Journal of Wind Engineering and Industrial Aerodynamics最新文献

{"title":"Full-scale monitoring of a telecommunication lattice tower under synoptic and thunderstorm winds","authors":"Ileana Calotescu ,&nbsp;Daniel Bîtcă ,&nbsp;Maria Pia Repetto","doi":"10.1016/j.jweia.2025.106022","DOIUrl":"10.1016/j.jweia.2025.106022","url":null,"abstract":"<div><div>This paper presents a full-scale monitoring system installed on a 50 m tall telecommunication lattice tower located in Sânnicolau Mare, Romania. The system has the dual purpose of measuring wind velocity and the wind-induced response of the tower, with particular attention to thunderstorms. It includes an ultrasonic anemometer, a temperature sensor, two triaxial accelerometers, six strain gauges and a video camera system. A first set of data recorded between January 2021 and December 2022 is analyzed in order to compare the dominant properties of thunderstorm and synoptic wind records and reveal the corresponding structural response. An improved approach to wind characterization based on anemometric and video data is proposed to separate the wind records into depressions and thunderstorms, highlighting the innovative use of video sequence to support classification of events. Anemometric and video data related to detected depressions and thunderstorms are presented, together with their full statistical characterizations. Wind induced structural response due to depression and thunderstorm records are described in terms of acceleration and strain. Patterns of depression and thunderstorm-induced response are presented, with the aim of emphasizing their diversity and complementing the identification of thunderstorms. Correlation of simultaneous wind velocity and structural response records is finally analyzed.</div></div>","PeriodicalId":54752,"journal":{"name":"Journal of Wind Engineering and Industrial Aerodynamics","volume":"258 ","pages":"Article 106022"},"PeriodicalIF":4.2,"publicationDate":"2025-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143303646","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Aerodynamics of a 5:1 rectangular cylinder under transient accelerated and decelerated winds","authors":"Qiang Zhou ,&nbsp;Shuyang Cao ,&nbsp;Md Mahbub Alam ,&nbsp;Bing Han","doi":"10.1016/j.jweia.2025.106023","DOIUrl":"10.1016/j.jweia.2025.106023","url":null,"abstract":"<div><div>The present study investigates the aerodynamic characteristics of a 5:1 rectangular cylinder subjected to transient accelerated and decelerated winds, utilizing synchronized pressure measurements in an actively controlled wind tunnel. This research addresses the limitations of existing wind-resistant design codes, which primarily consider synoptic winds, by focusing on the effects of non-synoptic winds. The results show that accelerating and decelerating winds significantly impact cylinder surface pressure, shear-layer reattachment position, spanwise cross-correlation of fluctuating pressure, and aerodynamic forces, with accelerating winds having a more pronounced effect than decelerating winds. Furthermore, the shear-layer reattachment position shifts upstream with increased wind acceleration or deceleration, resulting in a shorter separation bubble. Both accelerating and decelerating winds enhance fluctuating pressures, their spanwise correlations, flow two-dimensionality, and aerodynamic forces. Fluctuations in drag and lift coefficients exhibit an almost linear relationship with wind acceleration or deceleration.</div></div>","PeriodicalId":54752,"journal":{"name":"Journal of Wind Engineering and Industrial Aerodynamics","volume":"258 ","pages":"Article 106023"},"PeriodicalIF":4.2,"publicationDate":"2025-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143354053","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects of turbulence on vortex-excited coupled vehicle-bridge systems: Wind tunnel investigation","authors":"Hao-Yang Li ,&nbsp;You-Lin Xu ,&nbsp;Ming-Shui Li ,&nbsp;Le-Dong Zhu","doi":"10.1016/j.jweia.2025.106020","DOIUrl":"10.1016/j.jweia.2025.106020","url":null,"abstract":"<div><div>An accurate assessment of driving comfort and safety of road vehicles on a long-span bridge subjected to vortex-induced vibration (VIV) is crucial for bridge managers to decide whether the bridge should be closed to traffic or not. However, the previous studies often overlook the effects of turbulence on coupled vehicle and bridge systems subjected to VIV although turbulence does exist on site. In this study, vortex-excited coupled truck-bridge deck models were tested in a big wind tunnel under smooth and turbulence flows. Vortex-induced response (VIR) and vortex-induced force (VIF) of the bridge deck and the aerodynamic forces on the truck were measured simultaneously. The effects of the turbulence on VIR and VIF of the bridge deck with the truck(s) placed on different lanes were explored. The effects of turbulence on the mean and peak aerodynamic forces as well as acceleration response of the truck on the vortex-excited bridge deck were also investigated. The results show that VIR and VIF of the bridge deck are significantly influenced by turbulence intensities and truck locations. The mean and peak aerodynamic forces as well as acceleration response of the truck also vary significantly with turbulence intensities and truck locations.