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

Special dynamic response characteristics of jumper compared to long-span overhead transmission lines subject to winds 跨接线与大跨架空输电线路在风作用下的特殊动态响应特性

IF 4.9 2区工程技术 Q1 ENGINEERING, CIVIL

Journal of Wind Engineering and Industrial Aerodynamics

Pub Date : 2025-12-08 DOI: 10.1016/j.jweia.2025.106298

Weizheng Zhou , Wenjuan Lou , Yuelong Zhang , Rong Bian

The jumper is a connected conductor to route the long span transmission line (TL) around the metal tower. The physical parameters of jumper and TL are nearly the same, except that the span of jumper is generally about 10–15 m, less much than the TL. Considering the rising wind-induced flashover accidents of jumper compared to the TL, it is meaningful to figure out the reasons why the jumper is vulnerable to wind-induced flashover, and help to improve existing jumper structures. Three potential factors are proposed, including the resonant response, the non-Gaussian wind, and the short-rise-time gust. A model of transmission line system included the jumper is established and various methods are used to give a thorough analysis on the root cause of the different wind-induced dynamic responses exhibited by the TLs and jumpers subject to winds. The results show that the aerodynamic damping ratio of jumper is less than half of TL's, which makes a greater than 50 % increment of the dynamic response by the resonant response at the suspension insulator string for jumper. Moreover, the jumper is more sensitive to the upstream wind and are easily affected by the non-Gaussian wind and the short-rise-time wind than TLs. Based on theoretical derivation, the modified formula of the gust response factor for jumper is proposed to help the wind-resistance design. In general, more caution on the wind-resistance design for the flexible jumper structure is required to avoid becoming the weakness in the transmission line system during wind disasters.

跳线是将大跨距输电线路绕金属塔布线的连接导体。跨接线与跨接线的物理参数基本相同，只是跨接线的跨度一般在10-15 m左右，比跨接线要小。考虑到跨接线的风闪事故相对于跨接线有所上升，找出跨接线易受风闪的原因，对改进现有跨接线结构具有重要意义。提出了共振响应、非高斯风和短上升时阵风三个潜在影响因素。建立了包含跳线的输电线路系统模型，并采用多种方法深入分析了在风作用下跳线和跳线所表现出的不同风致动力响应的根本原因。结果表明，跳线的气动阻尼比小于TL的一半，这使得跳线在悬架绝缘子串处的谐振响应增加了50%以上的动态响应。跳线对上游风较为敏感，易受非高斯风和短升时风的影响。在理论推导的基础上，提出了跳线阵风响应系数的修正公式，以帮助跳线抗风设计。一般情况下，柔性跳线结构的抗风设计应更加谨慎，以免成为风灾时输电线路系统的软肋。

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引用次数: 0

Simulation of non-stationary winds in typhoon field based on turbulent coherent structure and AR-GARCH model 基于湍流相干结构和AR-GARCH模型的台风场非平稳风场模拟

IF 4.9 2区工程技术 Q1 ENGINEERING, CIVIL

Journal of Wind Engineering and Industrial Aerodynamics

Pub Date : 2025-12-06 DOI: 10.1016/j.jweia.2025.106302

Xigui Huang , Shangxin Chen , Teng Wu , Gang Hu , Chao Li , Wujian Long , Lixiao Li

A key challenge in simulating nonstationary wind speeds lies in accurately modeling the time-varying mean wind speeds and/or the standard deviation of the fluctuating wind components. This difficulty is primarily due to limited understanding of the mechanisms and evolutionary characteristics of wind speed nonstationary, which can currently only be described statistically in the time-frequency domain. In this study, ten sets of field-measured wind speed data from five typhoon events were analyzed to extract turbulent coherent structures, which are generally regarded as intrinsic drivers of wind nonstationarity. Their spatial and temporal distributions, as well as their evolution within typhoon wind fields, were systematically examined. Based on these insights, a simulation method for nonstationary typhoon wind speeds was proposed. Specifically, all datasets were decomposed into nonstationary coherent structure components and stationary fluctuating wind components. The parameters of an autoregressive generalized autoregressive conditional heteroskedasticity (AR-GARCH) model and a normalized spectral model were then fitted separately to these decomposed components. The simulated results were evaluated using the cumulative distribution function, cumulative normalized arias intensity, and power spectral density. The results show that the proposed method can effectively reproduce the time-frequency characteristics of measured nonstationary wind speeds associated with typhoon events.

