Journal of Wind Engineering and Industrial Aerodynamics最新文献

{"title":"Research on wind-induced bending-torsion coupling vibration mechanism and pneumatic vibration reducing measures of large-span flexible photovoltaic arrays under 0° incoming flows","authors":"Bo-yang Wang ,&nbsp;Shi-tang Ke ,&nbsp;Li-shan Wang ,&nbsp;Yan Qin ,&nbsp;Wen-jie Li","doi":"10.1016/j.jweia.2025.106124","DOIUrl":"10.1016/j.jweia.2025.106124","url":null,"abstract":"<div><div>Inter-span series connection and inter-row parallel connection are important connection modes to guarantee the overall stability of large-span flexible photovoltaic arrays. However, the array structure is easy to suffer bending-torsion coupling instability vibration under the maximum thrust of 0° incoming flows. In particular, the first row of photovoltaic suffers the most significant wind load and wind-induced vibration. Therefore, it has important engineering application values to study wind-induced bending-torsion coupling vibration mechanism and vibration damping technology of the large-span flexible photovoltaic arrays under the 0° incoming flows. Firstly, a five-row and three-span complete aeroelastic model that can measure displacement of photovoltaic plates was designed and manufactured. Secondly, a 3D noncontact real-time multipoint vibration measurement technology is proposed to study the wind-induced bending-torsion coupling vibration of flexible photovoltaic arrays at varying wind speeds. Later, four new pneumatic spoiler devices were put forward. The pneumatic vibration damping effect was analyzed by the complete ensemble empirical mode decomposition with adaptive noise (CEEMDAN) and frequency slice wavelet transform(FSWT). Research results demonstrate that: the bending-torsion coupling vibration of the flexible photovoltaic arrays with wind speed under 0° incoming flows changes from the high-order torsion mode and low-order vertical bending mode to low-order bending-torsion coupling mode. When the wind speed is higher 30.36 m/s, the structure begins to produce vertical bending-torsion coupling vibration and frequency-doubled effect, showing significant nonlinear features. Based on static wind displacement response and time-frequency energy distribution of the structure, it found from a comparison that the “&gt;-shaped” spoiler device has the optimal vibration inhibition effect and the maximum vibration inhibition rate is 75.4 %. The “&lt;-shaped” spoiler device has the second vibration inhabitation effect, while the “L-shaped” and “Γ-shaped” devices show the poorest effect and the minimum vibration inhibition rate is 62.3 %.</div></div>","PeriodicalId":54752,"journal":{"name":"Journal of Wind Engineering and Industrial Aerodynamics","volume":"263 ","pages":"Article 106124"},"PeriodicalIF":4.2,"publicationDate":"2025-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143899629","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":"Scaling wind loads for incremental dynamic analysis applications","authors":"Anastasia Athanasiou ,&nbsp;Lucia Tirca ,&nbsp;Ted Stathopoulos","doi":"10.1016/j.jweia.2025.106116","DOIUrl":"10.1016/j.jweia.2025.106116","url":null,"abstract":"<div><div>Incremental Dynamic Analysis is a powerful tool for the performance assessment of structures where a full range of responses can be mapped. Currently, an open discussion among researchers is the scaling of wind loads at increasing hazard intensities. In common practice, local aerodynamic pressure data from wind tunnel testing are normalized with respect to the mean wind velocity. Then, the value is linearly scaled up to provide wind loads at considered limit states. The main issue in the linear scaling of winds is the non-consideration of cross-correlation between different time histories and the mean wind velocity. To address this issue, the Wieringa gust model is applied to account for the dependency of gustiness on mean wind speed, thereby updating the scaling coefficients for both mean and turbulent wind components. This methodology is demonstrated through the application of wind IDA on a high-rise steel hospital in Montreal, Canada. The building is designed to meet the code requirements for wind and earthquake loads. Finite element models that incorporate geometrical and material nonlinearities of building's lateral force-resisting systems are developed in OpenSees. These nonlinear models are used to analyze the impact of linear gust scaling on the building's performance under varying wind intensities.