</div></div>","PeriodicalId":54752,"journal":{"name":"Journal of Wind Engineering and Industrial Aerodynamics","volume":"258 ","pages":"Article 106020"},"PeriodicalIF":4.2,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143167359","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Flow mechanism of a vibrating prism using the combined K-nearest neighbor and dynamic mode decomposition method","authors":"Zengshun Chen ,&nbsp;Likai Zhang ,&nbsp;Yujie Wu ,&nbsp;Tengda Guan ,&nbsp;Yuhao Ma ,&nbsp;Yemeng Xu ,&nbsp;Sunwei Li ,&nbsp;Ke Li ,&nbsp;Qian Wang","doi":"10.1016/j.jweia.2025.106013","DOIUrl":"10.1016/j.jweia.2025.106013","url":null,"abstract":"<div><div>This study proposes a novel hybrid method, K-nearest neighbor and dynamic mode decomposition (KNN-DMD), for capturing modes of vibrating prisms in the flow field. To validate the effectiveness of the proposed KNN-DMD, the velocity field under structural vibration amplitudes with 0%, 10% and 18% is obtained using large eddy simulation. KNN-DMD is utilized to identify dominant features of the flow field around the prism, such as low-frequency mode, the primary vortex shedding mode, second harmonic mode, and forced vibration mode. The low-frequency mode is associated with fluctuations in the incoming turbulent flow. The primary vortex shedding manifests as the periodic shedding of vortices in the wake region, revealing the dynamics of the shear layer and the process of shedding in the Kármán vortex street. The second harmonic mode, which is a higher-order form of the Kármán vortex street, supplements smaller-scale vortex structures and enriches the vortex characteristics. The forced vibration mode, reflecting the range and intensity of the vibration effect, forms shear layers that propagate to both sides and exhibit an alternate shedding phenomenon. The KNN-DMD reveals the structural modal forms in fluid dynamics more comprehensively and facilitates future research on the fluid-solid interaction and nonlinear stochastic systems.</div></div>","PeriodicalId":54752,"journal":{"name":"Journal of Wind Engineering and Industrial Aerodynamics","volume":"258 ","pages":"Article 106013"},"PeriodicalIF":4.2,"publicationDate":"2025-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143166804","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Numerical investigation of the influence of street length and building configurations on ventilation and pollutant dispersion in idealized street canyons","authors":"Namrata Mishra ,&nbsp;Aditya Kumar Patra ,&nbsp;Abhishek Penchala ,&nbsp;Samrat Santra","doi":"10.1016/j.jweia.2025.106016","DOIUrl":"10.1016/j.jweia.2025.106016","url":null,"abstract":"<div><div>The paper investigates the influence of street length on ventilation and dispersion of traffic-induced pollutants in urban street canyons, an aspect often overlooked in previous studies. Employing computational fluid dynamics (CFD), the research explores airflow and pollutant dispersion in symmetric, step-up, and step-down canyons across different aspect ratios (AR = 1 and 3) and street lengths (L), ranging from 2 to 20 times the street width (W). The results indicate that pollutant concentration increases with street length in symmetric and step-up canyons, whereas it decreases in step-down canyons for L &gt; 10W. High-rise (AR = 3) step-down canyons exhibit higher pollutant levels compared to their low-rise (AR = 1) counterparts, while step-up canyons exhibit the opposite trend. In symmetric canyons with L/W ≤ 5, low-rise configurations have nearly double the pollutant concentration of high-rise canyons, but this relationship reverses for L/W &gt; 5. Ventilation is more effective at street ends than at the canyon roof, with turbulent velocity components dominating over mean velocity in driving air exchange. Higher L/W ratios correlate with reduced air exchange rates, signifying decreased ventilation efficiency as street length increases. These findings offer critical insights for enhancing urban air quality through optimized street canyon design.