Journal of Wind Engineering and Industrial Aerodynamics最新文献_第7页

CFD simulations of running aerodynamics: Impact of computational parameters 运行空气动力学的CFD模拟：计算参数的影响

IF 4.9 2区工程技术 Q1 ENGINEERING, CIVIL

Journal of Wind Engineering and Industrial Aerodynamics

Pub Date : 2025-11-10 DOI: 10.1016/j.jweia.2025.106271

Xiaoqi Hu, Fabio Malizia, Bert Blocken

Running is a fundamental discipline in athletics, yet its aerodynamic characteristics have not yet been intensively studied, particularly from a computational perspective. In recent years, Computational Fluid Dynamics (CFD) has become an increasingly valuable tool for advancing research in sports aerodynamics. However, the reliability of CFD predictions depends strongly on the selection of computational parameters which remains insufficiently explored in the context of human running. This paper presents a detailed study on the impact of grid resolution, computational domain size, and turbulence modelling on the computed drag area for a full-scale female runner manikin. The CFD simulations are validated by comparison with wind tunnel measurements performed in a geometrically matched test section. The sensitivity analysis provides practical guidelines for generating grids that balance accuracy and computational economy. The blockage ratio (BR) is found to be a critical parameter: values exceeding 3.5% result in drag overestimations larger than 2.8%. Among the turbulence models tested, transition-sensitive models (γ–SST and T–SST) in pseudo-transient RANS formulation and the hybrid scale-adaptive simulation (SAS) approach showed the best agreement with experimental results. Based on these findings, the study proposes a set of best-practice guidelines for reliable and cost-effective CFD simulations of running aerodynamics.

跑步是田径运动中的一项基本学科，但其空气动力学特性尚未得到深入研究，特别是从计算的角度来看。近年来，计算流体动力学（CFD）已成为推进运动空气动力学研究的一个越来越有价值的工具。然而，CFD预测的可靠性很大程度上取决于计算参数的选择，而在人类运行的背景下，这方面的研究还不够充分。本文详细研究了网格分辨率、计算域大小和湍流建模对全尺寸女性跑步人体模型计算阻力面积的影响。通过与几何匹配试验段风洞测量结果的对比，验证了CFD模拟的有效性。灵敏度分析为平衡网格的精度和计算经济性提供了实用的指导。发现堵塞比（BR）是一个关键参数：超过3.5%的值导致阻力高估大于2.8%。在测试的湍流模型中，伪瞬态RANS公式中的过渡敏感模型（γ-SST和T-SST）和混合尺度自适应模拟（SAS）方法与实验结果最吻合。基于这些发现，该研究提出了一套最佳实践指南，用于可靠且经济高效的运行空气动力学CFD模拟。

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引用次数: 0

A physics-informed deep learning framework for the tropical cyclones decay model 热带气旋衰变模型的物理信息深度学习框架

IF 4.9 2区工程技术 Q1 ENGINEERING, CIVIL

Journal of Wind Engineering and Industrial Aerodynamics

Pub Date : 2025-11-06 DOI: 10.1016/j.jweia.2025.106263

Biao Tong , Jian Yang , Zhongdong Duan , Gang Hu

Accurate modeling of tropical cyclone (TC) decay after landfall is critical for effective hazard assessment and disaster mitigation in coastal regions. This study introduces a physics-informed deep learning framework based on the Extended Long Short-Term Memory (xLSTM) network to predict TC decay processes over mainland East and Southeast Asia. The proposed xLSTM model incorporates both empirical and physical constraints, leveraging multi-source observational and environmental reanalysis data. Compared with established empirical models, xLSTM demonstrates superior predictive performance, achieving lower error, as well as higher correlation with observed data. Spatial and temporal analyses reveal that the xLSTM framework reduces regional biases and more accurately captures complex decay dynamics, especially for the mid-to-late stages of landfall forecasts. Gradient-based sensitivity analysis identifies initial wind speed, time since landfall, land-sea mask, and land cover characteristics as the dominant factors influencing TC intensity decay. These findings highlight the advantages of integrating physics-informed constraints within deep learning models for improved representation and prediction of TC decay, supporting enhanced risk assessment and operational forecasting for coastal hazard management.

