Journal of Wind Engineering and Industrial Aerodynamics最新文献_第5页

High-speed railway traffic safety assessment on a bridge over a V-shaped valley using conditional wind velocity fields 基于条件风速场的高速铁路v型山谷桥交通安全评价

IF 4.2 2区工程技术

Journal of Wind Engineering and Industrial Aerodynamics Pub Date : 2025-03-13 DOI: 10.1016/j.jweia.2025.106082

J.M. Olmos , P.A. Montenegro , V. Puchol , J.A. del Valle , R. Calçada , M.Á. Astiz

{"title":"High-speed railway traffic safety assessment on a bridge over a V-shaped valley using conditional wind velocity fields","authors":"J.M. Olmos , P.A. Montenegro , V. Puchol , J.A. del Valle , R. Calçada , M.Á. Astiz","doi":"10.1016/j.jweia.2025.106082","DOIUrl":"10.1016/j.jweia.2025.106082","url":null,"abstract":"<div><div>The purpose of this researching work is to study railway traffic safety on an arch bridge over a V-shaped valley using realistic wind velocity fields, obtained from wind velocity records at the location of the bridge using conditional wind generation techniques. It is intended to check whether the operation rules that reduce the train speed in events of strong winds, are adequate in the case of an arch bridge such as the one studied. A model of non-linear dynamic interaction wind-train-track-bridge has been used. This model is divided into a FEM for the bridge, a multibody model for the train and a nonlinear model to reproduce the wheel-rail contact. The bridge FEM has been validated from bridge acceleration records obtained in events of strong winds. Four trains of three different types (conventional, articulated, and regular) have been studied. The results show that the operating rules that force the train to reduce speed with winds greater than 80 km/h of peak velocity or even to stop the train, are sufficiently conservative for all trains studied since only for peak wind velocity greater than 115 km/h trains studied could circulate unsafely.</div></div>","PeriodicalId":54752,"journal":{"name":"Journal of Wind Engineering and Industrial Aerodynamics","volume":"261 ","pages":"Article 106082"},"PeriodicalIF":4.2,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143609526","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}

引用次数: 0

Study on wind pressure of side-attached canopies atop buildings with setback 带挫折的侧附式顶棚风压研究

IF 4.2 2区工程技术

Journal of Wind Engineering and Industrial Aerodynamics Pub Date : 2025-03-13 DOI: 10.1016/j.jweia.2025.106081

Yuan Jiang , Yi Hui , Ming Li , Hao Zhu , Min Liu

{"title":"Study on wind pressure of side-attached canopies atop buildings with setback","authors":"Yuan Jiang , Yi Hui , Ming Li , Hao Zhu , Min Liu","doi":"10.1016/j.jweia.2025.106081","DOIUrl":"10.1016/j.jweia.2025.106081","url":null,"abstract":"<div><div>Rooftop canopies are prone to be damaged by wind. In this study, the wind load acting on side-attached canopies atop buildings with setback is studied based on wind tunnel experiments, considering the complex topology of medium- and low-rise buildings. Four different heights of the underneath building—6 m, 12 m, 18 m, and 24 m—and two setback heights—3 m and 6 m—are considered. The height of the canopy is fixed at 3 m, and wind pressures on both sides of the canopy are measured. The results show that the height of the building setback can significantly affect the wind pressure on the upper surface of the canopy, and blockage of the space between the canopy and roof has a strong effect on the wind pressure on the lower surface. The height of the underneath building is also a critical parameter for the wind load of the canopy. The non-Gaussianity of the canopy pressure data is examined, and the results show that different building setback heights may lead to quite different distribution characteristics. The maximum net wind pressures and total lift forces are also calculated and compared with wind load codes and the findings of previous studies, which may be helpful for the design of this type of canopy structure.</div></div>","PeriodicalId":54752,"journal":{"name":"Journal of Wind Engineering and Industrial Aerodynamics","volume":"261 ","pages":"Article 106081"},"PeriodicalIF":4.2,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143609525","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}

引用次数: 0

Numerical investigation into the mechanism of dust deposition on photovoltaic panels in the presence of an electrostatic dust barrier 静电粉尘屏障作用下光伏板粉尘沉积机理的数值研究

IF 4.2 2区工程技术

Journal of Wind Engineering and Industrial Aerodynamics Pub Date : 2025-03-12 DOI: 10.1016/j.jweia.2025.106071

Xiaohong Yan

引用次数: 0

Influence of levitation bogie structure aerodynamic loads on the dynamic performance of 600 km/h EMS maglev train 悬浮转向架结构气动载荷对600 km/h EMS磁悬浮列车动力性能的影响