</div></div>","PeriodicalId":54752,"journal":{"name":"Journal of Wind Engineering and Industrial Aerodynamics","volume":"257 ","pages":"Article 106016"},"PeriodicalIF":4.2,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143102836","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Field-based investigation of snow-drift flux increases in blowing snow and application to mapping of short-term visibility reduction using mesoscale meteorological simulation","authors":"Tsubasa Okaze ,&nbsp;Risa Kawashima ,&nbsp;Takeru Ito ,&nbsp;Satoshi Omiya ,&nbsp;Hirofumi Niiya ,&nbsp;Kouichi Nishimura","doi":"10.1016/j.jweia.2024.105989","DOIUrl":"10.1016/j.jweia.2024.105989","url":null,"abstract":"<div><div>Blowing snow, driven by strong winds, significantly reduces visibility and poses a serious threat to winter road safety in snowy regions. To address this issue, this study aimed to investigate the short-term fluctuations in snow-drift flux caused by turbulent wind gusts, which can lead to rapid visibility reductions. We conducted field observations in a snowfield located on the east side of Hokkaido, Japan, to analyze the relationships between 10-min mean wind speed, 10-min mean snow-drift flux, and the maximum 1-min mean snow-drift flux during the same period. Using these relationships, we demonstrated visibility maps with mesoscale meteorological simulation as an application. Our results indicated that the 10-min mean snow-drift flux at 1.0 m height under a wind speed of 20 m/s was two orders of magnitude larger than that at a wind speed of 10 m/s. Additionally, the maximum 1-min snow-drift flux was approximately three times larger than the 10-min mean value. Thus, the estimated minimum 1-min mean visibility showed approximately half of the 10-min mean visibility. These findings provide valuable insights into the spatial distribution of visibility reduction, which could be instrumental in improving road safety measures and guiding drivers to select appropriate routes during blowing snow conditions.</div></div>","PeriodicalId":54752,"journal":{"name":"Journal of Wind Engineering and Industrial Aerodynamics","volume":"257 ","pages":"Article 105989"},"PeriodicalIF":4.2,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143102858","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mean and maximum two dimensional wind force on an open-grown tree","authors":"Nikolas Angelou ,&nbsp;Barry Gardiner ,&nbsp;Ebba Dellwik","doi":"10.1016/j.jweia.2024.105966","DOIUrl":"10.1016/j.jweia.2024.105966","url":null,"abstract":"<div><div>The accurate quantification of the wind loading on trees is crucial for estimating the risk of tree damage. Here, we present an experimental quantification of the wind force on a rural, open-grown, deciduous tree. We first demonstrate that the amplitude and direction of the two-dimensional force vector can be estimated using two strain gauges mounted on the bottom of the stem. Secondly, we show that the dynamic response of the tree along the mean wind direction shows differences from that in the transverse direction, indicating the importance of studying both force components. Subsequently, the analysis is focused on the mean and maximum wind force over a wide wind speed range. During winter, both the mean and maximum force is described by a quadratic wind speed dependence, whereas during summer, an adjustment is needed to account for the reconfiguration of the leaves. This adjustment is parameterized using the same functional relationship for the mean and maximum force. Overall, in the wind speed range between 4–11 ms⁻¹ the maximum wind load was 49%–66% and 52%–79% larger than the mean, during the summer and winter, respectively.</div></div>","PeriodicalId":54752,"journal":{"name":"Journal of Wind Engineering and Industrial Aerodynamics","volume":"257 ","pages":"Article 105966"},"PeriodicalIF":4.2,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143099133","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Disparities in aeolian sand transport across low and high wind speeds in the atmospheric surface layer","authors":"Guowen Han,&nbsp;Zhilin Huang,&nbsp;Xiaobin Zhang,&nbsp;Guowei Xin","doi":"10.1016/j.jweia.2024.105990","DOIUrl":"10.1016/j.jweia.2024.105990","url":null,"abstract":"<div><div>Synchronously measured high-frequency wind speeds and saltation mass flux data were used to investigate the wind-blown sand transport dynamics across low and high wind speeds in the atmospheric surface layer. Our study reveals that the probability density functions (PDFs) of non-zero values of saltation mass flux follow an exponential distribution at relatively low wind speeds (<em>u</em>_<em>τ</em> &lt; 0.35 m s⁻¹). However, these PDFs shift to a lognormal distribution at relatively high wind speeds (<em>u</em>_<em>τ</em> &gt; 0.45 m s⁻¹). Additionally, the response of saltation mass flux to turbulent motions varies with wind speed. For example, sweep turbulent events contribute 55% to the total saltation mass flux at low wind speeds, whereas they contribute 45% at high wind speeds. Furthermore, Bagnold's formula, Kawamura's formula, and the formula developed by Martin and Kok are effective at high wind speeds. However, due to the intermittency of aeolian sand transport at low wind speeds, these formulas are invalid. We employed the condition-averaged saltation sand transport rate (<em>Q</em>_<em>c</em>) to investigate the scaling laws of saltation sand transport rates. Compared to the time-averaged saltation sand transport rate used in previous studies, <em>Q</em>_<em>c</em> values align more closely with the formula developed by Martin and Kok.