Journal of Wind Engineering and Industrial Aerodynamics最新文献_第4页

Reducing adverse tunnel aerodynamics via nose-based suction & blowing during ultra-high-speed trains meeting scenario 在超高速列车相遇的场景中，通过基于鼻子的吸气和吹气来减少不利的隧道空气动力学

IF 4.9 2区工程技术

Journal of Wind Engineering and Industrial Aerodynamics Pub Date : 2025-08-20 DOI: 10.1016/j.jweia.2025.106209

Yifan Gu , Pengpeng Ding , Chongyu Lu , Tianyin Luo , Zhongjian Liu , Zhengwei Chen , Wenhui Li

{"title":"Reducing adverse tunnel aerodynamics via nose-based suction & blowing during ultra-high-speed trains meeting scenario","authors":"Yifan Gu , Pengpeng Ding , Chongyu Lu , Tianyin Luo , Zhongjian Liu , Zhengwei Chen , Wenhui Li","doi":"10.1016/j.jweia.2025.106209","DOIUrl":"10.1016/j.jweia.2025.106209","url":null,"abstract":"<div><div>With the advancement of high-speed railway and the advent of ultra-high-speed maglev, conventional passive mitigation strategies are increasingly insufficient in addressing the tunnel aerodynamic challenges. This study numerically investigates the aerodynamic responses of two trains passing each other in a tunnel at 600 km/h, employing active flow control (AFC) via suction and blowing slots integrated into the train noses. Simulations were conducted using a validated 3D compressible URANS framework with sliding mesh techniques. The analysis explores the effects of two slot configurations, low-velocity large-area (LVLA) and high-velocity small-area (HVSA), under constant volumetric flow rate, along with the influence of suction/blowing velocities (<em>SB</em><sub><em>v</em></sub>). Results show that LVLA performs better, reducing tunnel wall pressure peaks by 3.4 %, drag by 2.4 %, and rolling moment by 6.7 % compared to HVSA design. As <em>SB</em><sub><em>v</em></sub> increases from 0 to 45 m/s, both tunnel and train surface pressure fluctuations are reduced, following a quadratic decay trend. Notably, the peak-to-peak pressure Δ<em>P</em> and micro-pressure waves (MPWs) are reduced by 27.2 % and 26.8 %, respectively. Moreover, AFC also improves aerodynamic load performance across all cars, with lateral force (ΔF<sub><em>y</em></sub>) reduced by up to 31.5 % of the leading car, and rear-nose blowing lowering rear-car positive lift by 22.8 %, thereby enhancing tunnel operational stability. These findings highlight that AFC offers a flexible and effective strategy for alleviating tunnel aerodynamic issues in ultra-high-speed rail/maglev systems.</div></div>","PeriodicalId":54752,"journal":{"name":"Journal of Wind Engineering and Industrial Aerodynamics","volume":"266 ","pages":"Article 106209"},"PeriodicalIF":4.9,"publicationDate":"2025-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144880108","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

CWE study of the aerodynamic interaction between a porous fence and a ground-mounted solid obstacle via pressure jump approach 基于压力跳变方法的多孔栅栏与地面固体障碍物气动相互作用的CWE研究

IF 4.9 2区工程技术

Journal of Wind Engineering and Industrial Aerodynamics Pub Date : 2025-08-14 DOI: 10.1016/j.jweia.2025.106198

Lorenzo Raffaele , Nicolas Coste

{"title":"CWE study of the aerodynamic interaction between a porous fence and a ground-mounted solid obstacle via pressure jump approach","authors":"Lorenzo Raffaele , Nicolas Coste","doi":"10.1016/j.jweia.2025.106198","DOIUrl":"10.1016/j.jweia.2025.106198","url":null,"abstract":"<div><div>Porous fences are widely used to mitigate wind-induced effects on built and natural environments. Computational Wind Engineering (CWE) simulations based on Pressure Jump (PJ) approach offer a cost-effective and versatile tool for early-stage design, offering the capability to evaluate a broad spectrum of global and local engineering performance metrics. Although the PJ approach has been validated for external flows in wind engineering applications, previous studies have typically focused on a narrow set of performance metrics. This study evaluates the capability of the PJ method to predict a broad range of engineering metrics by modelling a porous fence sheltering a nominally two-dimensional triangular ridge as a representative case study. The objective is to assess whether the PJ approach can reliably capture performance metrics relevant to wind erosion control, windblown sand transport, and wind-induced loading. Additionally, the study investigates whether a CWE model, separately validated for the distinct aerodynamic behaviours of the porous fence and the ridge, can accurately reproduce their aerodynamic interaction. Results show strong qualitative agreement, but reveal limitations in quantitative accuracy, particularly in the near-wake region immediately downwind of the fence.</div></div>","PeriodicalId":54752,"journal":{"name":"Journal of Wind Engineering and Industrial Aerodynamics","volume":"266 ","pages":"Article 106198"},"PeriodicalIF":4.9,"publicationDate":"2025-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144830227","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 analysis on dynamic airtightness of a high-speed train passing through tunnels based on equivalent leakage coupling 基于等效泄漏耦合的高速列车通过隧道动态气密性数值分析

