原文传递
Modeling Nonstationary Non-Gaussian Hurricane Wind Velocity and Gust Factor
| 题名： | Modeling Nonstationary Non-Gaussian Hurricane Wind Velocity and Gust Factor |
| 正文语种： | eng |
| 作者： | Xiao, M. Y.;Hong, H. P. |
| 作者单位： | Univ Western Ontario Dept Civil & Environm Engn London ON N6A 5B9 Canada;Univ Western Ontario Dept Civil & Environm Engn London ON N6A 5B9 Canada |
| 关键词： | Nonstationary wind;Simulation;S-transform (ST);Gust factor;Turbulence intensity |
| 摘要： | This study estimated the wind gust factor and turbulence intensity for hurricane winds that are modeled as a nonstationary non-Gaussian process. The estimation considered the time-varying mean wind velocity, and the time-frequency decomposition using S-transform characterized the time-varying amplitude and frequency content of the fluctuating wind. Winds simulated by applying a newly developed algorithm were used to augment the sample size. Results indicate that the standardized power spectral density function of hurricane winds can be represented in terms of the reduced frequency but with time-varying mean wind velocity. The standardized fluctuating wind is only weakly non-Gaussian; the average skewness and kurtosis coefficients are not very sensitive to whether the 10-or 60-min time-varying mean wind speed is considered. The assessed relation between the gust factor and turbulence intensity indicates that such a relationship is influenced by whether the instantaneous aspect of the nonstationary process is considered. There is large uncertainty in the developed relationship. By removing samples associated with a low mean wind velocity, the largest value of the estimated gust factor decreases. The consideration of the non-Gaussian aspect of the fluctuating wind to estimate the gust factor could be important as turbulence intensity increases. |
| 出版年： | 2022 |
| 期刊名称： | Journal of structural engineering |
| 卷： | 148 |
| 期： | 2 |
| 页码： | 04021263.1-04021263.16 |
相关文献
- Probabilistic Gust Factor Model of Typhoon Winds
- On the Gaussian and Non-Gaussian Characteristics of Nonstationary Seismic Ground Motions
- Effects of the Turbulence Integral Scale on the Non-Gaussian Properties and Extreme Wind Loads of Surface Pressure on a CAARC Model
- Multiobjective Equivalent Static Wind Loads on Complex Tall Buildings Using Non-Gaussian Peak Factors
- Data-Driven Approach for Generating Tricomponent Nonstationary Non-Gaussian Thunderstorm Wind Records Using Continuous Wavelet Transforms and S-Transform
- Comparative Study of the Wind Characteristics of a Strong Wind Event Based on Stationary and Nonstationary Models
检索历史
应用推荐