</div></div>","PeriodicalId":54752,"journal":{"name":"Journal of Wind Engineering and Industrial Aerodynamics","volume":"263 ","pages":"Article 106116"},"PeriodicalIF":4.2,"publicationDate":"2025-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143895700","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":"Theoretical model and numerical investigation of ventilation efficiency and pollution characteristics of multi gaseous pollutants in construction tunnel","authors":"Zhuwei Xie ,&nbsp;Dingfu Li ,&nbsp;Yimin Xiao ,&nbsp;Huijun Wu","doi":"10.1016/j.jweia.2025.106115","DOIUrl":"10.1016/j.jweia.2025.106115","url":null,"abstract":"<div><div>Gaseous pollutants (CO, gas, etc.) generated from underground construction tunnels threaten the safety and health of workers, which goes against the concept of green and sustainable development. To efficiently relieve the air pollution in construction tunnel environments, this study innovatively proposed an exhaust factor ventilation model that considered non-uniform mixing of pollutants to characterize the ventilation efficiency of different gaseous pollutants. Subsequently, the airflow distribution and pollution characteristics of gaseous pollutants under different air duct diameters were investigated in depth by combining the exhaust factor ventilation model and numerical simulation. The results demonstrated that the release mode of pollutants affected the spatiotemporal diffusion characteristics of pollutants, where the diffusion distance of CO exhibited a linear function over time, while the diffusion distance of gas exhibited a cubic polynomial function over time. Moreover, the continuously released pollutant had superior ventilation efficiency compared to the one-time produced pollutant, where the exhaust factor of gas was 0.9787–1.0508, which was higher than that of CO (0.5425–0.6815). Furthermore, air duct diameter played a crucial role in improving the control effect of gaseous pollutants without increasing additional costs, as evidenced by an increasing trend in ventilation efficiency, a decreasing trend in CO clearance time and gas volume fraction with an increase in air duct diameter. This research can provide new insights for the control and treatment of gaseous pollutants in construction tunnel environments.</div></div>","PeriodicalId":54752,"journal":{"name":"Journal of Wind Engineering and Industrial Aerodynamics","volume":"263 ","pages":"Article 106115"},"PeriodicalIF":4.2,"publicationDate":"2025-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143882555","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":"Vortex-induced vibration effects on train dynamics and safety-comfort evaluation in wind-train-bridge coupled system","authors":"Tianyu Chen ,&nbsp;Cunming Ma ,&nbsp;Qingsong Duan ,&nbsp;Kai Cheng ,&nbsp;Cheng Pei","doi":"10.1016/j.jweia.2025.106114","DOIUrl":"10.1016/j.jweia.2025.106114","url":null,"abstract":"<div><div>With the continuous improvement of the bridge span, the phenomenon of vortex-induced vibration (VIV) in railway bridges can disrupt the normal functioning of railway systems. This paper establishes a method for wind-train-bridge-VIV, focusing on the dynamic responses of the bridge and the impact of the train during such events. Additionally, the study evaluates the effects of critical parameters like the amplitude of VIV, the train's operational velocity, and the initial phase angle of VIV on the dynamic reactions of the train and the bridge. The allowable values of VIV for the railway bridge are also investigated. The findings reveal that the three key factors substantially impact the dynamic reactions experienced by the railway bridge and the train. Notably, the VIV amplitude is a dominant factor in the vertical dynamic response, exerting a substantial impact on train ride comfort. Consequently, it is imperative to impose limitations on the VIV amplitude in railway bridges to maintain operational efficiency and passenger comfort.</div></div>","PeriodicalId":54752,"journal":{"name":"Journal of Wind Engineering and Industrial Aerodynamics","volume":"263 ","pages":"Article 106114"},"PeriodicalIF":4.2,"publicationDate":"2025-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143882439","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":"Efficient prediction of unsteady piston winds in subway tunnels based on machine learning","authors":"Xue Liu ,&nbsp;Jian Liu ,&nbsp;Peng Cao ,&nbsp;Yu Wang ,&nbsp;Honglin Wang ,&nbsp;Dong Wang","doi":"10.1016/j.jweia.2025.106111","DOIUrl":"10.1016/j.jweia.2025.106111","url":null,"abstract":"<div><div>In emergencies such as fires in subway tunnels, the rapid prediction of piston winds therein is needed to provide theoretical guidance for emergency decision-making and fire rescue. Previous research has neglected the efficiency of piston wind prediction. For this reason, to improve on traditional methods, this paper uses eight different machine learning algorithms, including support vector regression (SVR), k-nearest neighbors (KNN), and extreme gradient boosting (XGBoost) et al., to construct a fast prediction model for unsteady piston winds in subway tunnels. A relatively optimal machine learning algorithm was determined through various evaluation methods, and feature importance analysis was carried out. The results show that it is feasible to utilize a machine-learning method for the fast prediction of unsteady piston winds in subway tunnels. The RF algorithm had a high prediction accuracy for unsteady piston winds, and the Mean Absolute Error (MAE), Root Mean Squared Error (RMSE), Symmetric Mean Absolute Percentage Error (SMAPE), and Coefficient of Determination (R²) of the prediction results were 0.04, 0.05, 1.15 %, and 0.995, respectively. The influence degree of each factor on the subway tunnel piston wind, in descending order, is as follows: time <em>t</em>&gt;blockage ratio <em>β</em>&gt;train running speed <em>u</em>&gt;tunnel length <em>l</em>_<em>tu</em>&gt;train length <em>l</em>_<em>tr</em>.