Mathematical Analysis of the Wind Field Characteristics at a Towering Peak Protruding out of a Steep Mountainside DOI Creative Commons
Mohammed Nabil,

Fengqi Guo,

Huan Li

et al.

Mathematics, Journal Year: 2024, Volume and Issue: 12(10), P. 1535 - 1535

Published: May 15, 2024

Wind field characteristics in a complex topography are significantly influenced by the nature of surrounding terrains. This study employs onsite measurements to investigate wind at towering peak protruding out steep mountainside, where butterfly−lookalike landscape platform will be constructed; impact on flow is highlighted. The results showed that blocking effect mountains mountainous side valley caused significant drop mean speed from direction. stationary test (reverse arrangement test) indicated had strong nonstationary characteristic, necessitating employment steady and model assess turbulence characteristics. three directions’ integral scales were critically occurrence speedup effect, unexpectedly resulting vertical scale being greatest three. Furthermore, measured properties under both models certain variations recommended specifications. Consequently, local terrain must thoroughly evaluated ensure structural stability structures installed similar topography.

Language: Английский

Intelligent evaluation of interference effects between tall buildings based on wind tunnel experiments and explainable machine learning DOI
Kun Wang, Jinlong Liu, Yong Quan

et al.

Journal of Building Engineering, Journal Year: 2024, Volume and Issue: 96, P. 110449 - 110449

Published: Aug. 13, 2024

Language: Английский

Citations

3
Study on Fluctuating Wind Characteristics and Non-Stationarity at U-Shaped Canyon Bridge Site DOI Creative Commons
Zhe Sun, Zhong Zou, Jiaying Wang

et al.

Applied Sciences, Journal Year: 2025, Volume and Issue: 15(3), P. 1482 - 1482

Published: Jan. 31, 2025

To investigate the non-stationary characteristics of wind field at U-shaped canyon bridge site and its impact on fluctuating characteristics, a observation tower was installed near cable-stayed bridge. The Augmented Dickey–Fuller (ADF) test employed to assess stationarity speed series, while discrete wavelet transform (DWT) applied reconstruct time-varying mean analyze effect characteristics. Results indicate that speeds in this region exhibit bimodal distribution with Weibull-Gamma mixed model providing best fit. proportion samples increases height. Autocorrelation function (ACF), partial autocorrelation (PACF) tests, power spectral density (PSD) analysis determined optimal decomposition level for region. Analysis using db10 reconstruction reveals stationary overestimates turbulence intensity but underestimates integral scale. downwind spectrum deviates from Kaimal both low- high-frequency bands, whereas vertical aligns well Panofsky spectrum. findings demonstrate method more accurately captures under complex terrain conditions area.

Language: Английский

Citations

0
Spatiotemporal evolution of wind field dynamics and turbulence mechanisms in complex terrain forested areas: A multi-source collaborative observational study DOI

Jiawei He,

Hongfu Zhang,

Daocheng Zhou

et al.

Physics of Fluids, Journal Year: 2025, Volume and Issue: 37(5)

Published: May 1, 2025

The wind field in forested areas is strongly influenced by complex terrain and dense vegetation cover, resulting substantial spatial heterogeneity temporal variability characteristics. These factors are critical to the safety of transportation infrastructure efficiency energy development areas. However, systematic observational studies such environments remain limited. This study comprehensively analyzed spatiotemporal evolution speed, direction, turbulence characteristics based on long-term data obtained from a flux tower light detection ranging at Mao'er Mountain Forest Ecosystem National Field Science Observation Research Station. vertical distribution speed its seasonal variation were also examined. results show that probability density function intensity follows lognormal with fitting accuracy improving height. Significant discrepancies identified between observed values recommended current standards. In summer, gust factor exhibited greater increasing was generally higher than winter similar altitudes. Moreover, von Kármán spectrum showed best agreement measured power spectra longitudinal, lateral, directions, outperforming Simiu Panofsky models. findings enhance understanding dynamics provide valuable scientific basis for disaster risk assessment, wind-resistant design, strategic planning resources mountainous

Language: Английский

Citations

0
Mathematical Analysis of the Wind Field Characteristics at a Towering Peak Protruding out of a Steep Mountainside DOI Creative Commons
Mohammed Nabil,

Fengqi Guo,

Huan Li

et al.

Mathematics, Journal Year: 2024, Volume and Issue: 12(10), P. 1535 - 1535

Published: May 15, 2024

Wind field characteristics in a complex topography are significantly influenced by the nature of surrounding terrains. This study employs onsite measurements to investigate wind at towering peak protruding out steep mountainside, where butterfly−lookalike landscape platform will be constructed; impact on flow is highlighted. The results showed that blocking effect mountains mountainous side valley caused significant drop mean speed from direction. stationary test (reverse arrangement test) indicated had strong nonstationary characteristic, necessitating employment steady and model assess turbulence characteristics. three directions’ integral scales were critically occurrence speedup effect, unexpectedly resulting vertical scale being greatest three. Furthermore, measured properties under both models certain variations recommended specifications. Consequently, local terrain must thoroughly evaluated ensure structural stability structures installed similar topography.

Language: Английский

Citations

0