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

Comparative analysis of crosswind influence on aerodynamic characteristics of superconducting and normal-conducting high-speed maglev trains 侧风对超导与正导高速磁悬浮列车气动特性影响的对比分析

IF 4.9 2区工程技术

Journal of Wind Engineering and Industrial Aerodynamics Pub Date : 2025-07-31 DOI: 10.1016/j.jweia.2025.106182

Lei Zhang , Yue Gao , Tong-tong Lin , Tian-tian Wang , Ming-zhi Yang , Dong-run Liu

{"title":"Comparative analysis of crosswind influence on aerodynamic characteristics of superconducting and normal-conducting high-speed maglev trains","authors":"Lei Zhang , Yue Gao , Tong-tong Lin , Tian-tian Wang , Ming-zhi Yang , Dong-run Liu","doi":"10.1016/j.jweia.2025.106182","DOIUrl":"10.1016/j.jweia.2025.106182","url":null,"abstract":"<div><div>The development and construction of high-speed maglev systems with design speeds of up to 600 km/h have been initiated worldwide for faster and safer travel. Maglev train systems are divided into normal conducting maglev trains (NCMTs) and superconducting maglev trains (SMTs). NCMT operates on track beams, whereas the SMT operates in track slots, leading to substantial differences in the aerodynamic properties of high-speed maglev trains under crosswind conditions. This study investigated the flow field characteristics around maglev trains with different levitation methods under crosswind conditions and compared the differences in the flow field characteristics between the two levitation methods. The results showed that, as the crosswind speed increases, the crosswind effect intensifies, leading to a deterioration in the train flow filed, manifested as increased flow field asymmetry and enhanced vortex structures around the train. Compared to the NCMT, the crosswind exerts a relatively minor influence on vortex development in an SMT. The NCMT has more significant aerodynamic and slipstream effects than the SMT because of its track structure, and the SMT has less side force than the NCMT.</div></div>","PeriodicalId":54752,"journal":{"name":"Journal of Wind Engineering and Industrial Aerodynamics","volume":"265 ","pages":"Article 106182"},"PeriodicalIF":4.9,"publicationDate":"2025-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144739653","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

Vortex-induced vibration mitigation in long-span bridges using a nonlinear energy sink inerter: Theoretical framework and application 基于非线性能量汇的大跨度桥梁涡激振动抑制：理论框架与应用

IF 4.9 2区工程技术

Journal of Wind Engineering and Industrial Aerodynamics Pub Date : 2025-07-31 DOI: 10.1016/j.jweia.2025.106193

Ruihong Xie , Kun Xu , Peng Liu , Zilong Wang , Lin Zhao

{"title":"Vortex-induced vibration mitigation in long-span bridges using a nonlinear energy sink inerter: Theoretical framework and application","authors":"Ruihong Xie , Kun Xu , Peng Liu , Zilong Wang , Lin Zhao","doi":"10.1016/j.jweia.2025.106193","DOIUrl":"10.1016/j.jweia.2025.106193","url":null,"abstract":"<div><div>Long-span bridges, with their exceptionally low modal frequencies, are prone to wind-induced vibrations, notably vortex-induced vibrations (VIVs). Conventional linear dynamic vibration absorbers like tuned mass dampers (TMDs), and nonlinear dynamic absorbers such as nonlinear energy sinks (NESs), often struggle to mitigate VIV effectively at low frequencies due to excessive static displacements and limited achievable mass ratios. To overcome these challenges, this study proposed a novel vibration control device—a quasi-zero-stiffness nonlinear energy sink inerter (QZS-NESI). By introducing a positive linear stiffness component, the QZS-NESI achieves a quasi-zero stiffness configuration that compensates for static loads while maintaining low restoring forces. Meanwhile, the inclusion of the inerter provides a mass amplification effect, effectively reducing the static displacement requirement. The complexification-averaging (CX-A) technique was used to obtain the slow-flow dynamic model and steady-state dynamic model of the original system, which approximated by the CX-A method has been demonstrated to possess accuracy comparable to that of the original system. Moreover, this method enabled the direct determination of the steady-state amplitude and phase difference of the dynamic system, thereby elucidating the bifurcation structure of the system under varying parameters. The mechanical damping and VIV-related aerodynamic damping were identified as critical parameters significantly influencing the emergence of unstable branches. The Xihoumen Bridge, with a main span of 1650 m, was chosen as the reference bridge to evaluate the VIV control efficacy of the NESI system. Findings underscored the exceptional capacity of NESI for displacement reduction and broadband vibration mitigation.</div></div>","PeriodicalId":54752,"journal":{"name":"Journal of Wind Engineering and Industrial Aerodynamics","volume":"265 ","pages":"Article 106193"},"PeriodicalIF":4.9,"publicationDate":"2025-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144739652","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