准确模拟热带气旋登陆后的衰减对沿海地区进行有效的危害评估和减灾至关重要。本研究介绍了一个基于扩展长短期记忆（xLSTM）网络的物理信息深度学习框架，以预测东亚大陆和东南亚的TC衰减过程。提出的xLSTM模型结合了经验和物理约束，利用了多源观测和环境再分析数据。与已建立的经验模型相比，xLSTM具有更好的预测性能，误差更小，与观测数据的相关性更高。时空分析表明，xLSTM框架减少了区域偏差，更准确地捕捉了复杂的衰减动态，特别是在登陆预报的中后期阶段。基于梯度的敏感性分析表明，初始风速、登陆时间、陆-海掩模和土地覆盖特征是影响TC强度衰减的主要因素。这些发现强调了在深度学习模型中集成物理信息约束的优势，以改进TC衰变的表示和预测，支持加强沿海灾害管理的风险评估和业务预测。

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引用次数: 0

Correction of coupled aerodynamic loads in high-frequency force-balance testing using a Bayesian approach 用贝叶斯方法校正高频力平衡试验中耦合气动载荷

IF 4.9 2区工程技术 Q1 ENGINEERING, CIVIL

Journal of Wind Engineering and Industrial Aerodynamics

Pub Date : 2025-11-05 DOI: 10.1016/j.jweia.2025.106268

Haoran Pan , Zuo Zhu , An Xu

High-frequency force-balance testing is one of the most practical approaches for evaluating wind loads and wind-induced responses on high-rise buildings in wind tunnels. However, the method is susceptible to measurement bias caused by resonant amplification and modal coupling between the balance and the structural model. Traditional correction methods partly mitigate resonant amplification but remain limited under modal coupling, particularly in cases of closely spaced modes. This study presents a physically grounded correction framework based on Bayesian operational modal analysis, which incorporates the coupled dynamic characteristics of the balance-model system (BMS) into a Bayesian inference scheme, enabling statistically consistent and physically interpretable identification of its modal characteristics. By leveraging the identified modal parameters of the BMS, the method decouples aerodynamic loads, suppresses dynamic amplification, and reconstructs bias-reduced aerodynamic load spectra. Numerical simulations demonstrate the robustness of the method under varying modal proximity and coupling, while wind-tunnel experiments on a supertall building model further validate its effectiveness. The results highlight the potential of the proposed framework to improve aerodynamic-load correction and structural-response prediction in wind-tunnel testing.

高频力平衡试验是评价风洞高层建筑风荷载和风致响应最实用的方法之一。然而，由于天平与结构模型之间的谐振放大和模态耦合，该方法容易产生测量偏差。传统的校正方法在一定程度上减轻了谐振放大，但在模态耦合下仍然有限，特别是在模态紧密间隔的情况下。本研究提出了一个基于贝叶斯操作模态分析的物理接地校正框架，该框架将平衡模型系统（BMS）的耦合动态特性纳入贝叶斯推理方案，使其模态特性的识别具有统计一致性和物理可解释性。该方法利用已识别的BMS模态参数，对气动载荷进行解耦，抑制动力放大，重建减偏气动载荷谱。数值仿真验证了该方法在变模态接近和耦合条件下的鲁棒性，超高层建筑模型风洞试验进一步验证了该方法的有效性。结果表明，该框架在改善风洞试验中的空气动力载荷校正和结构响应预测方面具有很大的潜力。

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引用次数: 0

Predicting wind-induced interference effects on a low-rise building in a realistic urban area using large-eddy simulations 用大涡模拟方法预测现实城区低层建筑的风致干扰效应