模拟非平稳风速的一个关键挑战在于准确地模拟随时间变化的平均风速和/或波动风分量的标准偏差。这一困难主要是由于对风速非平稳的机制和演化特征的理解有限，目前只能在时频域进行统计描述。本文分析了5次台风的10组实测风速数据，提取了湍流相干结构，这些湍流相干结构通常被认为是风非平稳性的内在驱动因素。系统地研究了它们的时空分布及其在台风风场中的演变。在此基础上，提出了一种非平稳台风风速的模拟方法。具体而言，所有数据集都被分解为非平稳相干结构分量和平稳波动风分量。然后对分解后的分量分别拟合自回归广义自回归条件异方差（AR-GARCH）模型和归一化谱模型的参数。利用累积分布函数、累积归一化咏叹调强度和功率谱密度对模拟结果进行评价。结果表明，该方法能有效再现与台风事件相关的实测非平稳风速的时频特征。

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引用次数: 0

Flutter uncertainty analysis of flexible photovoltaic support structure considering stochastic aerodynamic and structural parameters 考虑随机气动和结构参数的柔性光伏支撑结构颤振不确定性分析

IF 4.9 2区工程技术 Q1 ENGINEERING, CIVIL

Journal of Wind Engineering and Industrial Aerodynamics

Pub Date : 2025-12-04 DOI: 10.1016/j.jweia.2025.106300

Rui Zhou, Zidong Xu, Hao Wang, Yun Liu, Jiahao Nie

Flexible photovoltaic support structures (FPSS) are highly susceptible to wind-induced flutter due to their low mass, low stiffness, and thin-plate-like cross-sections. Traditional deterministic flutter analyses, which overlook the inherent uncertainties of the dynamic system, are insufficient for effectively quantifying the risk of flutter instability. In this work, the advanced probability density evolution method is introduced for uncertainty propagation analysis of flutter in FPSS, where wind speed is treated as a generalized time variable in the probability density evolution equation. Considering the uncertainties in key aerodynamic and structural parameters, and the Karhunen–Loève expansion is employed to reduce the dimensionality of the flutter derivative random processes. Subsequently, a full-order flutter analysis is performed on a typical three-cable-supported FPSS. Results indicated that the dispersion of the modal damping ratio and frequency increases with wind speed, with the torsional mode exhibiting a multi-peak distribution in both damping ratio and frequency. The probabilistic flutter critical wind speed, determined based on the 99 % confidence level, is 7 % lower than the deterministic value. The

A_{1}^{*}

and the structural damping ratio are the most influential aerodynamic and structural parameters, respectively, in affecting the probability distribution of the flutter critical wind speed.

柔性光伏支撑结构（FPSS）由于其低质量、低刚度和薄板状截面，极易受到风致颤振的影响。传统的确定性颤振分析忽略了动力系统固有的不确定性，不足以有效地量化颤振失稳风险。本文将先进的概率密度演化方法引入FPSS颤振不确定性传播分析，将风速作为概率密度演化方程中的广义时间变量。考虑关键气动参数和结构参数的不确定性，采用karhunen - lo展开法对颤振导数随机过程进行降维。随后，对典型的三索支撑FPSS进行了全阶颤振分析。结果表明：阻尼比和频率的频散随风速增大而增大，扭转模态在阻尼比和频率上均呈多峰分布；基于99%置信水平确定的概率颤振临界风速比确定值低7%。A1 *和结构阻尼比分别是影响颤振临界风速概率分布的最大气动参数和结构参数。

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引用次数: 0

Wind tunnel investigation of aerodynamic interactions between twin high-rise buildings connected by a skybridge at varying installation heights 由天桥连接的两座高层建筑在不同安装高度下的空气动力学相互作用的风洞研究

