A novel empirical model for vertical profiles of downburst horizontal wind speed
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 e...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2024-04-01
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| Series: | Wind Energy |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/we.2895 |
| _version_ | 1797261418186145792 |
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| author | Huixue Dang Guohua Xing Hailong Wang Dani Harmanto Weigang Yao |
| author_facet | Huixue Dang Guohua Xing Hailong Wang Dani Harmanto Weigang Yao |
| author_sort | Huixue Dang |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-04-24T23:40:54Z |
| format | Article |
| id | doaj.art-1af2f5ec3618422f972a27e33ea330de |
| institution | Directory Open Access Journal |
| issn | 1095-4244 1099-1824 |
| language | English |
| last_indexed | 2024-04-24T23:40:54Z |
| publishDate | 2024-04-01 |
| publisher | Wiley |
| record_format | Article |
| series | Wind Energy |
| spelling | doaj.art-1af2f5ec3618422f972a27e33ea330de2024-03-15T12:14:32ZengWileyWind Energy1095-42441099-18242024-04-0127440342410.1002/we.2895A novel empirical model for vertical profiles of downburst horizontal wind speedHuixue Dang0Guohua Xing1Hailong Wang2Dani Harmanto3Weigang Yao4School of Civil Engineering Chang'an University Xi'an 710061 ChinaSchool of Civil Engineering Chang'an University Xi'an 710061 ChinaSchool of Civil Engineering Chang'an University Xi'an 710061 ChinaFaculty of Computing, Engineering and Media De Montfort University Leicester LE1,9BH UKFaculty of Computing, Engineering and Media De Montfort University Leicester LE1,9BH UKAbstract 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.https://doi.org/10.1002/we.2895downburst windpiecewise functionturbulent boundary layervelocity profile |
| spellingShingle | Huixue Dang Guohua Xing Hailong Wang Dani Harmanto Weigang Yao A novel empirical model for vertical profiles of downburst horizontal wind speed Wind Energy downburst wind piecewise function turbulent boundary layer velocity profile |
| title | A novel empirical model for vertical profiles of downburst horizontal wind speed |
| title_full | A novel empirical model for vertical profiles of downburst horizontal wind speed |
| title_fullStr | A novel empirical model for vertical profiles of downburst horizontal wind speed |
| title_full_unstemmed | A novel empirical model for vertical profiles of downburst horizontal wind speed |
| title_short | A novel empirical model for vertical profiles of downburst horizontal wind speed |
| title_sort | novel empirical model for vertical profiles of downburst horizontal wind speed |
| topic | downburst wind piecewise function turbulent boundary layer velocity profile |
| url | https://doi.org/10.1002/we.2895 |
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