Abstract
Wind-tunnel simulations of neutrally-stable atmospheric boundary-layer flow over an isolated, low hill (Askervein) have been carried out at three different length scales in two wind-tunnel facilities. The objectives of these simulations were to assess the reliability with which changes in mean wind and turbulence structure induced by the prototype hill on boundary-layer flow can be reproduced in the wind tunnel, and to determine the relative impact of certain modelling approaches (surface roughness, model scale, measurement techniques, etc.) on the quality of the simulations. The wind-tunnel results are compared with each other and with full-scale data and are shown in general to model the prototype flow very well. The effects of relaxing the criterion of aerodynamic roughness of the model surface were limited to certain regions in the lee of the hill and were linked to separation phenomena.
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Teunissen, H.W., Shokr, M.E., Bowen, A.J. et al. The Askervein Hill Project: Wind-tunnel simulations at three length scales. Boundary-Layer Meteorol 40, 1–29 (1987). https://doi.org/10.1007/BF00140067
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DOI: https://doi.org/10.1007/BF00140067