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 the academic community. We look forward to seeing you there!
PO171: New CFD calibration methodology for wind resource assessment in highly forested area
Edouard Leonard, Senior Wind Engineer, Meteodyn
Abstract
More and more wind farms are developed in highly forested areas, due to favorable contexts (less restrictions and social opposition) and of course a lack of space. Because of the strong influence of forests on wind flow, wind farm developers are facing new challenges to obtain high accuracy on wind speed simulations. In this work, we present a new methodology that improves the simulation accuracy in forested areas based on forest model calibration. This approach, easily applicable, only requires wind profile measurements to determine the specific forest properties and calibrate the CFD forest model accordingly. It becomes especially interesting when high-precision roughness maps requiring advanced remote sensing imagery from lidar, satellite or plane are not available. This new forest calibration methodology is based on the wind speed profile measurement from a meteorological mast or a Lidar to adapt the CFD forest model on real forest properties (tree height, density of the forest…). The goal of this forest calibration is to choose the software parameters so that the wind profile simulated by the software is as close as possible to measurements. This approach also requires considering specific conditions to avoid thermal stability influence during the forest calibration phase. To check the validity of the forest calibration methodology, five sites have been investigated using the commercial software Meteodyn WT containing two met masts on each site, with common measurement periods and heights, and heterogeneous forest covering. The distance between both masts ranges from 500m to 7km. The bias analysis in cross-predictions shows significant improvements of the new calibration method leading to relative mean wind speed errors around 2.5 % even for a 40m - vertical extrapolation.
