Experimental and Numerical Icing Penalties of an S826 Airfoil at Low Reynolds Numbers

Autor: Richard Hann, R. Jason Hearst, Lars Roar Sætran, Tania Bracchi

Publikováno v: Aerospace, Vol 7, Iss 4, p 46 (2020)

Most icing research focuses on the high Reynolds number regime and manned aviation. Information on icing at low Reynolds numbers, as it is encountered by wind turbines and unmanned aerial vehicles, is less available, and few experimental datasets exi

Externí odkaz: https://doaj.org/article/38952f4afb3541989f718cf92e1262d3

Flow field and performance of a vertical-axis wind turbine on model buildings

Autor: Yannick Jooss, Roberto Bolis, Tania Bracchi, R. Jason Hearst

Publikováno v: Flow

The placement of a scaled-down Savonius (drag) vertical-axis wind turbine on model buildings is analysed experimentally by the use of turbine performance and flow field measurements in a wind tunnel. The set-up consists of two surface mounted cubes a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::daa0640992e723f6c90c20ffe5a046c7
https://doi.org/10.1017/flo.2022.3

Spatial development of a turbulent boundary layer subjected to freestream turbulence

Autor: Yannick Jooss, R. Jason Hearst, Tania Bracchi, Leon Li

Publikováno v: Journal of Fluid Mechanics

The spatial development of a turbulent boundary layer (TBL) subjected to freestream turbulence (FST) is investigated experimentally in a water channel for friction Reynolds numbers up to Reτ=5060. Four different FST intensities are generated with an

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fb88dc2623f0da3f0e2b59c9a803d39e
https://doi.org/10.1017/jfm.2020.967

Taking the Motion out of Floating Lidar: Turbulence Intensity Estimates with a Continuous-Wave Wind Lidar

Autor: Vegar Neshaug, Felix Kelberlau, Tania Bracchi, Jakob Mann, Lasse Lønseth

Publikováno v: Remote Sensing, Vol 12, Iss 5, p 898 (2020)
Remote Sensing; Volume 12; Issue 5; Pages: 898
Kelberlau, F, Neshaug, V, Lønseth, L, Bracchi, T & Mann, J 2020, ' Taking the motion out of floating lidar: Turbulence intensity estimates with a continuous-wave wind lidar ', Remote Sensing, vol. 12, no. 5, 898 . https://doi.org/10.3390/rs12050898

Due to their motion, floating wind lidars overestimate turbulence intensity ( T I ) compared to fixed lidars. We show how the motion of a floating continuous-wave velocity−azimuth display (VAD) scanning lidar in all six degrees of freedom influence

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eb7d7c110e35ca6f581c3d08ec38714c
https://www.mdpi.com/2072-4292/12/5/898

Performance of the NREL S826 airfoil at low to moderate Reynolds numbers — A reference experiment for CFD models

Autor: Kristian Forfot Sagmo, Lars Roar Sætran, Jan Michael Simon Bartl, Tania Bracchi

Lift, drag and surface pressure measurements are performed on a wing section of the NREL S826 wind turbine airfoil at eight Reynolds numbers ranging from 0 . 5 × 1 0 5 to 6 . 0 × 1 0 5 . Alongside with the measurements two types of Reynolds average

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::22a69a5c3f741fbc5a516507e0296539
http://hdl.handle.net/11250/2588842