IF 4.9 2区工程技术 Q1 ENGINEERING, CIVIL

Journal of Wind Engineering and Industrial Aerodynamics

Pub Date : 2025-12-04 DOI: 10.1016/j.jweia.2025.106296

Min Kyu Kim , Thomas H.-K. Kang

A modular wind tunnel model was developed and validated to examine the aerodynamic behavior of twin high-rise buildings connected by a skybridge. The model allowed adjustable bridge heights while maintaining geometric accuracy, and its reliability was confirmed through comparison with published data. Wind tunnel tests across eleven bridge height configurations assessed both global aerodynamic responses and local surface pressures. Results showed that adding a skybridge slightly reduced fluctuating lift and torsional base moments of the buildings, indicating potential aerodynamic benefits for structural design. However, aerodynamic loads on the skybridge increased with height, peaking when placed at roof level. Local pressure measurements between the facing building surfaces revealed significant amplification in both mean and fluctuating components. Cross-correlation analysis identified strong negative coupling of crosswind forces between upstream and downstream buildings, while aerodynamic interaction with the skybridge remained limited. Overall, the skybridge demonstrated a dual aerodynamic role, moderately mitigating building responses yet introducing higher local loads. The validated modular approach offers a robust and adaptable framework for future parametric studies and supports data-driven aerodynamic optimization and skybridge placement in tall building systems.

建立并验证了模块化风洞模型，以研究由天桥连接的双座高层建筑的空气动力学行为。该模型可以在保持几何精度的同时调节桥梁高度，并通过与公开数据的比较证实了其可靠性。风洞试验跨越11个桥梁高度配置，评估了整体空气动力学响应和局部表面压力。结果表明，增加天桥可以略微降低建筑物的波动升力和扭转基础矩，表明结构设计可能具有气动效益。然而，天桥上的空气动力载荷随着高度的增加而增加，当放置在屋顶水平时达到峰值。建筑物表面之间的局部压力测量显示，平均分量和波动分量都有显著的放大。相互关联分析表明，上游和下游建筑之间的侧风力存在强烈的负耦合，而与天桥的空气动力学相互作用仍然有限。总的来说，天桥展示了双重空气动力学作用，适度减轻了建筑物的反应，但引入了更高的局部负荷。经过验证的模块化方法为未来的参数研究提供了一个强大的、适应性强的框架，并支持数据驱动的空气动力学优化和高层建筑系统中的天桥布置。

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引用次数: 0

An analytical model for boundary layer wind velocity profiles of landfalling typhoons based on field measurements 基于实测的登陆台风边界层风速廓线分析模型

IF 4.9 2区工程技术 Q1 ENGINEERING, CIVIL

Journal of Wind Engineering and Industrial Aerodynamics

Pub Date : 2025-12-04 DOI: 10.1016/j.jweia.2025.106301

Xigui Huang , Shengchang Luo , Chulong Yuan , Gang Hu , Chao Li , Lixiao Li

Low-level jets (LLJs) below 100 m height are frequently observed in typhoon boundary layer wind through field measurements. However, their occurrence patterns and characteristics remain inadequately quantified. Existing empirical wind profile models (e.g. power-law model, log-law model, Vickery model) often fail to capture the full vertical structure of typhoon winds, particularly in the near-surface layer where deviations are significant due to the influence of low-level jets. This study presents a comprehensive analysis of boundary layer wind profiles based on field measurements from multiple landfalling typhoons across various surface exposure categories, typhoon structural partitions and wind speed ranges. Statistical analyses indicate that LLJs are more prevalent under high wind speeds within the back eyewall region. In response, an analytical wind profile model is proposed that accounts for the LLJ phenomenon and the reverse “C”-shaped vertical profile typical of typhoon wind fields. Empirical formulations for model parameters were developed as a function of the 10m reference height wind speed(U₁₀), calibrated through nonlinear regression. The proposed model demonstrates improved accuracy in replicating measured typhoon wind profiles compared to conventional models. Validation with representative typhoon events confirms the model's applicability and robustness for engineering wind load assessments in typhoon-prone regions.

