
Use of Nanoparticles for the Disinfection of Desalinated Water
Previous Article in Special Issue
Numerical Simulation of 2-D Solitary Wave Run-Up over Various Slopes Using a Particle-Based Method
Article Menu
Issue 3 (March) cover image

Export Article

Open AccessArticle

Comparison of Actuator Line Method and Full Rotor Geometry Simulations of the Wake Field of a Tidal Stream Turbine

1
Key Laboratory of Coastal Disaster and Defence (Hohai University), Ministry of Education, Nanjing 210024, China
2
College of Harbor, Coastal and Offshore Engineering, Hohai University, Nanjing 210024, China
3
College of Energy and Electrical Engineering, Hohai University, Nanjing 210024, China
4
College of Civil and Transportation Engineering, Hohai University, Nanjing 210024, China
*
Authors to whom correspondence should be addressed.
Water 2019, 11(3), 560; https://doi.org/10.3390/w11030560
Received: 14 January 2019 / Revised: 12 March 2019 / Accepted: 13 March 2019 / Published: 18 March 2019
  |  
PDF [8201 KB, uploaded 19 March 2019]
  |  

Abstract

This study aims to investigate the wake characteristics of a horizontal axis tidal stream turbine supported by a monopile using a numerical approach. Computational fluid dynamics (CFD) simulations based on the open source software OpenFOAM have been performed to enhance understanding of a turbine’s wake. The numerical simulations adopt both the actuator line method and the full rotor geometry method. The numerical results are found to be consistent with experimental data, although some discrepancies are observed at a distance of one rotor diameter downstream. Comparison of numerical results from both methods is performed. The results show that both methods can obtain important flow features and provide similar simulation in the wake of the turbine model. The actuator line method is able to give a better prediction in stream-wise velocity distribution, although it underestimates the turbulence intensity, circumferential velocity and vorticity magnitude slightly, compared with the full rotor geometry method. It is also found that the wake of the monopile and the rotor interact strongly in the downstream field, especially in the region immediately behind the structure. A strong interaction occurs within approximately two rotor diameters downstream. View Full-Text
Keywords: OpenFOAM; tidal stream turbine; actuator line method; full rotor geometry simulation; wake field OpenFOAM; tidal stream turbine; actuator line method; full rotor geometry simulation; wake field
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Lin, X.-F.; Zhang, J.-S.; Zhang, Y.-Q.; Zhang, J.; Liu, S. Comparison of Actuator Line Method and Full Rotor Geometry Simulations of the Wake Field of a Tidal Stream Turbine. Water 2019, 11, 560.

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.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Water EISSN 2073-4441 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top