IF 4.9 2区工程技术 Q1 ENGINEERING, CIVIL

Journal of Wind Engineering and Industrial Aerodynamics

Pub Date : 2025-11-04 DOI: 10.1016/j.jweia.2025.106270

Themistoklis Vargiemezis, Catherine Gorlé

This paper validates Large Eddy Simulation (LES) for predicting wind-induced pressures on low-rise buildings in urban areas. Validation data for pressure coefficients on the building was obtained from experiments on a 1:100 scale model of Stanford’s Y2E2 building in the NHERI Wall of Wind (WoW) facility at Florida International University, and simulations were conducted using the CharLES code. The study first ensured an accurate representation of WoW surface layer velocity statistics in the LES. Next, simulations of the surface layer wind flow interacting with the buildings showed a close agreement between LES and wind tunnel data for wind pressure coefficient statistics (mean, RMS, peak, skewness, kurtosis) on the building surface. The LES can accurately identify areas where surrounding buildings create more negative peak pressure coefficients than would occur on the isolated building. The changes in the peak pressure coefficients were found to be induced by changes in the mean flow velocity magnitude and direction, including new regions of flow separation, acceleration, and vortex formation. In conclusion, LES is a valuable tool for analyzing wind pressures on realistic low-rise buildings in complex urban environments, offering reliable estimates for local peak pressure coefficients and insight into the flow physics causing these peaks.

本文对大涡模拟（LES）在城市低层建筑风致压力预测中的应用进行了验证。建筑物上的压力系数验证数据来自佛罗里达国际大学NHERI风墙（WoW）设施中斯坦福Y2E2建筑1:100比例模型的实验，并使用CharLES代码进行了模拟。该研究首先确保了在LES中准确表示WoW表层速度统计。其次，对地面气流与建筑物相互作用的模拟表明，LES和风洞数据在建筑物表面的风压系数统计（平均值、均方根、峰值、偏度、峰度）上非常吻合。LES可以准确地识别周围建筑物产生负峰值压力系数比孤立建筑物产生负峰值压力系数更多的区域。发现峰值压力系数的变化是由平均流速大小和方向的变化引起的，包括新的流动分离、加速和涡形成区域。总之，LES是分析复杂城市环境中真实低层建筑风压的一个有价值的工具，可以提供可靠的局部峰值压力系数估计，并深入了解导致这些峰值的流动物理。

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引用次数: 0

Mitigating the abnormal vibration of the tail car of a 400 km/h high-speed train by using flow control devices 利用流量控制装置缓解400 km/h高速列车尾车厢异常振动

IF 4.9 2区工程技术 Q1 ENGINEERING, CIVIL

Journal of Wind Engineering and Industrial Aerodynamics

Pub Date : 2025-10-31 DOI: 10.1016/j.jweia.2025.106264

Yifan Li, Tian Li, Jiye Zhang

With increasing train speeds and diverse operational environments, abnormal vibration of the tail car has become a critical bottleneck limiting further advancements in high-speed train technology. This study develops aerodynamic and multi-body dynamics models for 3-car and 8-car train configurations to identify tail car vibration characteristics. Passive flow control strategies incorporating vortex generators and bogie skirts are proposed in various configurations to mitigate these vibrations. At the speed of 400 km/h, the aerodynamic load frequency characteristics, surface pressure distribution, and unsteady flow field around the train are analyzed. And the effectiveness of different aerodynamic optimization schemes in improving tail car stability is evaluated. Results indicate that the vortex generator enhances flow attachment by acting on the airflow over the carbody roof and upper rear region, while the bogie skirt suppresses turbulence along the carbody sides and rear lower section, reducing vortex shedding. Their combined application significantly reduces the vibration intensity of unsteady aerodynamic loads, leading to a 15.43 % and 15.82 % reduction in the maximum lateral and vertical stability indices of the tail car, respectively. This effectively mitigates aerodynamic disturbances and fundamentally improves overall train stability. The research results not only solve the problem of abnormal vibration of the tail car but also provide important engineering guidance for the aerodynamic shape optimization and vibration control of 400 km/h HST.