通过实地测量，在台风边界层风中经常观测到高度低于100米的低空急流。然而，它们的发生模式和特征仍然没有得到充分的量化。现有的经验风廓线模型（如幂律模型、对数律模型、维克里模型）往往不能捕捉台风风的完整垂直结构，特别是在近地面层，由于低空急流的影响，偏差很大。本研究基于多个登陆台风在不同地表暴露类别、台风结构分区和风速范围的实地测量，对边界层风廓线进行了综合分析。统计分析表明，在高风速条件下，后眼壁区域内llj更为普遍。为此，提出了考虑LLJ现象和台风风场典型的反“C”型垂直廓线的解析风廓线模型。模型参数的经验公式是10米参考高度风速（U10）的函数，并通过非线性回归进行校准。与传统模式相比，所提出的模式在模拟台风风廓线的准确度有所提高。具有代表性的台风事件验证了该模型对台风易发地区工程风荷载评估的适用性和鲁棒性。

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引用次数: 0

Wind load time history regenerated considering coherences for performance-based wind design of tall buildings 高层建筑性能风设计中考虑相干的风荷载时程再生

IF 4.9 2区工程技术 Q1 ENGINEERING, CIVIL

Journal of Wind Engineering and Industrial Aerodynamics

Pub Date : 2025-12-04 DOI: 10.1016/j.jweia.2025.106283

Un Yong Jeong, Liam Dupelle, Stephanie Hartlin

For Performance-Based Wind Design (PBWD) analysis, a new approach called Regenerated Coherence (RC) method is proposed to generate 3-dimensional wind load time histories based on High-Frequency Force Balance (HFFB) method considering coherences between different directions and levels. In generating the time series, the coherences are expressed in terms of the measured base moments from HFFB testing and the coherences between any two levels along the height of the building, respectively. The authors find that base moment spectra and the coherences of the time series between different directions and levels generated by the RC method match well with HFFB wind tunnel testing or the target values. It is shown that the quasi-steady component of a bending moment at a height is more accurately generated with the RC method in comparison to a simpler linear combination method. Multiple sets of RC wind loads are selected to envelop the worst loading conditions in all orthogonal directions for use in PBWD.

针对基于性能的风设计（PBWD）分析，提出了一种基于高频力平衡（HFFB）方法的三维风荷载时程生成方法——再生相干性（RC）方法。在生成时间序列时，相干性分别表示为HFFB测试中测量到的基矩和沿建筑物高度任意两层之间的相干性。作者发现，RC方法生成的基矩谱和不同方向、不同水平间时间序列的相干性与HFFB风洞试验或目标值吻合较好。结果表明，与简单的线性组合方法相比，用RC方法可以更精确地生成高度处弯矩的准稳定分量。选择多组钢筋混凝土风荷载，在各正交方向上包涵最坏荷载条件，用于PBWD。

引用次数: 0

Evaluating gust-induced vibrations in high-rise buildings: Insights from in-situ measurements and prediction models 评估高层建筑的阵风诱发振动：来自现场测量和预测模型的见解

IF 4.9 2区工程技术 Q1 ENGINEERING, CIVIL

Journal of Wind Engineering and Industrial Aerodynamics

Pub Date : 2025-12-04 DOI: 10.1016/j.jweia.2025.106303

F.H. Kemper , A.J. Bronkhorst , C.P.W. Geurts

This paper examines gust-induced vibrations in a high-rise residential tower, focusing on the comparison between in-situ measurements and predictions based on current code provisions. Extensive data collected from the New Orleans Tower in Rotterdam — equipped with pressure sensors, accelerometers, and anemometers — was evaluated against predictions derived from the Eurocode and wind tunnel tests. The findings reveal significant discrepancies between measured and predicted accelerations, primarily attributable to inaccuracies in key input parameters rather than limitations of the prediction model itself. The simplified code recommendations fail to account for the effects of neighboring structures and wind directionality. A comprehensive study of aerodynamics force coefficient and structural dynamics were undertaken to assess the prediction models. This study underscores the importance of improving urban wind modeling and incorporating building-specific factors into structural design codes, advocating for the integration of detailed in-situ data and advanced computational techniques to enhance the accuracy of wind-induced vibration predictions in high-rise buildings.

