Long-Term Mean Wind Profiles Based on Similarity Theory |
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| Authors: | Mark Kelly Sven-Erik Gryning |
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| Institution: | 1.Ris? National Laboratory for Sustainable Energy,Danish Technical University,Roskilde,Denmark |
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| Abstract: | We provide general forms for long-term mean wind profiles from similarity-based wind profiles, beginning with a probabilistic
adaptation of Monin–Obukhov similarity theory. We develop an analytical formulation for the stability distributions prevailing
in the atmospheric surface layer, which in turn facilitates the derivation of a long-term mean wind profile based on Monin–Obukhov
similarity theory. The modelled stability distributions exhibit good agreement with measurements from sites having different
local conditions. The long-term wind profile formulation is further extended to include the influence of the depth of the
atmospheric boundary layer (h), which becomes relevant for heights above h/3, and the resultant long-term ‘tall’ profile form also matches observations. |
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