Investigation of the link between vehicle underbody and base unsteady wake aerodynamics 飞行器底面与基座非定常尾迹空气动力学关系的研究

IF 4.9 2区工程技术

Journal of Wind Engineering and Industrial Aerodynamics Pub Date : 2025-07-30 DOI: 10.1016/j.jweia.2025.106177

C. Wallace , A. Garmory , A. Gaylard , D. Butcher

{"title":"Investigation of the link between vehicle underbody and base unsteady wake aerodynamics","authors":"C. Wallace , A. Garmory , A. Gaylard , D. Butcher","doi":"10.1016/j.jweia.2025.106177","DOIUrl":"10.1016/j.jweia.2025.106177","url":null,"abstract":"<div><div>The unsteady flow around a squareback automotive body at <span><math><mrow><mi>R</mi><msub><mrow><mi>e</mi></mrow><mrow><mi>h</mi></mrow></msub></mrow></math></span> of approximately <span><math><mrow><mn>7</mn><mo>.</mo><mn>4</mn><mo>×</mo><mn>1</mn><msup><mrow><mn>0</mn></mrow><mrow><mn>5</mn></mrow></msup></mrow></math></span> is investigated using a Large Eddy Simulation. The study is conducted with rotating wheels and a moving ground plane and is shown to be in strong agreement with the mean flow fields of similar experimental datasets. Proper Orthogonal Decomposition, Spectral Proper Orthogonal Decomposition, and spectral analysis of the time-resolved pressure fields on the model surfaces are used to reveal spatial and temporal interactions in the wake and underbody flow. The salient underbody flow features determined are lateral and streamwise motions between the rear wheels and a more complex shedding interaction from the front wheels. The rear wake exhibits a dominant lateral flapping motion and is shown to correlate to an underbody lateral mode. This is further seen through conditional averaging of the underbody and rear wake structures, showing a concurrent lateral bias. This study demonstrates a link between rear-wheel-to-base unsteady flow features, highlighting the importance of considering these interactions in future vehicle aerodynamic studies.</div></div>","PeriodicalId":54752,"journal":{"name":"Journal of Wind Engineering and Industrial Aerodynamics","volume":"265 ","pages":"Article 106177"},"PeriodicalIF":4.9,"publicationDate":"2025-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144722923","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

Blended inflow boundary conditions: Addressing the displacement height in differing inertial and roughness sub-layer flows for urban areas 混合流入边界条件：解决城市地区不同惯性和粗糙子层流的位移高度

IF 4.9 2区工程技术

Journal of Wind Engineering and Industrial Aerodynamics Pub Date : 2025-07-30 DOI: 10.1016/j.jweia.2025.106191

Oliver S. Carlo , Mingjie Zhang , Riccardo Buccolieri

{"title":"Blended inflow boundary conditions: Addressing the displacement height in differing inertial and roughness sub-layer flows for urban areas","authors":"Oliver S. Carlo , Mingjie Zhang , Riccardo Buccolieri","doi":"10.1016/j.jweia.2025.106191","DOIUrl":"10.1016/j.jweia.2025.106191","url":null,"abstract":"<div><div>Accurately modelling urban airflow and pollutant dispersion requires inlet boundary conditions that reflect the complexity of urban roughness and its influence on the urban boundary layer (UBL). This study evaluates four computation fluid dynamics (CFD) inflow scenarios, focusing on improving the modelling of velocity and turbulence kinetic energy (TKE) profiles in urban environments using the Standard <span><math><mrow><mi>k</mi><mo>−</mo><mi>ε</mi></mrow></math></span> (SKE) turbulence model. Particular emphasis is placed on incorporating the displacement height and differentiating between the roughness sub-layer (RSL) and inertial sub-layer (ISL) regions.</div><div>A novel blended inlet profile is proposed to bridge existing gaps in UBL modelling. It enables better alignment of flow profiles with experimental data while addressing the transition between the RSL and ISL. Statistical evaluations demonstrate that the blended approach offers improved performance and consistency across the CFD domain.</div><div>The results highlight the critical role of accurate inflow conditions in street-scale analyses, where pollutant concentrations are highly sensitive to velocity and TKE profiles. The findings underscore the potential of the blended formulation provides as a robust method for modelling complex urban environments, adaptable to different turbulence models and varying morphometric features such as building height variability and density.</div></div>","PeriodicalId":54752,"journal":{"name":"Journal of Wind Engineering and Industrial Aerodynamics","volume":"265 ","pages":"Article 106191"},"PeriodicalIF":4.9,"publicationDate":"2025-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144739682","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