随着列车运行速度的提高和运行环境的多样化，尾车的异常振动已成为制约高速列车技术进一步发展的关键瓶颈。本研究建立了3节车厢和8节车厢列车配置的气动和多体动力学模型，以识别尾部车厢的振动特性。采用涡发生器和转向架裙摆组成的被动流动控制策略可以缓解这些振动。在400 km/h速度下，分析了列车的气动载荷频率特性、表面压力分布以及列车周围的非定常流场。并对不同气动优化方案在提高尾车稳定性方面的效果进行了评价。结果表明，涡发生器通过作用于车体顶部和后上部区域的气流来增强流动附着，而转向架裙部则通过抑制车体侧面和后下部区域的湍流来减少涡脱落。它们的组合应用显著降低了非定常气动载荷的振动强度，导致尾车的最大横向和垂直稳定指数分别降低了15.43%和15.82%。这有效地减轻了空气动力学干扰，从根本上提高了列车的整体稳定性。研究结果不仅解决了尾车异常振动问题，而且为400 km/h高速公路气动外形优化和振动控制提供了重要的工程指导。

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引用次数: 0

Field measurement study on typhoon characteristics based on stationary and non-stationary wind speed models 基于平稳和非平稳风速模型的台风特征实测研究

IF 4.9 2区工程技术 Q1 ENGINEERING, CIVIL

Journal of Wind Engineering and Industrial Aerodynamics

Pub Date : 2025-10-31 DOI: 10.1016/j.jweia.2025.106267

Xu Wang , Guoliang Zhang

Recent field measurements have demonstrated that conventional stationary random processes inadequately describe the wind characteristics of typhoons. Consequently, research needs to transition from stationary to non-stationary models. This study conducts a comparative analysis of stationary and non-stationary wind speed models, utilizing measured data from Typhoon Mangkhut, which had wind speeds exceeding 8 m/s at landfall. Firstly, the stationarity of the entire wind speed time series is assessed using the run test analysis method. Subsequently, the time-varying mean wind speed is derived through empirical mode decomposition (EMD) and discrete wavelet transform (DWT) techniques, with a comparative analysis of their efficiency. The results show that the DWT performs better in capturing the non-stationarity of the wind speed, and the extracted time-varying mean wind speed fluctuates more dramatically. On this basis, the non-stationary fluctuating wind characteristics, including turbulence intensity, gust factor, turbulence integral scale, and power spectral density (PSD), are further analyzed and compared with the stationary model results. It is found that the stationary model usually overestimates the fluctuating wind characteristics, resulting in conservative calculation outcomes. In addition, the study fits a stationary power spectral density model for Mangkhut in a flat sea area and estimates the evolving power spectra density (EPSD) in three directions by complex Morlet wavelets. It is found that the energy of non-stationary fluctuating winds is mainly concentrated in the low frequency band, and the energy decreases gradually with increasing frequency. The peak density of the EPSD of the turbulent wind displays notable time-varying features, which are essential for the transitory wind-induced vibrations of large-span structures. This work expands the database of non-stationary wind characteristics in extreme wind fields, offering significant references for wind-resistant designs in open sea regions.

最近的野外测量表明，传统的平稳随机过程不能充分描述台风的风特征。因此，研究需要从平稳模型过渡到非平稳模型。本文利用台风“山竹”登陆时风速超过8 m/s的实测数据，对平稳和非平稳风速模型进行了对比分析。首先，采用运行试验分析方法对整个风速时间序列进行平稳性评估。随后，通过经验模态分解（EMD）和离散小波变换（DWT）技术推导了时变平均风速，并对其效率进行了比较分析。结果表明，DWT在捕捉风速的非平稳性方面表现较好，提取的时变平均风速波动较大。在此基础上，进一步分析了湍流强度、阵风因子、湍流积分尺度和功率谱密度（PSD）等非平稳脉动风特征，并与平稳模型结果进行了比较。研究发现，平稳模型对脉动风特性估计过高，导致计算结果保守。此外，本文还拟合了平直海域山楂树的平稳功率谱密度模型，并利用复Morlet小波估计了三个方向上的演化功率谱密度。研究发现，非平稳脉动风的能量主要集中在低频段，且随频率的增加能量逐渐减少。紊流风的峰值密度具有显著的时变特征，这对大跨度结构的瞬态风致振动具有重要意义。本研究扩充了极端风场的非平稳风特性数据库，为开阔海域的抗风设计提供了重要参考。

