Abstract
Wind characteristics at complex mountainous areas are of great practical importance, which, however, has not been fully understood. The main objective of this study is to present a comprehensive assessment of hilly terrain wind characteristics using both Computational Fluid Dynamics (CFD) method and wind tunnel test. The results indicate that hilly-terrain wind characteristics exhibit pronounced site-to-site variability. The speed-up effect at mountain top and the passing terrain can be somewhat weakened by the existence of front mountain, whereas the wind speed reduction near the mountain foots is enhanced due to the shielding effect. The effect of inflow wind direction on the hilly terrain wind characteristics is also found to be evident.
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