</div></div>","PeriodicalId":54752,"journal":{"name":"Journal of Wind Engineering and Industrial Aerodynamics","volume":"262 ","pages":"Article 106111"},"PeriodicalIF":4.2,"publicationDate":"2025-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143851460","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 calibrating method of roadway wind resistance based on air volume","authors":"Yue-Ping Qin ,&nbsp;Peng Wang ,&nbsp;Fei Tang ,&nbsp;Ming-yan Guo ,&nbsp;Feng-jie Zhang ,&nbsp;Hao Xu","doi":"10.1016/j.jweia.2025.106110","DOIUrl":"10.1016/j.jweia.2025.106110","url":null,"abstract":"<div><div>Ventilation network analysis is the basis for decision-making and control of mine ventilation system (MVS). It is crucial that the wind resistance (WR) in each branch of the mine ventilation network has a sufficiently small margin of error. WR is typically measured using precision barometers via a simultaneous measurement approach, or it is derived from empirical formulas based on the roadway's parameters. In practice, on-site measurements are often time-consuming and labor-intensive, and empirical formulas frequently introduce significant errors. Such errors complicate the calculation of precise airflow information, thereby impeding the accurate control of air volume. Here, we propose a WR calibrating method for roadways based on air volume. This method establishes a quadratic programming (QP) optimization model to calculate the equivalent wind resistance (EWR), utilizing actual air volume measurements and the historical wind resistance (WR) data. Moreover, the inequality constraints and weight selection of the roadway are discussed and tested. Finally, on-site verification (Ma-cheng Iron Mine in November 2023) was carried on. We find that after our method of WR calibration, the results of the ventilation network calculation were significantly more in line with the actual air distribution in the mine's roadways compared to the results without calibration. Overall, our method obtains the globally reasonable EWR and provides a reliable guarantee for air volume monitoring and regulation.</div></div>","PeriodicalId":54752,"journal":{"name":"Journal of Wind Engineering and Industrial Aerodynamics","volume":"262 ","pages":"Article 106110"},"PeriodicalIF":4.2,"publicationDate":"2025-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143843632","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":"In-line force modeling for a circular cylinder in oscillatory flow with non-zero mean velocity","authors":"Yayang Huang ,&nbsp;Shuyang Cao ,&nbsp;Da Cao ,&nbsp;Qingshan Yang","doi":"10.1016/j.jweia.2025.106109","DOIUrl":"10.1016/j.jweia.2025.106109","url":null,"abstract":"<div><div>Three-dimensional large eddy simulation (LES) of oscillatory flow with non-zero mean velocity around a circular cylinder is carried out at Reynolds number Re = 15000 to investigate the effects of amplitude ratio (AR) and Keulegan-Carpenter (KC) number on wake structure and fluid forces. The applicability of two-term and three-term Morison equations for modeling the time histories of in-line force is examined. The results show that both AR and KC strongly influence the vortex pattern. The drag coefficient (<em>C</em>_<em>d</em>) of Morison equations increases from a small value with KC first and then decreases and converges to the value of mean drag force in steady flow, with a peak presented when the value of AR/KC is around the Strouhal number (<em>St</em>₀) in steady flow because of resonance effect. This tendency is more significant at higher AR values. The three-term Morison equation exhibits better performance in modeling the in-line fluid force when AR/KC &gt; <em>St</em>₀/3, i.e., the oscillation frequency is greater than three times the vortex shedding frequency in steady flow. In addition, the revised KC number is not appropriate for modeling the flow force in oscillatory flow with non-zero mean velocity.</div></div>","PeriodicalId":54752,"journal":{"name":"Journal of Wind Engineering and Industrial Aerodynamics","volume":"262 ","pages":"Article 106109"},"PeriodicalIF":4.2,"publicationDate":"2025-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143821074","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":"An experimental study of aerodynamics on cable-supported photovoltaic panel arrays at different tilt angles","authors":"Jiawei Wan ,&nbsp;Yunzhu Cai ,&nbsp;Hai Fang","doi":"10.1016/j.jweia.2025.106093","DOIUrl":"10.1016/j.jweia.2025.106093","url":null,"abstract":"<div><div>This paper presents an experimental investigation of unsteady aerodynamic lift and overturning moment on cable-supported photovoltaic (PV) panel arrays. Unlike prior studies focusing on area-averaged and peak pressure coefficients, this work examines second-order statistics of aerodynamic forces by analyzing fluctuating pressures on scaled models of PV panel rows. Wind tunnel