IF 4.2 2区工程技术

Journal of Wind Engineering and Industrial Aerodynamics Pub Date : 2025-03-07 DOI: 10.1016/j.jweia.2025.106070

Yang Feng , Chunfa Zhao , Yeye Peng , Wenzhao Zhang , Dalian Yu , Xin Liang

{"title":"Influence of levitation bogie structure aerodynamic loads on the dynamic performance of 600 km/h EMS maglev train","authors":"Yang Feng , Chunfa Zhao , Yeye Peng , Wenzhao Zhang , Dalian Yu , Xin Liang","doi":"10.1016/j.jweia.2025.106070","DOIUrl":"10.1016/j.jweia.2025.106070","url":null,"abstract":"<div><div>As the operating speed of EMS high-speed maglev trains increases to 600 km/h, aerodynamic effects significantly impact running safety and stability. However, most studies considering aerodynamic loads by applying them to the carbody's mass center, overlooking the aerodynamic loads effects on bogie structures, such as skirt boards and levitation/guiding electromagnets. This study examines the dynamic performance of a Chinese 600 km/h maglev train. An aerodynamic model of a three-car trainset was developed to simulate running conditions at 600 km/h, both in open-line and tunnel scenarios. Aerodynamic loads on skirt boards, levitation, and guidance electromagnets were innovatively analyzed and applied to a maglev train dynamics model considering the skirt board. The findings reveal that aerodynamic loads on the levitation bogie at the train's front and rear are most significant, with lift and lateral forces posing potential running safety risks. During open-line operation, these loads exert minimal impact. However, in tunnels running condition, significant fluctuations occur during entry and pressure wave interactions, increasing dynamic responses and potentially compromising safety and levitation stability, and even bring levitation instability problem.</div></div>","PeriodicalId":54752,"journal":{"name":"Journal of Wind Engineering and Industrial Aerodynamics","volume":"261 ","pages":"Article 106070"},"PeriodicalIF":4.2,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143563798","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}

引用次数: 0

Modulating higher-order statistics of turbulent boundary layer wind fields using randomized grid roughness 用随机网格粗糙度调制湍流边界层风场的高阶统计量

IF 4.2 2区工程技术

Journal of Wind Engineering and Industrial Aerodynamics Pub Date : 2025-03-06 DOI: 10.1016/j.jweia.2025.106042

Mariel Ojeda-Tuz , Mohit Chauhan , Pedro Fernández-Cabán , Ryan Catarelli , Michael Shields , Kurtis Gurley

{"title":"Modulating higher-order statistics of turbulent boundary layer wind fields using randomized grid roughness","authors":"Mariel Ojeda-Tuz , Mohit Chauhan , Pedro Fernández-Cabán , Ryan Catarelli , Michael Shields , Kurtis Gurley","doi":"10.1016/j.jweia.2025.106042","DOIUrl":"10.1016/j.jweia.2025.106042","url":null,"abstract":"<div><div>Near ground wind velocity observations and wind tunnel measurements have identified height dependent non-Gaussian behavior in longitudinal wind turbulence. The potential sensitivity of bluff body peak pressure loads to non-Gaussian turbulence motivates an investigation to modulate longitudinal skewness in the approach flow through passive mechanical turbulence generation. It is currently an open question as to whether higher-order properties of turbulence can be modulated via roughness element grid. This research leverages outcomes from a recent active machine learning experimental study to modulate turbulence profiles in a boundary layer wind tunnel using an automated roughness grid. Reynolds stress fraction analyses of turbulence data from hundreds of non-homogeneous roughness configurations are related to the observed along wind turbulence skewness profile. The results identify a relationship between roughness element configuration features and resultant skewness profiles, providing insights into modulating higher-order longitudinal turbulence behavior in boundary layer wind simulation.</div></div>","PeriodicalId":54752,"journal":{"name":"Journal of Wind Engineering and Industrial Aerodynamics","volume":"261 ","pages":"Article 106042"},"PeriodicalIF":4.2,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143550570","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}

引用次数: 0

Discussion of: “A simplified analytical formula for the coefficient of 3rd-order Hermite model and its application” by Weihu Chen and Yuji Tian 讨论：陈卫虎、田玉吉“三阶Hermite模型系数的简化解析公式及其应用”

IF 4.2 2区工程技术

Journal of Wind Engineering and Industrial Aerodynamics Pub Date : 2025-02-28 DOI: 10.1016/j.jweia.2025.106058

Nicholas J. Cook

引用次数: 0

A proposed approach for combined wind and temperature loading of power transmission lines considering climate change effect 一种考虑气候变化影响的输电线路风温联合负荷方法

