TY - JOUR
T1 - The effect of building geometry on the size of aeolian deposition patterns
T2 - Scale model experiments at the beach
AU - Poppema, Daan W.
AU - Wijnberg, Kathelijne M.
AU - Mulder, Jan P.M.
AU - Vos, Sander E.
AU - Hulscher, Suzanne J.M.H.
N1 - Funding Information:
This research forms part of the ShoreScape project. The 5-week experiment at Noordwijk forms part of the larger Scanex experiment, organized by the CoastScan project. ShoreScape is funded by the Netherlands Organization for Scientific Research (NWO) , contract number ALWTW.2016.036 , co-funded by Hoogheemraadschap Hollands Noorderkwartier and Rijkswaterstaat , and in kind supported by Deltares , Witteveen&Bos , and H+N+S . CoastScan is also funded by NWO under project number 2018/STW/00505023 and focuses on coastal variability and resilience and the influence of natural and antropogenic factors on these properties. We also want to thank Rijkswaterstaat for the logistic support during the experiment at the Sand Motor, the municipality of Noordwijk for their support on the Scanex experiment, Vaclav Hornik of Windguru.cz for sharing wind data from Noordwijk and Christa van IJzendoorn for sharing grain size data from Noordwijk. Furthermore, we thank Jan Willem van Dokkum and Mieke Kuschnerus for their excellent help during the preparation and execution of the experiments. In addition, we are grateful to Janneke van Bergen, Paran Pourteimouri, Geert Campmans, Sara Dionísio António, Weiqiu Chen, Joost Kranenborg, Mariëlle Rotteveel, Sam de Roover, Ton van der Heide and the Oerol festival organization for their assistance with the experiments.
Funding Information:
This research forms part of the ShoreScape project. The 5-week experiment at Noordwijk forms part of the larger Scanex experiment, organized by the CoastScan project. ShoreScape is funded by the Netherlands Organization for Scientific Research (NWO), contract number ALWTW.2016.036, co-funded by Hoogheemraadschap Hollands Noorderkwartier and Rijkswaterstaat, and in kind supported by Deltares, Witteveen&Bos, and H+N+S. CoastScan is also funded by NWO under project number 2018/STW/00505023 and focuses on coastal variability and resilience and the influence of natural and antropogenic factors on these properties. We also want to thank Rijkswaterstaat for the logistic support during the experiment at the Sand Motor, the municipality of Noordwijk for their support on the Scanex experiment, Vaclav Hornik of Windguru.cz for sharing wind data from Noordwijk and Christa van IJzendoorn for sharing grain size data from Noordwijk. Furthermore, we thank Jan Willem van Dokkum and Mieke Kuschnerus for their excellent help during the preparation and execution of the experiments. In addition, we are grateful to Janneke van Bergen, Paran Pourteimouri, Geert Campmans, Sara Dion?sio Ant?nio, Weiqiu Chen, Joost Kranenborg, Mari?lle Rotteveel, Sam de Roover, Ton van der Heide and the Oerol festival organization for their assistance with the experiments.
Publisher Copyright:
© 2021 The Author(s)
PY - 2021/9/1
Y1 - 2021/9/1
N2 - In sandy environments, like the beach-dune system, buildings not only affect the airflow, but also the aeolian sediment transport in their surroundings. In this study, we determine how the horizontal size of sediment deposition patterns around buildings depends on the building's dimensions. Four one-day experiments were conducted at the beach using box-shaped scale models. We tested 32 building geometries, where scale model height, width and length ranged between 0.3 and 2.0 m. The deposition patterns were substantial in size: the total length and width of the deposition area were up to an order of magnitude larger than the horizontal building dimensions. It was found that the size of upwind and downwind deposition patterns depended more on the building width perpendicular to the wind direction (w), than on the building height (h). Building length had little influence. Especially the combined effect of w and h correlated well with horizontal deposition size. This is expressed in a new scaling length B for deposition around buildings, with . As a first validation, the spatial dimensions of the initial deposition patterns observed around a scale model of 2.5 × 12 × 2.5 m, placed at the beach for five weeks, showed good agreement with those predicted based on B.
AB - In sandy environments, like the beach-dune system, buildings not only affect the airflow, but also the aeolian sediment transport in their surroundings. In this study, we determine how the horizontal size of sediment deposition patterns around buildings depends on the building's dimensions. Four one-day experiments were conducted at the beach using box-shaped scale models. We tested 32 building geometries, where scale model height, width and length ranged between 0.3 and 2.0 m. The deposition patterns were substantial in size: the total length and width of the deposition area were up to an order of magnitude larger than the horizontal building dimensions. It was found that the size of upwind and downwind deposition patterns depended more on the building width perpendicular to the wind direction (w), than on the building height (h). Building length had little influence. Especially the combined effect of w and h correlated well with horizontal deposition size. This is expressed in a new scaling length B for deposition around buildings, with . As a first validation, the spatial dimensions of the initial deposition patterns observed around a scale model of 2.5 × 12 × 2.5 m, placed at the beach for five weeks, showed good agreement with those predicted based on B.
U2 - 10.1016/j.coastaleng.2021.103866
DO - 10.1016/j.coastaleng.2021.103866
M3 - Article
VL - 168
JO - Coastal engineering
JF - Coastal engineering
SN - 0378-3839
M1 - 103866
ER -