tests were conducted on panels at different tilt angles, with synchronized pressure measurements used to compute aerodynamic coefficients, spectra, correlations, and coherences for lift and overturning moment. Results demonstrate that spanwise correlations and coherences of these aerodynamics exceed those of incident turbulence for most cases. The two-wavenumber aerodynamic admittance model, defined as the product of a 2D aerodynamic admittance function (AAF) and a spanwise correction factor, was employed to characterize unsteady wind loads. For zero tilt angle, the 2D AAFs for lift and moment deviated from the Sears function, displaying a transitional region where values surpassed the Sears function. For tilted PV panels, distinct peaks in the AAFs at elevated wavenumbers were observed, linked to shear layer instabilities in the leading-edge separation zone. An empirical model for the 2D AAF was proposed, which incorporates a correction term to capture these peaks, highlighting their significance in buffeting response calculations.</div></div>","PeriodicalId":54752,"journal":{"name":"Journal of Wind Engineering and Industrial Aerodynamics","volume":"262 ","pages":"Article 106093"},"PeriodicalIF":4.2,"publicationDate":"2025-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143817017","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":"Study on the law of dust isolation by three-dimensional adjustable rotating flow air curtain in fully mechanized mining face","authors":"Yifan Wang ,&nbsp;Lirong Wu ,&nbsp;Xiaowen Sun ,&nbsp;Jinhao Zhang","doi":"10.1016/j.jweia.2025.106096","DOIUrl":"10.1016/j.jweia.2025.106096","url":null,"abstract":"<div><div>In order to effectively isolate the dust generated during coal mining operations and reduce the dust diffusion to the working area, this paper designs an air curtain which can be adjusted in three directions and installed on the rocker arm of shearer. Through the numerical simulation the air curtain dust isolation law was studied, when the air curtain outlet wind velocity (V_ac), the distance between the air curtain and the shearer drum front (D_ad), the distance between the air curtain and the shearer body (D_as), the airflow injection angle (<span><math><mrow><mi>θ</mi></mrow></math></span>), the inlet wind velocity of the roadway (V_in) and other parameters changed, and the best parameters were chosen. According to the numerical simulation results, the dust isolation efficiency near the shearer's working area can reach 93 %, and the dust isolation efficiency in the downwind area of the shearer can reach 84 %. Based on the numerical simulation, a similar model is established and the experiment is carried out. The experimental results showed that the dust isolation effect of the similar model is similar to that of the numerical simulation. This study provides theoretical and practical value for effective isolation of dust.</div></div>","PeriodicalId":54752,"journal":{"name":"Journal of Wind Engineering and Industrial Aerodynamics","volume":"262 ","pages":"Article 106096"},"PeriodicalIF":4.2,"publicationDate":"2025-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143808432","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 measurement analysis of wind profiles in mountainous terrain: Focusing on periodic thermally-developed winds","authors":"Tingyuan Yan ,&nbsp;Jingxi Qin ,&nbsp;Mingjin Zhang ,&nbsp;Fanying Jiang ,&nbsp;Jinxiang Zhang ,&nbsp;Yongle Li","doi":"10.1016/j.jweia.2025.106108","DOIUrl":"10.1016/j.jweia.2025.106108","url":null,"abstract":"<div><div>Periodic thermally-developed wind, generated by local thermal gradients, is one of the most frequent wind phenomena in mountainous terrains. Studying its wind profile is crucial for characterizing local wind fields. This study utilizes wind radars and automatic weather stations to conduct long-term measurements of wind characteristics at different heights onsite of a long-span bridge located in a deep-cut canyon and employs the correlation between the recorded wind speed and temperature to identify periodic thermally-developed wind events. Based on the identification result, the wind profiles of the periodic thermally-developed wind events are analyzed for their temporal and spatial characteristics and are systematically categorized into four stages. By extracting and analyzing the high wind speed profiles recorded in the mountainous terrains, it is revealed that the recorded wind profile differs significantly from traditional wind profiles in plain and coastal terrains. As a result, a new normalization wind speed profile model suitable for mountainous terrain is proposed using a wind speed threshold sliding sampling method, and a combined wind parameters profile model is constructed combined with the Copula and Inverse First-Order Reliability Method.</div></div>","PeriodicalId":54752,"journal":{"name":"Journal of Wind Engineering and Industrial Aerodynamics","volume":"262 ","pages":"Article 106108"},"PeriodicalIF":4.2,"publicationDate":"2025-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143817016","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}