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Measuring the local wind field at an escarpment using small remotely-piloted aircraft

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  • Wildmann, Norman
  • Bernard, Sarah
  • Bange, Jens

Abstract

A remotely-piloted aircraft (RPA) is used in this study to collect high resolution data of the flow in complex terrain at a potential site for a wind energy test field in Southern Germany. It is described how such a system was used to retrieve information about the flow field, turbulence intensity, vertical wind components and shear at an escarpment site that is known for its high wind potential. Measurements were done with the aircraft on several days with varying wind and weather conditions, while the focus of the study is on the characterisation of the flow field in main wind direction and neutral stratification. It is shown that flow inclination of up to 30° is found over the escarpment, but attenuates within a few hundred metres downstream. The formation of a reattached boundary layer could be measured, as well as an increased turbulence intensity in the reattachment zone. The results are highly valuable information for the planning of a wind energy test site at the location of the experiment and can also be used for the validation of numerical simulations and remote sensing instruments.

Suggested Citation

  • Wildmann, Norman & Bernard, Sarah & Bange, Jens, 2017. "Measuring the local wind field at an escarpment using small remotely-piloted aircraft," Renewable Energy, Elsevier, vol. 103(C), pages 613-619.
    • Handle: RePEc:eee:renene:v:103:y:2017:i:c:p:613-619
    DOI: 10.1016/j.renene.2016.10.073
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    Cited by:

    1. Asmae El Bahlouli & Alexander Rautenberg & Martin Schön & Kjell zum Berge & Jens Bange & Hermann Knaus, 2019. "Comparison of CFD Simulation to UAS Measurements for Wind Flows in Complex Terrain: Application to the WINSENT Test Site," Energies, MDPI, vol. 12(10), pages 1-21, May.
    2. Asmae El Bahlouli & Daniel Leukauf & Andreas Platis & Kjell zum Berge & Jens Bange & Hermann Knaus, 2020. "Validating CFD Predictions of Flow over an Escarpment Using Ground-Based and Airborne Measurement Devices," Energies, MDPI, vol. 13(18), pages 1-21, September.

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