</div></div>","PeriodicalId":54752,"journal":{"name":"Journal of Wind Engineering and Industrial Aerodynamics","volume":"257 ","pages":"Article 105990"},"PeriodicalIF":4.2,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143103324","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A novel AR-MEM-PJTM method for simulating multivariate stationary non-Gaussian wind pressure processes","authors":"Fengbo Wu ,&nbsp;Yuan Hu ,&nbsp;Yi Lu ,&nbsp;Xingui Yao ,&nbsp;Jingzhou Xin ,&nbsp;Yan Jiang","doi":"10.1016/j.jweia.2024.105999","DOIUrl":"10.1016/j.jweia.2024.105999","url":null,"abstract":"<div><div>It is generally accepted that the wind-induced response time domain analysis for nonlinear structures requires accurate and fast simulation of non-Gaussian wind pressures. Recently, an enhanced autoregressive (AR)-based method for simulating univariate wind pressures has been proposed by some authors of this study. However, the corresponding method for simulating multivariate wind pressures is missing. This study comprehensively uses AR, maximum entropy method (MEM), piecewise Johnson transformation model (PJTM) and proposes a novel AR-MEM-PJTM method for simulating multivariate non-Gaussian wind pressures. In this method, a set of closed-form formulations for estimating higher-order moments of the AR's input process vector are firstly theoretically derived. Next, MEM is used to approximate the marginal probability distribution function of the input process vector, which is then applied to determine PJTM. The proposed AR-MEM-PJTM method is illustrated in the numerical examples to be capable of considering more moments, thus result in satisfactory simulations for a variety of multivariate non-Gaussian wind pressures. It is also pointed out that the proposed method is not restricted by the application range, which actually exists in the conventional methods using AR model. Note that the proposed method can also be applied to simulate other non-Gaussian processes such as the wind speed.</div></div>","PeriodicalId":54752,"journal":{"name":"Journal of Wind Engineering and Industrial Aerodynamics","volume":"257 ","pages":"Article 105999"},"PeriodicalIF":4.2,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143099129","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Performance-based wind design of tall mass timber buildings with coupled post-tensioned cross-laminated timber shear walls","authors":"Nahom K. Berile,&nbsp;Matiyas A. Bezabeh","doi":"10.1016/j.jweia.2024.105981","DOIUrl":"10.1016/j.jweia.2024.105981","url":null,"abstract":"<div><div>Engineered timber panels, such as cross-laminated timber (CLT), have enabled tall mass timber buildings to reach heights equivalent to mid-rise concrete and steel buildings. Tall mass timber buildings are lighter and more flexible than their concrete and steel equivalents, which makes their design wind-critical. The current prescriptive code-based design of main wind force resisting systems (MWFRSs) only considers buildings’ linear-elastic capacity, resulting in costly designs requiring commercially unavailable timber cross sections. This prevents engineers from fully utilizing timber as MWFRS and limits the height that mass timber buildings can reach. In performance-based wind design (PBWD), nonlinear-inelastic deformation in specially designed and detailed parts of MWFRSs enables an optimal design. However, controlling damage accumulation in structures can be challenging due to the substantial mean component of wind loads in the along-wind direction. To this end, self-centering systems such as coupled post-tensioned CLT (PT-CLT) walls can offer a solution. However, despite extensive analytical and experimental studies on the use of PT-CLT walls as seismic force-resisting systems, their use as MWFRSs has not been explored. Therefore, this paper proposes the use of PT-CLT walls as MWFRSs in tall mass timber buildings and develops a new PBWD approach for their design. To demonstrate the applicability of the PBWD approach, 8- and 16-story prototype mass timber buildings hypothetically located in Toronto, Canada, were designed using PBWD and load information from wind tunnel tests. For performance assessment, three-dimensional multi-spring numerical models were developed in <em>OpenSeesPy</em> and validated with full-scale quasi-static cyclic and shaking table experimental tests. Performance assessments using nonlinear response history analysis (NLRHA) under simultaneous along-, across-, and torsional-wind loads for 36 wind directions were carried out. The results indicate that the proposed PBWD framework is practical and effective for designing PT-CLT shear walls as MWFRSs in tall mass timber buildings.</div></div>","PeriodicalId":54752,"journal":{"name":"Journal of Wind Engineering and Industrial Aerodynamics","volume":"257 ","pages":"Article 105981"},"PeriodicalIF":4.2,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143099131","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}