Aeroelastic simulation of torsional vibrations in a single-axis solar tracker 单轴太阳跟踪器扭转振动的气动弹性模拟

IF 4.9 2区工程技术

Journal of Wind Engineering and Industrial Aerodynamics Pub Date : 2025-07-28 DOI: 10.1016/j.jweia.2025.106190

Pedro M. Brito , Almerindo D. Ferreira , Antonio C.M. Sousa

{"title":"Aeroelastic simulation of torsional vibrations in a single-axis solar tracker","authors":"Pedro M. Brito , Almerindo D. Ferreira , Antonio C.M. Sousa","doi":"10.1016/j.jweia.2025.106190","DOIUrl":"10.1016/j.jweia.2025.106190","url":null,"abstract":"<div><div>Wind-induced torsional vibrations in a single-axis solar tracker (SAST) are simulated by coupling a structural displacement solver with delayed-detached eddy simulation (DDES) of the turbulent crossflow. The resulting amplitude-frequency response is reported across an operational range of reduced wind velocities at various orientations. This investigation aims to offer a cost-effective, agile alternative to wind-tunnel testing for SAST development. Based on validated fluid-elastic modeling practices, the work focuses on predicting the torsional galloping instability, as observed in earlier experimental research. The solutions confirm the onset of torsional instability for certain SAST orientations at critical reduced velocities in agreement with peer measurements. Moreover, two markedly different aeroelastic behaviours are categorized, labelled as the vortex-asynchronous and vortex-synchronous vibration regimes. Spectral analysis reveals that self-excited vibration is triggered by synchronization between the frequencies of vortex shedding and torsional vibration. The normalized work performed on the structure is computed, demonstrating a net energy influx per cycle from flow to structure during the galloping phenomenon. Ultimately, the adopted methodology serves as a viable and inexpensive test bed for the expedite prediction of aeroelastic response in SASTs. The automated control of design parameters and rapid computational turnaround can significantly streamline the wind design of open solar structures.</div></div>","PeriodicalId":54752,"journal":{"name":"Journal of Wind Engineering and Industrial Aerodynamics","volume":"265 ","pages":"Article 106190"},"PeriodicalIF":4.9,"publicationDate":"2025-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144722137","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

Experimental study on flow-induced vibration of flexible twin cylinders and its suppression using passive-suction-jet control 柔性双气缸流激振动及被动吸喷控制抑制实验研究

IF 4.2 2区工程技术

Journal of Wind Engineering and Industrial Aerodynamics Pub Date : 2025-07-26 DOI: 10.1016/j.jweia.2025.106186

Yan-Jiao Guo , Ye-Wei Huang , Xiang-Wei Min , Wen-Li Chen

{"title":"Experimental study on flow-induced vibration of flexible twin cylinders and its suppression using passive-suction-jet control","authors":"Yan-Jiao Guo , Ye-Wei Huang , Xiang-Wei Min , Wen-Li Chen","doi":"10.1016/j.jweia.2025.106186","DOIUrl":"10.1016/j.jweia.2025.106186","url":null,"abstract":"<div><div>This study experimentally investigates interference-induced vibrations between flexible twin cylinders in nine staggered arrangements with <em>L</em>/<em>D</em> = 3, 4, 5 and <em>T</em>/<em>D</em> = 0, 1, 2 combinations. Dominant vibration modes, phase differences, and frequency characteristics were analyzed, along with the validation of a passive-suction-jet control method. At high wind speeds, besides higher-order vortex-induced vibration (VIV), three types of large-amplitude vibration were identified: wake-induced vibration (WIV), wake-induced flutter (WIF), and LSTR (laminar separation and turbulent reattachment) flow pattern-induced horizontal vibration (LHV)—the latter being observed for the first time in flexible experiments. During LHV, the downstream cylinder exhibited first-mode dominated horizontal motion while its vertical motion was characterized by higher-order modes, with poor coherence between the cylinders. The frequency-locking phenomenon was observed in both WIF and WIV, and proved essential for WIF occurrence. At close spacing, the cylinders primarily displayed vertical approximately anti-phase VIV, which was caused by shear layer interactions. The optimal control scheme, which employs pipe installations of 3/4 span length, effectively suppresses all three large-amplitude vibration types and mitigates various orders of VIV (except for anti-phase VIV in tandem arrangements).</div></div>","PeriodicalId":54752,"journal":{"name":"Journal of Wind Engineering and Industrial Aerodynamics","volume":"265 ","pages":"Article 106186"},"PeriodicalIF":4.2,"publicationDate":"2025-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144704457","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

