 Experimental investigation of tip-speed-ratio influence on horizontal-axis wind turbine wake dynamicsPaul Bayron, Richard Kelso and Rey Chin Renewable Energy, 2024, vol. 225, issue C Abstract: Wind tunnel experiments were performed to study the influence of tip speed ratio, TSR or λ, on the spatial evolution of mean velocity, turbulence intensity, energy spectrum and integral length scale in the wake of a small-scale horizontal axis wind turbine model. Three TSR conditions, λ=5.6, λ=6.5 and λ=8.5 were tested and measured at various streamwise locations from 1 to 11 rotor diameters (D) from the rotor plane using constant temperature hotwire anemometry. Findings from the experiments show that the magnitudes of the velocity and turbulence within the wake, along with the uniformity of their distributions, are influenced by the TSR due to the increased interaction of the rotor wake and the nacelle-tower wake. Furthermore, the turbine operated at λ=8.5 has the overall lowest streamwise velocity deficit and the lowest maximum turbulence intensity in the far wake compared with the lower TSR cases. The increased turbulence within the near wake has likely promoted more mixing leading to a faster wake recovery. Keywords: Hotwire anemometry; Wake dynamics; Wind tunnel experiment; Wind turbine (search for similar items in EconPapers) Downloads: (external link) Related works: Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:225:y:2024:i:c:s0960148124002660 DOI: 10.1016/j.renene.2024.120201 Access Statistics for this article Renewable Energy is currently edited by Soteris A. Kalogirou and Paul Christodoulides More articles in Renewable Energy from Elsevier |
Is your work missing from RePEc? Here is how to contribute.
Questions or problems? Check the EconPapers FAQ or send mail to .
EconPapers is hosted by the
School of Business at Örebro University.