IF 4.2 2区工程技术

Journal of Wind Engineering and Industrial Aerodynamics Pub Date : 2025-02-27 DOI: 10.1016/j.jweia.2025.106057

Mohammad Ali Jafari, Salman Rezazadeh Baghal, Amir Mahmoudi

{"title":"A proposed approach for combined wind and temperature loading of power transmission lines considering climate change effect","authors":"Mohammad Ali Jafari, Salman Rezazadeh Baghal, Amir Mahmoudi","doi":"10.1016/j.jweia.2025.106057","DOIUrl":"10.1016/j.jweia.2025.106057","url":null,"abstract":"<div><div>This paper presents a framework to derive bivariate hazard curves for minimum temperature and maximum concurrent wind speed to characterize the combined wind and temperature loading of power transmission lines. Hazard curves are extracted for mean recurrence intervals (MRIs) of 50, 150, and 500-years, following IEC-60826 standard criteria. The framework employs the Joint Probability-Based Approach (JPBA) and Force-Based Approach (FBA) using numerical sampling of basic meteorological variables from historical data. It incorporates climate change effects by modeling minimum daily temperature trends through SARIMA time series analysis and Neural-Prophet machine learning. Correcting environmental effects is crucial for reliable meteorological simulations and accurate climate change trend capture. Considering climate change at the studied station, the framework shows minimum temperature extremes rise by 5 °C, 3 °C and 1 °C for 500, 150, and 50-year MRIs respectively. It models maximum daily wind speed probability distributions with monthly parameter variations. Simulations over 5000 years produce hazard curves based on JPBA and FBA and comparisons with IEC-60826 standard loading cases indicate conservative estimates in the JPBA-based approach. The IEC-60826 standard's first loading case for the 50 and 150-year MRIs is lower than the FBA-based hazard curves for all spans, with increasing underestimation as span length decreases.</div></div>","PeriodicalId":54752,"journal":{"name":"Journal of Wind Engineering and Industrial Aerodynamics","volume":"260 ","pages":"Article 106057"},"PeriodicalIF":4.2,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143507520","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}

引用次数: 0

Rapid evaluation of drivers’ ride comfort on long-span suspension bridges under VIV using Gaussian process regression 利用高斯过程回归快速评估 VIV 条件下大跨度悬索桥上驾驶员的乘坐舒适性

IF 4.2 2区工程技术

Journal of Wind Engineering and Industrial Aerodynamics Pub Date : 2025-02-26 DOI: 10.1016/j.jweia.2025.106060

Han Li , Ziluo Xiong , Jin Zhu , Longwei Ma , Yongle Li , Zongyu Gao

{"title":"Rapid evaluation of drivers’ ride comfort on long-span suspension bridges under VIV using Gaussian process regression","authors":"Han Li , Ziluo Xiong , Jin Zhu , Longwei Ma , Yongle Li , Zongyu Gao","doi":"10.1016/j.jweia.2025.106060","DOIUrl":"10.1016/j.jweia.2025.106060","url":null,"abstract":"<div><div>Vortex-induced vibration (VIV) significantly affects ride comfort and may necessitate traffic restrictions, disrupting economic and social activities. The combined impact of VIV and traffic on ride comfort is not well understood, and existing studies are often too time-consuming for timely bridge management decisions. This study aims to explore ride comfort on long-span suspension bridges (LSSBs) during VIV and develop an online prediction model for real-time evaluations, aiding bridge management decisions. A vortex-traffic-bridge (VTB) simulation platform is established to extract vehicle dynamic responses and calculate motion sickness incidence (MSI) for evaluating ride comfort during VIV. MSI is treated probabilistically due to traffic flow's stochastic nature. The optimal probabilistic distribution model (PDM) for MSI data is identified using Jensen-Shannon divergence. A Gaussian process regression (GPR) surrogate model is constructed with VIV mode, VIV amplitude, and traffic density as inputs, and PDM parameters for MSI as outputs. A case study of a prototype LSSB using the GPR surrogate model thoroughly investigates the influence of VIV mode, VIV amplitude, and traffic density on MSI. This model can timely predict drivers' MSI under VIV, aiding effective bridge management decisions.</div></div>","PeriodicalId":54752,"journal":{"name":"Journal of Wind Engineering and Industrial Aerodynamics","volume":"260 ","pages":"Article 106060"},"PeriodicalIF":4.2,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143487414","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}

引用次数: 0

Identification of flow regimes and dispersion pathways around in-line cylinders 直列圆柱周围流动形式和分散路径的识别

IF 4.2 2区工程技术

Journal of Wind Engineering and Industrial Aerodynamics Pub Date : 2025-02-23 DOI: 10.1016/j.jweia.2025.106046