Investigation on effectively suppressing sunroof wind buffeting noise through utilizing vortex-based energy characteristics 利用涡能量特性有效抑制天窗风抖振噪声的研究

IF 4.2 2区工程技术

Journal of Wind Engineering and Industrial Aerodynamics Pub Date : 2025-07-25 DOI: 10.1016/j.jweia.2025.106189

Sishi Cao , Zhifei Zhang , Huili Yu , Zhiming Zhao , Yansong He

{"title":"Investigation on effectively suppressing sunroof wind buffeting noise through utilizing vortex-based energy characteristics","authors":"Sishi Cao , Zhifei Zhang , Huili Yu , Zhiming Zhao , Yansong He","doi":"10.1016/j.jweia.2025.106189","DOIUrl":"10.1016/j.jweia.2025.106189","url":null,"abstract":"<div><div>Through dynamic mode decomposition (DMD), it is discovered that the significant pressure fluctuations between the center and trailing edge of the sunroof are caused by the vortices expanding and pushing against each other. To effectively improve the squeezing state of vortices within the sunroof, an effective method for suppressing wind buffeting noise has been proposed via precisely arranging the crossbar positions. Specifically, a cylindrical transverse rod is placed at the position where the velocity diffusion term of the first-order mode is minimized, and it is also aligned with the movement trajectory of the vortex. The results of numerical simulations demonstrate that this method achieves noise reduction of more than 14.2 dB. To further explore the modal characteristics of this scheme, the main pressure and velocity fluctuations associated with wind buffeting noise are extracted via DMD, and the modal characteristics of the original scheme and this scheme are compared and analyzed. The results show that the proposed crossbar scheme based on DMD is highly effective in mitigating pressure and velocity fluctuations. The transverse rod is able to effectively disrupt vortices and pressure clusters within the sunroof, leading to a suppression of the prominent resonance peak. By improving the squeezing state between vortices, velocity and pressure fluctuations are subsequently reduced. Compared to the original scheme, the crossbar scheme exhibits more vortices in each dynamic mode, the vortices and pressure clusters of each order dynamic mode have inconsistent streamwise evolutions, thereby suppressing the formation of large single-core vortex and pressure cluster. This is advantageous for suppressing wind buffeting noise.</div></div>","PeriodicalId":54752,"journal":{"name":"Journal of Wind Engineering and Industrial Aerodynamics","volume":"265 ","pages":"Article 106189"},"PeriodicalIF":4.2,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144703847","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

Transformer-based full-track simulation of tropical cyclones 基于变压器的热带气旋全轨迹模拟

IF 4.2 2区工程技术

Journal of Wind Engineering and Industrial Aerodynamics Pub Date : 2025-07-25 DOI: 10.1016/j.jweia.2025.106176

Biao Tong , Gang Hu , Zhongdong Duan

{"title":"Transformer-based full-track simulation of tropical cyclones","authors":"Biao Tong , Gang Hu , Zhongdong Duan","doi":"10.1016/j.jweia.2025.106176","DOIUrl":"10.1016/j.jweia.2025.106176","url":null,"abstract":"<div><div>Full-track simulation of tropical cyclones (TCs) is the most widely adopted approach to estimate wind speeds for structure design and TC hazard assessment. This study presents two Transformer-based models, TCformer and eTCformer, for TC full-track simulation. TCformer is designed to directly simulate the entire TC track, aligning with the statistical approach, while eTCformer incorporates large-scale environmental factors such as wind velocity components and vertical wind shear into the Transformer framework, corresponding to the statistical-dynamical approach. The primary advantages of the two DL models lie in their efficiency and flexibility, particularly their ability to capture complex nonlinear interactions among arbitrary variables. Comparative analysis demonstrates that Transformer-based models outperform traditional methods across multiple metrics, exhibiting enhanced robustness and better preservation of spatial correlation patterns, especially in intensity simulations. Furthermore, the accuracy of virtual TC landfall simulations and their evaluated impacts on key coastal cities also underscores the Transformer-based models potential to advance typhoon risk analysis. Overall, the proposed models demonstrate potential as robust tools for reliable TC sample modeling, as well as enhanced understanding of behavioral patterns and improved assessment of both climate change impacts and disaster risks.</div></div>","PeriodicalId":54752,"journal":{"name":"Journal of Wind Engineering and Industrial Aerodynamics","volume":"265 ","pages":"Article 106176"},"PeriodicalIF":4.2,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144703952","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