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引用次数: 0

Field measurement study of non-stationary wind events in a mountain valley: Focusing on two analysis strategies for turbulence characteristics 山谷非平稳风场测量研究：聚焦湍流特性的两种分析策略

IF 4.9 2区工程技术 Q1 ENGINEERING, CIVIL

Journal of Wind Engineering and Industrial Aerodynamics

Pub Date : 2025-10-30 DOI: 10.1016/j.jweia.2025.106266

Yanwen Su , Yongping Zeng , Guowen Han

Wind characteristics are crucial for the wind-resistant design of long-span bridges located in mountain valleys. However, compared to coastal and plain regions, wind events in mountain valleys are often treated as complex flows that exhibit significant non-stationarity. Furthermore, existing analysis strategies for investigating the turbulence characteristics of these non-stationary wind events are not well-established. Therefore, this study aims to comprehensively investigate two analysis strategies for assessing the turbulence characteristics of non-stationary wind events in a mountain valley, utilizing high-frequency wind field data collected by triaxial ultrasonic anemometers. First, an effective framework is developed to classify and quantify non-stationary processes. This framework enables a detailed examination of the non-stationarity inherent in turbulence fluctuations, establishing a solid theoretical foundation for their modeling and characterization. Additionally, the validity of both conventional and time-dependent analysis strategies for assessing the turbulence characteristics of various nonstationary wind events is investigated and discussed, including thermally developed winds, convective gusts, and cooling windstorms. Our findings reveal that there are discrepancies between the two analysis strategies. Notably, the time-dependent analysis strategy can serve as a generalized approach applicable to both non-stationary and stationary turbulence fluctuations. Consequently, it is unnecessary to examine the non-stationarity of turbulence fluctuations prior to analyzing turbulence characteristics, which will improve convenience in practical applications. The outcomes of this study are expected to offer valuable insights for field measurements and fluid-structure interactions, which are significant concerns within the wind engineering community.

风特性对山谷大跨度桥梁的抗风设计至关重要。然而，与沿海和平原地区相比，山谷中的风事件通常被视为复杂的流动，表现出显著的非平稳性。此外，研究这些非平稳风事件湍流特性的现有分析策略还不完善。因此，本研究旨在利用三轴超声风速仪采集的高频风场数据，综合研究两种评估山谷非平稳风事件湍流特性的分析策略。首先，开发了一个有效的框架来对非平稳过程进行分类和量化。该框架能够详细检查湍流波动中固有的非平稳性，为其建模和表征奠定坚实的理论基础。此外，研究和讨论了用于评估各种非平稳风事件湍流特性的常规分析策略和时间相关分析策略的有效性，包括热发展风、对流阵风和冷却风暴。我们的研究结果表明，两种分析策略之间存在差异。值得注意的是，时间相关分析策略可以作为一种适用于非平稳和平稳湍流波动的广义方法。因此，在分析湍流特性之前不需要考察湍流波动的非平稳性，这将提高实际应用的便捷性。这项研究的结果有望为现场测量和流固相互作用提供有价值的见解，这是风工程界关注的重要问题。

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引用次数: 0

Comparison of wind-resistant capacities of 360° low-vertical standing seam roof systems under static uniform pressures and dynamic non-uniform wind pressures 静均压与动非均压条件下360°低垂直立缝屋面体系抗风能力比较

IF 4.9 2区工程技术 Q1 ENGINEERING, CIVIL

Journal of Wind Engineering and Industrial Aerodynamics

Pub Date : 2025-10-29 DOI: 10.1016/j.jweia.2025.106265

Changhong Tong , Min Liu , Shidong Nie , Kunpeng Guo , Jianjun Li , Baolong Cheng