本文研究了高层住宅楼的阵风诱发振动，重点研究了现场测量和基于现行规范规定的预测之间的比较。从鹿特丹的新奥尔良塔收集的大量数据——配备了压力传感器、加速度计和风速计——与欧洲法规和风洞试验得出的预测进行了评估。研究结果显示，测量的加速度和预测的加速度之间存在显著差异，主要是由于关键输入参数的不准确，而不是预测模型本身的局限性。简化的规范建议没有考虑相邻结构和风向的影响。对空气动力学、力系数和结构动力学进行了综合研究，对预测模型进行了评估。本研究强调了改善城市风建模和将建筑特定因素纳入结构设计规范的重要性，提倡将详细的现场数据和先进的计算技术相结合，以提高高层建筑风致振动预测的准确性。

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引用次数: 0

LES of wind-induced pressures and flow structures around tandem buildings 串联建筑周围风致压力和流动结构的LES

IF 4.9 2区工程技术 Q1 ENGINEERING, CIVIL

Journal of Wind Engineering and Industrial Aerodynamics

Pub Date : 2025-12-04 DOI: 10.1016/j.jweia.2025.106304

Latife Atar, Oya Mercan

This study investigates the effects of upstream building interference on surface pressure distributions and flow behavior around a principal building in a tandem arrangement using Large Eddy Simulation (LES), validated against wind tunnel measurements. Streamwise separations ranging from 1.5

B

to 6

B

were analyzed to capture transitions between established interference regimes, including reattachment and co-shedding. Particular emphasis is given on evaluating mean, root-mean-square, and peak pressure coefficients, with peak values highlighted due to their relevance in cladding design and extreme wind load assessment. Results show that maximum peak pressures on the windward wall are generally suppressed under interference, while minimum peak pressures are significantly amplified near vertical edges and separation zones. This amplification is especially pronounced for separations below 3

B

, where shielding reduces stagnation loads but enhances suction effects. Flow visualizations and turbulence-intensity maps confirm transitions in the interference regime, from wake shielding and attached roof flow to roof-level separation and vortex formation. The findings demonstrate the capability of LES to resolve key flow features and pressure variations in tandem building configurations and emphasize the importance of accounting for extreme suction demands in closely spaced urban environments.

本研究利用大涡模拟（LES）研究了上游建筑干扰对主建筑周围串联式布置的表面压力分布和流动行为的影响，并通过风洞测量进行了验证。分析了从1.5 B到6 B的流向分离，以捕获已建立的干扰机制之间的过渡，包括再附着和共脱落。特别强调评估平均、均方根和峰值压力系数，突出显示峰值，因为它们与包层设计和极端风荷载评估有关。结果表明，在干扰作用下，迎风壁面的最大峰值压力总体上被抑制，而在垂直边缘和分离带附近的最小峰值压力显著放大。这种放大对于低于3b的分离尤其明显，其中屏蔽减少了停滞载荷，但增强了吸力效应。流动可视化和湍流强度图证实了干扰状态的转变，从尾流屏蔽和附加的屋顶流动到屋顶水平分离和漩涡形成。研究结果表明，LES能够解决串联建筑结构中的关键流动特征和压力变化，并强调了在密集空间的城市环境中考虑极端吸力需求的重要性。

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引用次数: 0

Wind environment and pedestrian comfort assessment around a high-rise building: Coupled effect of building shape and surrounding density 高层建筑周边风环境与行人舒适度评价：建筑形体与周边密度的耦合效应

IF 4.9 2区工程技术 Q1 ENGINEERING, CIVIL

Journal of Wind Engineering and Industrial Aerodynamics

Pub Date : 2025-11-30 DOI: 10.1016/j.jweia.2025.106297

Keyi Chen , Ziwei Mo , Yaxing Du

High-rise buildings play a crucial role in shaping the urban wind environment. This study investigates wind flows around high-rise structures featuring different cross-sectional shapes (square, triangle, octagon, T-shaped, cross-shaped, #-shaped, H-shaped, and L-shaped) and building densities (λ_p = 0.44, 0.25, 0.11) through computational fluid dynamics (CFD) modeling. The maximum wind speed ratio K_max around high-rise buildings increases as building density decreases. Notably, K_max is highest around triangle (2.12 at λ_p = 0.44, 2.21 at λ_p = 0.25) and L-shaped building (2.12 at λ_p = 0.44, 2.43 at λ_p = 0.11), while being lowest (1.41–1.93) around octagon structures. Under calm climates, variations in building shapes significantly impact the area ratio of unfavorable region (AR_UF) at higher building densities, causing the most difference about 15.59 %. Conversely, in windy climates, the area ratio of the intolerable region (AR_IN) at λ_p = 0.11 experiences more increase (e.g., from 0 % to 4.16 % for octagon buildings), suggesting enhanced ventilation but also potential hazards. Furthermore, human comfort index (I_BC) fluctuations induced by building shapes are more pronounced in winter under windy conditions. These findings advance our understanding of flow patterns and pedestrian comfort around high-rise buildings, emphasizing the importance of considering both building shapes and densities.

