Posters
Come meet the poster presenters to ask them questions and discuss their work
We would like to invite you to come and see the posters at our upcoming conference. The posters will showcase a diverse range of research topics, and will give delegates an opportunity to engage with the authors and learn more about their work. Whether you are a seasoned researcher or simply curious about the latest developments in your field, we believe that the posters will offer something of interest to everyone. So please join us at the conference and take advantage of this opportunity to learn and engage with your peers in industry and the academic community.
PO459: Impact of a Novel Flexible Serrated Trailing Edge in the Reduction of Far-Field Wind Turbine Noise Through Immission Point Measurements and Propagation Modelling
Ryan Church, Founder, Biome Renewables
Abstract
In this paper, we investigate the impact of a novel flexible serrated trailing edge device on the reduction of far-field broadband noise through reductions in sound energy in the low- to mid-frequency spectrum (< 1000 Hz) on a modern 6-MW class wind turbine. Immission point measurements at 700 m were carried out during consecutive years in the same season with the only change being the serration type on the turbine, starting first with a current saw-tooth serration (baseline period), and moving to a novel flexible serration (altered period). This technology is designed to target frequencies below 2 kHz, and especially in the range of 200-800 Hz. While IEC 61400-12-2:2024 (ed. 3) measurements demonstrated a delta SPL reduction of around 2dBA at 250m, measurements at the immission point at 700m showed reductions of 3.5 - 4 dBA. This increase in delta reduction is explained by the average reductions seen in the low frequency spectrum. Standard propagation modelling utilizing ISO 9613-2 standards gives further insights, especially when looking at the 1/3 frequency band distribution at 250m and 700m. An investigation into best practices within the framework of the current industry methodology follows.
No recording available for this poster.
