Wind and Structures

  • 제36권2호
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  • Pages.75-90
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  • 2023
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  • 1226-6116(pISSN)
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  • 1598-6225(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Wind-sand tunnel experiment on the windblown sand transport and sedimentation over a two-dimensional sinusoidal hill

  • Lorenzo Raffaele (Department of Architecture and Design, Politecnico di Torino) ;
  • Gertjan Glabeke (Environmental and Applied Fluid Dynamics Department, von Karman Institute for Fluid Dynamics) ;
  • Jeroen van Beeck (Environmental and Applied Fluid Dynamics Department, von Karman Institute for Fluid Dynamics)
  • 투고 : 2022.07.29
  • 심사 : 2023.02.21
  • 발행 : 2023.02.25
⟨ 이전 논문 다음 논문 ⟩

초록

Turbulent wind flow over hilly terrains has been extensively investigated in the scientific literature and main findings have been included in technical standards. In particular, turbulent wind flow over nominally two-dimensional hills is often adopted as a benchmark to investigate wind turbine siting, estimate wind loading, and dispersion of particles transported by the wind, such as atmospheric pollutants, wind-driven rain, windblown snow. Windblown sand transport affects human-built structures and natural ecosystems in sandy desert and coastal regions, such as transport infrastructures and coastal sand dunes. Windblown sand transport taking place around any kind of obstacle is rarely in equilibrium conditions. As a result, the modelling of windblown sand transport over complex orographies is fundamental, even if seldomly investigated. In this study, the authors present a wind-sand tunnel test campaign carried out on a nominally two-dimensional sinusoidal hill. A first test is carried out on a flat sand fetch without any obstacle to assess sand transport in open field conditions. Then, a second test is carried out on the hill model to assess the sand flux overcoming the hill and the morphodynamic evolution of the sand sedimenting over its upwind slope. Finally, obtained results are condensed into a dimensionless parameter describing its sedimentation capability and compared with values resulting from other nominally two-dimensional obstacles from the literature.

키워드

과제정보

The study is part of the MSCA-IF-2019 research project Hybrid Performance Assessment of Sand Mitigation Measures (HyPer SMM, hypersmm.vki.ac.be). This project has received funding from the European Union's Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie grant agreement No 885985. The study has been jointly developed in the framework of the research project PROtection Technologies from Eolian Events for Coastal Territories (PROTEECT, www.proteect.polito.it). This project has received founding from Italian Ministry for University and Research (PON-FSE REACT-EU) and Politecnico di Torino. The experimental campaign has been developed in the framework of the Windblown Sand Modelling and Mitigation (WSMM, www.polito.it/WSMM) joint research, development and consulting group established between Politecnico di Torino and Optiflow Company.

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