高层建筑对城市风环境的塑造起着至关重要的作用。通过计算流体力学（CFD）建模，研究了不同截面形状（方形、三角形、八角形、t形、十字形、#形、h形、l形）和建筑密度（λp = 0.44、0.25、0.11）的高层建筑的风场。高层建筑周围最大风速比Kmax随着建筑密度的减小而增大。值得注意的是，Kmax在三角形（λp = 0.44时为2.12,λp = 0.25时为2.21）和l形建筑（λp = 0.44时为2.12,λp = 0.11时为2.43）周围最高，而在八角形建筑周围最低（1.41-1.93）。在平静气候条件下，建筑形状的变化显著影响建筑密度较高时的不利区域面积比，差异最大，约为15.59%。相反，在多风气候下，λp = 0.11处的不能忍受区域（ARIN）面积比增加更多（例如，八角形建筑从0%增加到4.16%），这表明通风增强了，但也有潜在的危险。此外，在冬季多风条件下，建筑形状引起的人体舒适度（IBC）波动更为明显。这些发现促进了我们对高层建筑周围人流模式和行人舒适度的理解，强调了同时考虑建筑形状和密度的重要性。

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引用次数: 0

Study on the influence mechanism of wind shear index on turbulence and dust spatio-temporal evolution pattern in tape transportation lane 风切变指数对胶带输送道湍流和粉尘时空演变规律的影响机制研究

IF 4.9 2区工程技术 Q1 ENGINEERING, CIVIL

Journal of Wind Engineering and Industrial Aerodynamics

Pub Date : 2025-11-29 DOI: 10.1016/j.jweia.2025.106284

Biao Sun, Qi Fu, Gang Zhou, Haotian Sun, Fengzhi Xie, Yongwei Liu

To achieve a more precise study of the impact of alterations in wind speed gradient on the dispersion of dust pollution in conveyor belt transport tunnels, Computational Fluid Dynamics-User-Defined Function numerical simulations were utilised to compare and analyze the changes in turbulence and dust pollution evolution under two distinct operating conditions: uniform wind speed and wind shear index disturbance. The findings suggest that the wind shear index exerts a substantial influence on the turbulent kinetic energy and dust concentration. It has been observed to result in an increase in average wind speed, accompanied by an expansion in the area of high turbulent kinetic energy zones. The area and numerical difference between the two operating conditions can reach up to 55.87 m² and 0.0056 m²/s², respectively. Concurrently, the high dust concentration zones at the breathing zone height shift from tunnel centre towards walkway. The average dust concentrations recorded are 216.32 mg/m³ and 137.04 mg/m³, respectively. The approximate linear relationship between wind shear index (W) and turbulent kinetic energy (T) is: T = 0.01874W - 0.00356 (r = 0.931). The relationship between dust concentration (C) and wind shear is: C = −1448.06e (W/0.15) + 191.71 (r = 0.874). Both show a strong positive correlation.

为了更精确地研究风速梯度变化对输送带运输隧道粉尘污染扩散的影响，采用计算流体动力学-自定义函数数值模拟方法，对比分析了均匀风速和风切变指数扰动两种不同工况下的湍流变化和粉尘污染演变。结果表明，风切变指数对湍流动能和粉尘浓度有较大影响。据观察，它会导致平均风速的增加，并伴随着高湍流动能区面积的扩大。两种工况的面积和数值差异分别可达55.87 m2和0.0056 m2/s2。同时，呼吸区高度的高粉尘集中区由隧道中心向走道转移。记录的平均粉尘浓度分别为216.32 mg/m3和137.04 mg/m3。风切变指数(W)与湍流动能(T)的近似线性关系为：T = 0.01874W - 0.00356 （r = 0.931）。粉尘浓度(C)与风切变的关系为：C =−1448.06e (W/0.15) + 191.71 （r = 0.874）。两者都显示出很强的正相关。

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引用次数: 0