Static uniform loading tests remain the standard method for evaluating the wind resistance of roof systems, though their validity is constrained by inherent discrepancies from actual dynamic non-uniform wind load. While prior studies have established the dynamic wind load effects on high-vertical standing seam metal roof systems (H-SSMRS), the interaction mechanisms remain insufficiently understood for 360° low-vertical SSMRS (360L-SSMRS) due to their fundamentally different joint mechanics. This investigation employs finite element analysis to quantify the ultimate pressure differentials between static uniform and dynamic non-uniform wind load through a wind load distribution influence coefficient. The contribution of panel width and connection types of roofs to this effect was studied. Static wind uplift safety factor is discussed using a probabilistic design method, considering the impact. The results show that the panel width significantly contributes to wind load distribution influence coefficients, changing from a positive effect to a negative one as the panel width decreases. The 360L-SSMRS may be more favorably impacted by dynamic non-uniform wind load compared to the H-SSMRS. Static wind uplift safety factor for the 360L-SSMRS is recommended to be selected based on roof zones and panel widths rather than using a fixed value.

静态均匀荷载试验仍然是评估屋面系统抗风能力的标准方法，尽管其有效性受到与实际动态非均匀风荷载固有差异的限制。虽然之前的研究已经确定了动态风荷载对高垂直立缝金属屋面系统（H-SSMRS）的影响，但由于360°低垂直立缝金属屋面系统（360L-SSMRS）的接缝力学特性根本不同，因此对其相互作用机制的了解还不够充分。本研究采用有限元分析，通过风荷载分布影响系数来量化静态均匀风荷载与动态非均匀风荷载之间的极限压差。研究了面板宽度和屋顶连接方式对这一影响的贡献。考虑影响因素，采用概率设计方法讨论了静力风升安全系数。结果表明：面板宽度对风荷载分布影响系数有显著影响，随着面板宽度的减小，面板宽度由正作用变为负作用；与H-SSMRS相比，360L-SSMRS可能更容易受到动态非均匀风荷载的影响。360L-SSMRS的静风抬升安全系数建议根据屋面面积和面板宽度选择，而不是使用固定值。

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引用次数: 0

Relationship between unsteady wind forces and fluctuating wind pressure fields around a prism 棱镜周围非定常风力与脉动风压场的关系

IF 4.9 2区工程技术 Q1 ENGINEERING, CIVIL

Journal of Wind Engineering and Industrial Aerodynamics

Pub Date : 2025-10-25 DOI: 10.1016/j.jweia.2025.106257

Tomoyuki Murakami , Tetsuro Taniguchi

Wind forces acting on vibrating buildings, or unsteady wind forces, are influenced by transformations in the wind pressure fields around the structures caused by their vibrations. Although significant research effort has been invested in analyzing unsteady wind forces, the literature is deficient in a satisfactory explanation of their relationship with the fluctuating wind pressure fields around a building. This study employs complex proper orthogonal decomposition analysis to examine the fluctuating wind pressure fields around rigid and elastic models under smooth and gradient flow conditions. This paper presents a method to represent fluctuating wind pressure fields formed by the first and second modes using a symmetric and anti-symmetric modes. Using this approach, the study investigates the relationship between the anti-symmetric fluctuating wind pressure field—characterized by the product of the anti-symmetric mode and its corresponding principal coordinate—and the across-wind forces and associated response displacements. Under smooth flow conditions at resonance, the anti-symmetric fluctuating wind pressure fields of the elastic model, influenced by the formation of Kármán vortices, differ significantly from those of the rigid model. Specifically, pressure fluctuations intensify across a wide area on the model's sides, and the wind force aligns more closely in phase with the response displacement at resonance, amplifying the vibration of the elastic model. Under gradient flow conditions, the across-wind force decreases approximately half a cycle after the local maximum of the across-wind vibration of the elastic model. This indicates that the vibration of the elastic model can suppress the wind force.