G. Duan , R. Gao , L. Zhao , T. Yang , T. Takemi

{"title":"Identification of flow regimes and dispersion pathways around in-line cylinders","authors":"G. Duan , R. Gao , L. Zhao , T. Yang , T. Takemi","doi":"10.1016/j.jweia.2025.106046","DOIUrl":"10.1016/j.jweia.2025.106046","url":null,"abstract":"<div><div>Flow and dispersion over in-line cylinders have received considerably less attention compared to those around isolated cylindrical obstacles in the fluid dynamics literature and within cuboid-delimited street canyons in the urban boundary-layer context. This investigation reveals that tank canyons share similar flow characteristics with street canyons while demonstrating distinct features. The flow regime transition from isolated to wake interference and skimming with respect to the canyon aspect ratio (<span><math><mrow><mi>A</mi><mi>R</mi></mrow></math></span>), well established for urban canyons, is preserved in the case of tank canyons; however, turbulent flux exchanges across the canyon side open boundaries are more pronounced in the latter, attributed to reinforced flow encirclement around the cylindrical obstacles and enhanced horseshoe vortices. Dispersion pathways, in particular the centre-of-mass translation and mean tracer ages (<span><math><msub><mrow><mi>τ</mi></mrow><mrow><mi>a</mi></mrow></msub></math></span>), closely align with the flow regime. The overall monotonic increase in <span><math><msub><mrow><mi>τ</mi></mrow><mrow><mi>a</mi></mrow></msub></math></span> with <span><math><mrow><mi>A</mi><mi>R</mi></mrow></math></span>, alongside a notable (<span><math><mrow><mo>∼</mo><mn>30</mn><mtext>%</mtext></mrow></math></span>) decrease in the mean canyon circulation timescale (<span><math><msub><mrow><mi>T</mi></mrow><mrow><mi>c</mi></mrow></msub></math></span>), offers useful insights for the parameterisation of key timescales associated with flow and ventilation in cylinder-delimited canyons. Knowledge of the microenvironments within tank canyons is vital for integrating complex petrochemical plants into urban topographies, constituting an integral part of urban micrometeorological systems.</div></div>","PeriodicalId":54752,"journal":{"name":"Journal of Wind Engineering and Industrial Aerodynamics","volume":"260 ","pages":"Article 106046"},"PeriodicalIF":4.2,"publicationDate":"2025-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143474622","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}

引用次数: 0

Cladding pressure and load characteristics of a tall building under a simulated tornado-like vortex: An experimental study 模拟龙卷风涡旋作用下高层建筑覆层压力与荷载特性的实验研究

IF 4.2 2区工程技术

Journal of Wind Engineering and Industrial Aerodynamics Pub Date : 2025-02-22 DOI: 10.1016/j.jweia.2025.106059

Nayan Deep Tiwari, Partha P. Sarkar

{"title":"Cladding pressure and load characteristics of a tall building under a simulated tornado-like vortex: An experimental study","authors":"Nayan Deep Tiwari, Partha P. Sarkar","doi":"10.1016/j.jweia.2025.106059","DOIUrl":"10.1016/j.jweia.2025.106059","url":null,"abstract":"<div><div>Tornadoes, characterized by their destructive wind forces and unpredictable nature, pose a significant threat to tall buildings. Understanding the cladding pressure distribution on tall buildings during tornado events is crucial for designing these structures that can withstand extreme forces. The present study provides a comprehensive analysis of the aerodynamic loads and cladding pressure characteristics of a tall building in a tornado by employing an aeroelastic model under a laboratory-simulated tornado at Iowa State University-Tornado Simulator (ISU-TS) facility. This study utilizes a 1:350 scale model of a tapered tall building with a circular cross-section to evaluate the dynamic loads and pressure distribution along the height and perimeter of the building during a stationary and translating tornado. Particular attention has been given to study the correlation of aerodynamic loads as a function of the radial distance from the tornado core, with the comparison of results between the stationary and translating tornado cases. The results indicate that peak aerodynamic loads on the tall building model occur once the tornado has passed the building's center. Correlation analysis shows that cross-correlation coefficient values of aerodynamic forces decrease more significantly with increasing radial distance from the tornado's core. Wavelet analysis results indicate that the critical time period, where peak aerodynamic forces occur, differs between the two directions, implying the building's vulnerability to peak loads is direction dependent.</div></div>","PeriodicalId":54752,"journal":{"name":"Journal of Wind Engineering and Industrial Aerodynamics","volume":"260 ","pages":"Article 106059"},"PeriodicalIF":4.2,"publicationDate":"2025-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143471235","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}

引用次数: 0