Performance assessment of deep learning models for reconstructing missing pressure data on the high-speed train from wind tunnel tests 风洞试验中高速列车缺失压力数据重建的深度学习模型性能评估

IF 4.2 2区工程技术

Journal of Wind Engineering and Industrial Aerodynamics Pub Date : 2025-07-25 DOI: 10.1016/j.jweia.2025.106185

Zheng-Wei Chen, Zhan-hao Guo, Jia-Hao Lu, Cheng Peng, Guang-Zhi Zeng, Zi-Jian Guo

{"title":"Performance assessment of deep learning models for reconstructing missing pressure data on the high-speed train from wind tunnel tests","authors":"Zheng-Wei Chen, Zhan-hao Guo, Jia-Hao Lu, Cheng Peng, Guang-Zhi Zeng, Zi-Jian Guo","doi":"10.1016/j.jweia.2025.106185","DOIUrl":"10.1016/j.jweia.2025.106185","url":null,"abstract":"<div><div>Missing pressure data frequently occurs in surface pressure distribution tests. Traditional methods, including mean, median, or regression imputation, rely on statistical measures or relationships to fill missing values. Comparatively, deep learning offers innovative approaches through autoencoders or generative adversarial networks, which can learn dataset patterns and generate plausible data, thereby enhancing completeness. Relying on pressure measurements from wind tunnel experiments, with inflow speeds varying between 2 and 18 m/s, this paper analyzes the train surface pressure distribution and explores deep learning-based reconstruction for missing data. Results show that as wind speeds increase, absolute pressure values rise proportionally, while distribution patterns remain consistent with prior findings. Moreover, deep learning models exhibit notable reconstruction performance, albeit with differing accuracies. Specifically, the Kolmogorov-Arnold Network achieves the highest precision, recording a 3.26 % average error, followed by the Multilayer Perceptron (7.08 %) and the Long Short-Term Memory network (8.90 %). Such discrepancies underscore the unique capabilities and limitations of each model. These findings demonstrate the efficacy of deep learning techniques in recovering missing pressure data and highlight their potential to augment wind tunnel datasets, ultimately offering a valuable reference for future investigations seeking to address data gaps in aerodynamic research and strengthen data-driven analyses and engineering practice.</div></div>","PeriodicalId":54752,"journal":{"name":"Journal of Wind Engineering and Industrial Aerodynamics","volume":"265 ","pages":"Article 106185"},"PeriodicalIF":4.2,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144704458","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

Effects of façade and rooftop greening on the surface pressure distribution of an isolated cubic building with side wall apertures 立面和屋顶绿化对带侧壁开孔的孤立立方体建筑表面压力分布的影响

IF 4.2 2区工程技术

Journal of Wind Engineering and Industrial Aerodynamics Pub Date : 2025-07-23 DOI: 10.1016/j.jweia.2025.106174

Vasiliki Pappa , Asterios Bakolas , Demetri Bouris , Christof Gromke

{"title":"Effects of façade and rooftop greening on the surface pressure distribution of an isolated cubic building with side wall apertures","authors":"Vasiliki Pappa , Asterios Bakolas , Demetri Bouris , Christof Gromke","doi":"10.1016/j.jweia.2025.106174","DOIUrl":"10.1016/j.jweia.2025.106174","url":null,"abstract":"<div><div>Greening is considered a sustainable and environmentally friendly policy for urban development but despite the progress made so far, the aerodynamic implications of building embedded greening have yet to be determined. Greening may have a variety of implications on wind loads, natural ventilation and air exchange, all related to the pressure distribution on buildings’ external surfaces. In the present study, a wind tunnel investigation deals with the qualitative and quantitative effects of building greening on the external surface pressure distribution of a model building. Greening was considered to fully cover the external windward façade and the roof under various permeabilities and thicknesses. Openings on the side walls allow for indoor–outdoor air exchange. The position and the thickness of greening were found to be decisive parameters for the overall pressure distribution but attention was also directed towards the fluctuating pressures near the openings, which are expected to be the driving mechanism for air exchange in this configuration. Effects of rooftop greening were confined mainly to the roof and the wake but for windward façade greening, mean and fluctuating pressure differences of up to 35%, compared to the bare building, were observed in the vicinity of the openings. The major effect was a damping of the lower frequencies of pressure fluctuations and it had a stronger dependence on the thickness rather than the material properties of the windward façade greening.</div></div>","PeriodicalId":54752,"journal":{"name":"Journal of Wind Engineering and Industrial Aerodynamics","volume":"265 ","pages":"Article 106174"},"PeriodicalIF":4.2,"publicationDate":"2025-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144686009","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