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A novel empirical model for vertical profiles of downburst horizontal wind speed
A novel empirical model for vertical profiles of downburst horizontal wind speed
- Source :
- Wind Energy, Vol 27, Iss 4, Pp 403-424 (2024)
- Publication Year :
- 2024
- Publisher :
- Wiley, 2024.
-
Abstract
- Abstract This study proposes an empirical model for preliminary wind‐resist design of downburst flow. Existing empirical models were compared with field data and found to underpredict horizontal wind speed below the height corresponding to the maximum radial velocity, due to the neglect of viscous effects and the evolution of vertical wind profiles along radial direction. To address these deficiencies, semi‐empirical piecewise functions including wall shear effects in the local turbulent boundary layer and interpolation functions were proposed to improve the accuracy of existing models. The wind profile based on Coles' theory was found to agree well with field data, with the parabola interpolation function being the most desirable. Using the proposed method, the vertical profile of horizontal wind speed at different local radial locations can be predicted for wind resist design given the inlet wind speed of the downburst flow. Overall, this model improves upon existing empirical models and allows for more accurate wind‐resist design.
Details
- Language :
- English
- ISSN :
- 10991824 and 10954244
- Volume :
- 27
- Issue :
- 4
- Database :
- Directory of Open Access Journals
- Journal :
- Wind Energy
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.1af2f5ec3618422f972a27e33ea330de
- Document Type :
- article
- Full Text :
- https://doi.org/10.1002/we.2895