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Data from: Revisiting wind speed measurements using actively heated fiber optics: a wind tunnel study

posted on 21.08.2020, 10:35 authored by Justus Van Ramshorst, Miriam CoendersMiriam Coenders, Bart SchilperoortBart Schilperoort, B. J. H. (Bas) van de Wiel, Jonathan IzettJonathan Izett, J.S. (John) Selker, Chad W. Higgins, Hubert H.G. Savenije, N.C. (Nick) van de Giesen

Near-surface wind speed is typically only measured by point observations. The Actively Heated Fiber-Optic (AHFO) technique, however, has the potential to provide high-resolution distributed observations of wind speeds, allowing for better spatial characterization of fine-scale processes. Before AHFO can be widely used, its performance needs to be tested in a range of settings. In this work, experimental results on this novel observational wind-probing technique are presented. In a controlled wind-tunnel setup we assessed both the accuracy and the precision of AHFO under a range of operational conditions (wind speed, angles of attack and temperature difference). The technique allows for wind speed characterization with a spatial resolution of 0.3-m on a 1-s time scale. The flow in the wind tunnel was varied in a controlled manner, such that the mean wind, ranged between 1 and 17 ms-1. The AHFO measurements are compared to sonic anemometer measurements.


NWO Earth and Life Sciences, Veni project 863.15.022




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Corvallis, Oregon, USA




TU Delft, Faculty of Civil Engineering and Geosciences, Department of Water Management