IF 4.9 2区工程技术

Journal of Wind Engineering and Industrial Aerodynamics Pub Date : 2025-08-14 DOI: 10.1016/j.jweia.2025.106208

Nianxun Li, Tian Li, Jiye Zhang

{"title":"Numerical analysis on dynamic airtightness of a high-speed train passing through tunnels based on equivalent leakage coupling","authors":"Nianxun Li, Tian Li, Jiye Zhang","doi":"10.1016/j.jweia.2025.106208","DOIUrl":"10.1016/j.jweia.2025.106208","url":null,"abstract":"<div><div>When a high-speed train passes through a tunnel, pressure waves are transferred inside and outside the train through equivalent leakage holes. This study focuses on the flow field coupling of the train's interior and exterior by establishing a numerical model. Using the RNG <em>k-ε</em> turbulence model and sliding mesh approach, numerical simulations are conducted to investigate the dynamic airtightness of the train during tunnel transit. The simulations analyze the effects of equivalent leakage hole parameters and operational environments, including leakage hole area and position, train speed, and tunnel length. The accuracy of the simulation method is validated by comparing results with full-scale tests, demonstrating consistency with theoretical calculations. Results show that the dynamic airtightness index decreases as the leakage hole area increases, indicating an inverse relationship. Pressure variations inside the train are primarily influenced by external pressure near the leakage hole. The greatest airtightness index of 10.82 s occurs when the leakage hole is located at the train's top. The most significant internal pressure changes occur when the train passes through a 110 m tunnel, leading to the lowest dynamic airtightness index. For tunnels longer than 110 m, the dynamic airtightness index stabilizes, with variations remaining below 2 %.</div></div>","PeriodicalId":54752,"journal":{"name":"Journal of Wind Engineering and Industrial Aerodynamics","volume":"266 ","pages":"Article 106208"},"PeriodicalIF":4.9,"publicationDate":"2025-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144831464","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

Mechanism of wake-induced vibration and mitigation in parallel box girders of coastal long-span cable-stayed bridges 沿海大跨度斜拉桥平行箱梁尾迹振动机理及减振研究

IF 4.9 2区工程技术

Journal of Wind Engineering and Industrial Aerodynamics Pub Date : 2025-08-13 DOI: 10.1016/j.jweia.2025.106206

Xuli Chen , Huoyue Xiang , Yongle Li

{"title":"Mechanism of wake-induced vibration and mitigation in parallel box girders of coastal long-span cable-stayed bridges","authors":"Xuli Chen , Huoyue Xiang , Yongle Li","doi":"10.1016/j.jweia.2025.106206","DOIUrl":"10.1016/j.jweia.2025.106206","url":null,"abstract":"<div><div>Coastal long-span parallel bridges exhibit complex aerodynamic interference due to the narrow distance between two decks and high wind barriers. In wind tunnel experiments, the vibration characteristics of parallel bridges with original cross-sections are evaluated, and a novel aerodynamic countermeasure is proposed to mitigate wake-induced vibrations (WIV). A fluid-structure coupling model for parallel bridges is then constructed to analyze the WIV mechanism and the mitigation measure. The results show that when the windward bridge employs slatted wind barriers and installs continuous maintenance tracks on the lower deck, the leeward bridge encounters significant vertical and torsional WIV. Large-scale vortices generated in the wake regions of the upper and lower decks periodically shed and dissipate in the slot between the parallel bridges, forming harmonic wakes that induce significant WIV. When the maintenance tracks are on the upper deck or intermittent, and the guiding wind barrier blades are tilted downward by 10° toward the leeward bridge, the WIV amplitude can be notably reduced. The downward-tilted blades direct the flow obliquely downward, which limits vortices shedding and movement from the wake region of the windward bridge. This mitigates the formation of harmonic wake, reducing the vertical and torsional WIV of the leeward bridge.</div></div>","PeriodicalId":54752,"journal":{"name":"Journal of Wind Engineering and Industrial Aerodynamics","volume":"266 ","pages":"Article 106206"},"PeriodicalIF":4.9,"publicationDate":"2025-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144831463","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