作用在振动建筑物上的风力，即非定常风力，受建筑物振动引起的结构周围风压场变化的影响。虽然在分析非定常风力方面投入了大量的研究工作，但文献中缺乏对非定常风力与建筑物周围脉动风压场之间关系的令人满意的解释。本文采用复固有正交分析方法研究了光滑流动和梯度流动条件下刚性模型和弹性模型周围的脉动风压场。本文提出了一种用对称模态和反对称模态表示由第一模态和第二模态形成的脉动风压场的方法。利用这种方法，研究了以反对称振型及其对应主坐标的乘积为特征的反对称脉动风压场与横向风力和相关响应位移之间的关系。在共振平滑流动条件下，受Kármán涡旋形成的影响，弹性模型的反对称脉动风压场与刚性模型的反对称脉动风压场存在显著差异。具体来说，在模型两侧的大范围内，压力波动加剧，并且风力与共振时的响应位移在相位上更加紧密地对齐，从而放大了弹性模型的振动。在梯度流动条件下，弹性模型横风振动达到局部最大值后，横风力减小约半个周期。这说明弹性模型的振动可以抑制风力。

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引用次数: 0

A novel real-time aeroelastic hybrid simulation system of section model wind tunnel testing based on adaptive extended Kalman filter 基于自适应扩展卡尔曼滤波的截面模型风洞试验实时气动弹性混合仿真系统

IF 4.9 2区工程技术 Q1 ENGINEERING, CIVIL

Journal of Wind Engineering and Industrial Aerodynamics

Pub Date : 2025-10-25 DOI: 10.1016/j.jweia.2025.106261

Wenkai Du , Guangzhong Gao , Suhan Li , Bo Fu , Jiawu Li , Ledong Zhu

Elastically-supported section model test is the most basic experimental technique in wind engineering, where helical springs are commonly employed to simulate the two-degree-of-freedom low-order modal motions of flexible structures. However, the traditional technique has intrinsic limitations in the accurate modeling of nonlinear structural behaviors, particularly nonlinear structural damping. Real-time hybrid simulation (RTHS), an emerging method for structural dynamics, is limited to linear responses or lacks accuracy in fluid-structure coupling, restricting its application to complex aeroelastic phenomena. To overcome these limitations, this study proposes a novel Real-Time Aeroelastic Hybrid Simulation (RTAHS) system that integrates an active control algorithm based on an Adaptive Extended Kalman Filter (AEKF). The proposed AEKF-enhanced framework enables real-time state estimation and compensation for nonlinear heave-transverse-torsion coupled vibrations while effectively mitigating inherent time-delay effects and measurement noise. In the RTAHS system, structural properties (mass, damping, and stiffness) are flexibly adjusted via the numerical substructure, while only the model's geometry requires precise replication in the wind tunnel. To validate the feasibility and accuracy of the proposed RTAHS system, a MATLAB/Simulink–FLUENT/UDF co-simulation framework is developed. Numerical verification results indicate that the proposed algorithm effectively estimates the motion responses in both linear and nonlinear scenarios.

弹性支撑截面模型试验是风力工程中最基本的试验技术，通常采用螺旋弹簧来模拟柔性结构的二自由度低阶模态运动。然而，传统的方法在非线性结构行为，特别是非线性结构阻尼的精确建模方面存在固有的局限性。实时混合仿真（RTHS）是一种新兴的结构动力学研究方法，但由于其局限于线性响应或流固耦合精度不高，限制了其在复杂气动弹性现象中的应用。为了克服这些限制，本研究提出了一种新的实时气动弹性混合仿真（RTAHS）系统，该系统集成了基于自适应扩展卡尔曼滤波器（AEKF）的主动控制算法。提出的aekf增强框架能够实时估计和补偿非线性起伏-横向-扭转耦合振动，同时有效减轻固有的时延效应和测量噪声。在RTAHS系统中，结构特性（质量、阻尼和刚度）可以通过数值子结构灵活调整，而只有模型的几何形状需要在风洞中精确复制。为了验证所提出的RTAHS系统的可行性和准确性，开发了MATLAB/ Simulink-FLUENT /UDF联合仿真框架。数值验证结果表明，该算法能有效估计线性和非线性场景下的运动响应。

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引用次数: 0