Riblets and scales on 3D-printed wind turbine blades: Influence of surface micro-patterning properties on enhancing aerodynamic performance 3d打印风力涡轮机叶片上的波纹和鳞片：表面微图案特性对增强气动性能的影响

IF 4.9 2区工程技术

Journal of Wind Engineering and Industrial Aerodynamics Pub Date : 2025-08-06 DOI: 10.1016/j.jweia.2025.106188

Amr Khedr , Keshav Panthi , Wasi Uddin Ahmed , Francesco Castellani , Giacomo Valerio Iungo

{"title":"Riblets and scales on 3D-printed wind turbine blades: Influence of surface micro-patterning properties on enhancing aerodynamic performance","authors":"Amr Khedr , Keshav Panthi , Wasi Uddin Ahmed , Francesco Castellani , Giacomo Valerio Iungo","doi":"10.1016/j.jweia.2025.106188","DOIUrl":"10.1016/j.jweia.2025.106188","url":null,"abstract":"<div><div>Surface textures that can be observed on certain natural elements, such as rice leaves, butterfly wings, shark skins, or fish scales, have inspired manufacturing of 3D-printed wind turbine blades by embedding riblets and scales to enhance the aerodynamic performance. In this study, the characteristics of the blade surface are varied by changing the 3D printing parameters (e.g., precision, layer height, and printing direction) to quantify their effects on the power and thrust coefficients of the wind turbine rotor through wind tunnel experiments. Interestingly, the change in the 3D printing parameters significantly affects the aerodynamic performance of the wind turbine rotor. Specifically, all blade models with riblets show enhanced stall performance compared to the baseline case, with greater improvements by decreasing the layer height. However, for low-precision 3D printing systems, small layer heights can result in the generation of random roughness rather than riblet or scale patterns, thus leading to significant degradation in the aerodynamic performance. The fish scale-like surfaces exhibited the highest energy efficiency with an increase of up to 78% in the power coefficient at the highest tip speed ratio tested for the rotor model.</div></div>","PeriodicalId":54752,"journal":{"name":"Journal of Wind Engineering and Industrial Aerodynamics","volume":"266 ","pages":"Article 106188"},"PeriodicalIF":4.9,"publicationDate":"2025-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144780586","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

Wind tunnel study of source location effects on pollutant dispersion around uniform tall building clusters 污染源位置对均匀高层建筑群周围污染物扩散影响的风洞研究

IF 4.9 2区工程技术

Journal of Wind Engineering and Industrial Aerodynamics Pub Date : 2025-08-06 DOI: 10.1016/j.jweia.2025.106194

Dianfang Bi, Abhishek Mishra, Marco Placidi, Alan Robins, Matteo Carpentieri

{"title":"Wind tunnel study of source location effects on pollutant dispersion around uniform tall building clusters","authors":"Dianfang Bi, Abhishek Mishra, Marco Placidi, Alan Robins, Matteo Carpentieri","doi":"10.1016/j.jweia.2025.106194","DOIUrl":"10.1016/j.jweia.2025.106194","url":null,"abstract":"<div><div>This study investigates the dispersion characteristics of pollutants around a group of tall buildings (hereafter a cluster), focusing on the effects of different source locations within and around the cluster. The wind tunnel experiments included simultaneous tracer concentration and three-component velocity measurements. Some of the experimental cases showed marked bimodal plume shapes. A bi-Gaussian distribution fitting was used to delineate the plume boundaries. Results demonstrate that the location of the pollutant source notably affects plume development. Specifically, upstream sources (relative to the cluster) lead to a more uniform pollutant distribution, whereas central sources (within the cluster) result in bimodal concentration profiles. Analysis of pollutant fluxes in both horizontal and vertical planes reveals distinct scalar transport characteristics across different wake regions. In proximity to the cluster, a gradient transport model approach highlighted that upstream sources experienced greater advective transport, whereas sources within the cluster exhibited stronger turbulent mixing.</div></div>","PeriodicalId":54752,"journal":{"name":"Journal of Wind Engineering and Industrial Aerodynamics","volume":"266 ","pages":"Article 106194"},"PeriodicalIF":4.9,"publicationDate":"2025-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144780561","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

Suppression of multi-mode non-planar rain-wind-induced vibrations of stay cables: Scruton number threshold and optimal damper design 斜拉索多模态非平面风雨振动抑制：斯克鲁顿数阈值与最优阻尼器设计

IF 4.9 2区工程技术

Journal of Wind Engineering and Industrial Aerodynamics Pub Date : 2025-08-04 DOI: 10.1016/j.jweia.2025.106196

Zhiwen Liu , Ruilin Zhang , Shuai Zhou , Chao He , Lei Zeng , Yuanying Meng , Zhengqing Chen

{"title":"Suppression of multi-mode non-planar rain-wind-induced vibrations of stay cables: Scruton number threshold and optimal damper design","authors":"Zhiwen Liu , Ruilin Zhang , Shuai Zhou , Chao He , Lei Zeng , Yuanying Meng , Zhengqing Chen","doi":"10.1016/j.jweia.2025.106196","DOIUrl":"10.1016/j.jweia.2025.106196","url":null,"abstract":"<div><div>Suppressing cable vibrations should address energy dissipation by dampers and energy input from the air. In this study, a methodology framework is proposed to efficiently suppress wind-induced cable vibrations with dampers. In this framework, the Scruton number (Sc) threshold is clarified by identifying amplitude-dependent aerodynamic damping in on-site environments; on this basis, the damper is optimized by solving eigenfrequencies of the cable-damper system with a multi-objective genetic algorithm. This framework is applied to deal with the multi-mode non-planar rain-wind-induced vibrations (RWIV) of an ultra-long stay cable on the Sutong Bridge. Firstly, two typical RWIV events observed during one-year field monitoring are reported through the evolution analysis of decomposed modal responses. Then, a scheme of bi-directional viscous dampers combined with a high-damping rubber (HDR) damper, as optimized in location and size, is implemented to mitigate the vibrations. The results suggest a tentative threshold of Sc > 12.5 for both in-plane and out-of-plane modes within the frequency range of 1.9–3.6 Hz to prevent the RWIVs of the cable. The effectiveness of the optimized dampers in mitigating the RWIVs is demonstrated through on-site monitoring.</div></div>","PeriodicalId":54752,"journal":{"name":"Journal of Wind Engineering and Industrial Aerodynamics","volume":"265 ","pages":"Article 106196"},"PeriodicalIF":4.9,"publicationDate":"2025-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144766439","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

Sensitivity analysis of the geometrical simplification of an intercity train entering a tunnel 城际列车进入隧道几何简化的敏感性分析

IF 4.9 2区工程技术

Journal of Wind Engineering and Industrial Aerodynamics Pub Date : 2025-08-03 DOI: 10.1016/j.jweia.2025.106192

J. García , J. Munoz-Paniagua , J. Garay

{"title":"Sensitivity analysis of the geometrical simplification of an intercity train entering a tunnel","authors":"J. García , J. Munoz-Paniagua , J. Garay","doi":"10.1016/j.jweia.2025.106192","DOIUrl":"10.1016/j.jweia.2025.106192","url":null,"abstract":"<div><div>This paper presents a study of several levels of simplification of the geometrical features of the locomotive unit, in good agreement with these proposed in the European standards, in order to study the sensitivity of the compression wave profile and the pressure gradient measured at the tunnel entrance. The European standards permits in computational fluid dynamic studies the simplification of the bogies while other aerodynamically significant features shall be modeled in detail. Here the snowplow, the coupler elements and the bogies are studied to determine the influence of each element on the compression wave and the maximum pressure gradient of a intercity train entering into a tunnel. It is observed that the coupler introduces a delay in the pressure rise measured at the tunnel walls when the train nose is entering. The snowplow introduces a flow detachment that increases the effective cross-sectional area of the train, and so increases the pressure rise. The removal of the bogies clearly modifies the train head cross-sectional area, so its substitution by a dummy box provokes an increase in the pressure rise that approximates the maximum pressure gradient to that obtained from the full-detailed case.</div></div>","PeriodicalId":54752,"journal":{"name":"Journal of Wind Engineering and Industrial Aerodynamics","volume":"265 ","pages":"Article 106192"},"PeriodicalIF":4.9,"publicationDate":"2025-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144764003","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

Influence of incoming turbulence on aerodynamic forces of a high-speed train 来流湍流对高速列车气动力的影响

IF 4.9 2区工程技术

Journal of Wind Engineering and Industrial Aerodynamics Pub Date : 2025-08-01 DOI: 10.1016/j.jweia.2025.106184

Huanxia Wei , Chao Xia , Qing Jia , Simone Sebben , Zhigang Yang

{"title":"Influence of incoming turbulence on aerodynamic forces of a high-speed train","authors":"Huanxia Wei , Chao Xia , Qing Jia , Simone Sebben , Zhigang Yang","doi":"10.1016/j.jweia.2025.106184","DOIUrl":"10.1016/j.jweia.2025.106184","url":null,"abstract":"<div><div>The influence of incoming turbulence on the aerodynamics of a high-speed train is numerically investigated using the Improved Delayed Detached Eddy Simulation (IDDES) combined with Synthetic Turbulence Generation (STG). The results reveal that increasing turbulence intensity significantly enhances the drag and lift coefficients of the train, with the rate of increase amplifying as the turbulence length scale grows. The incoming turbulence induces effects analogous to crosswind conditions, weakening the aerodynamic impact on the head carriage while accelerating airflow around the curved sections of the tail carriage. Moreover, the turbulent kinetic energy within the shear layers adjacent to the bogie cavity increases with turbulence intensity, facilitating enhanced flow ingress into the cavity and intensifying interactions with the bogie and cavity structures, thereby augmenting both drag and lift. Additionally, the presence of incoming turbulence produces a thinner boundary layer, characterized by a reduced shape factor and elevated viscous drag. Specifically, higher turbulence intensity leads to a smaller shape factor and a steeper velocity gradient, thereby increasing viscous drag. In contrast, larger turbulence length scales exhibit the opposite trend, manifesting as a decrease in viscous drag.</div></div>","PeriodicalId":54752,"journal":{"name":"Journal of Wind Engineering and Industrial Aerodynamics","volume":"265 ","pages":"Article 106184"},"PeriodicalIF":4.9,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144750289","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

Probabilistic model for multivariate non-stationary/non-Gaussian wind loads on the roof structure and potential engineering applications 屋面结构多变量非平稳/非高斯风荷载的概率模型及其潜在的工程应用

IF 4.9 2区工程技术

Journal of Wind Engineering and Industrial Aerodynamics Pub Date : 2025-08-01 DOI: 10.1016/j.jweia.2025.106187

Bingchang Cui , Peng Huang , Guozhong Wang

{"title":"Probabilistic model for multivariate non-stationary/non-Gaussian wind loads on the roof structure and potential engineering applications","authors":"Bingchang Cui , Peng Huang , Guozhong Wang","doi":"10.1016/j.jweia.2025.106187","DOIUrl":"10.1016/j.jweia.2025.106187","url":null,"abstract":"<div><div>The wind load field on the building surface under extreme winds contains multivariate non-stationary/non-Gaussian components, which is the direct reason for wind-induced structural destruction. Then, the probabilistic model for multivariate non-stationary/non-Gaussian multivariate wind loads is proposed. The mixture Gaussian distribution model and the appropriate copula are used to fit the marginal distribution and establish the dependence structures, respectively. Compared with the classical distribution model, the mixture Gaussian distribution model exhibits superior goodness of fitting, reducing the A-D values by 70 % and K-S values by 50 %. For selecting the optimal copula, plotting the frequency distribution histogram, and comparing the two tail dependence coefficients, the Chi-plotting method, the Akaike information criterion, and Bayesian information criterion principles are used. Based on the field measurement data under typhoon climate, the non-stationarity on the leeward side is stronger than that on the windward side. In determining the window length for non-stationary multivariate wind loads, the time-varying statistics are regarded as quantitative evaluation criteria, and the slope difference from the change point theory is used to identify the precise boundary point between different segments. For the synchronous multivariate non-stationary wind loads, the time-varying single copula model with evolutionary parameters and evolutionary multi-copula functions model with time are employed. The symmetrized Joe-Clayton copula model is applied in the probabilistic modeling of multivariate wind load fields on the corner region during the high wind speed interval of one typhoon.</div></div>","PeriodicalId":54752,"journal":{"name":"Journal of Wind Engineering and Industrial Aerodynamics","volume":"265 ","pages":"Article 106187"},"PeriodicalIF":4.9,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144750290","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