Enhanced Vortex Shedding in a 183 m Industrial Chimney

Belver, Ali Vasallo; Koo, Ki-Young; Lorenzana, A.; Goddard, Charles R.

doi:10.1260/1369-4332.17.7.951

Cited by 5 publications

(4 citation statements)

References 17 publications

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“…This behaviour is typical for dynamic structural response to turbulent buffeting via along-wind excitation. Figure 5 shows no evidence of high amplitudes of response for wind speed ranges between 5 and 20 m/s, where vortex shedding [17] would appear. The structure responded only under along-wind turbulent buffeting loading.…”

Section: Full-scale Wind Loading and Responsementioning

confidence: 94%

Ambient vibration testing and operational modal analysis of monopole telecoms structures

Capilla

Hudson³

2021

J Civil Struct Health Monit

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A structural health monitoring (SHM) system was developed to study the ambient response of monopole communication structures in the UK operated by Arqiva Ltd. The exercise had several purposes that included the evaluation of the SHM system itself and the system identification procedures applied to the data, followed by analysis of the evaluated modal properties to validate the current analytical models, structural assessments and standardised design procedures advising on dynamics actions. This paper describes the instrumentation and procedures used during monitoring of a lightweight flexible 14.5 m tubular tapered monopole supporting an array of mobile telecoms antennas. A Bayesian OMA (BAYOMA) approach is implemented to identify structural modal properties under different time windows as comparison for further assessments. Results from stochastic subspace identification are also obtained and compared. The correlation between modal properties and monitoring wind-response data reveals specific tendencies such as nonlinear stiffness behaviour, the existence of aerodynamic damping and typical directionality of the mode shapes with future implications for reformulation of current methods of assessing dynamics on monopole.

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Section: Full-scale Wind Loading and Responsementioning

confidence: 94%

Ambient vibration testing and operational modal analysis of monopole telecoms structures

Capilla

Hudson³

2021

J Civil Struct Health Monit

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“…To obtain the stress time history response at these hazardous locations and provide a basis for subsequent fatigue analysis, a dynamic response analysis of the structure is needed. Considering the complexity of the tower structure in this study and the sensitivity of the structure to wind loads, it is better to conduct a dynamic analysis using the fluid-structure interaction method [28][29][30] to obtain results that are closer to engineering practice.…”

Section: Dynamic Response Analysis Of the Steel-concrete Composite Wi...mentioning

confidence: 99%

Wind-Induced Response Analysis and Fatigue Reliability Study of a Steel–Concrete Composite Wind Turbine Tower

Zhang,

Liu,

Gao

et al. 2024

Buildings

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Taking an actual 3MW steel–concrete composite wind turbine tower as an example, a finite element model of the tower structure was established, and static bearing capacity and dynamic time history response analyses were performed to identify the locations where the structure is prone to failure. On this basis, the fatigue lives of the turbine tower at the most unfavorable locations were predicted using linear cumulative damage theory, and the fatigue reliability at the corresponding locations of the structure was calculated using the kriging–subset simulation method. The most dangerous locations of the tower that are most prone to failure are as follows: the bottom of the leeward side of the upper steel tube, the flange of the steel tube, the bolt-hole imprinting surface of the flange, the leeward side of the transition tube, and the top of the leeward side of the concrete tube. The failure risk of the flange and bolt-hole imprinting surface of the upper steel tube is relatively high, followed by that of the transition tube. This indicates that special attention should be given to the design and daily maintenance of this part. The fatigue resistance of the tower can be enhanced by improving the strength of the flange plate or increasing the number of bolts and strengthening the transition tube.

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“…In terms of structures, Castellani et al [18], Chizfahm et al [19], and Li et al [20] conducted numerical simulation studies on a horizontal axis micro wind turbine, a bladeless wind turbine, and a wind turbine with a damper, respectively. Belver et al [21] conducted wind vibration simulation studies on a 183 m industrial chimney, Wang et al [22] on a high-rise thin-walled tower, and Zou et al [23] on a very large natural ventilation cooling tower. In practical engineering, numerical simulation techniques have been applied to various types of structures.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation Study of Vibration Characteristics of Cantilever Traffic Signal Support Structure under Wind Environment

Zhang¹,

Zhou²,

Zhao³

et al. 2023

Computer Modeling in Engineering &Amp; Sciences

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Computational fluid dynamics (CFD) and the finite element method (FEM) are used to investigate the wind-driven dynamic response of cantilever traffic signal support structures as a whole. By building a finite element model with the same scale as the actual structure and performing modal analysis, a preliminary understanding of the dynamic properties of the structure is obtained. Based on the two-way fluid-structure coupling calculation method, the wind vibration response of the structure under different incoming flow conditions is calculated, and the vibration characteristics of the structure are analyzed through the displacement time course data of the structure in the crosswind direction and along-wind direction. The results show that the maximum response of the structure increases gradually with the increase of wind speed under 90°wind direction angle, showing a vibration dispersion state, and the vibration response characteristics are following the vibration phenomenon of galloping; under 270°wind direction angle, the maximum displacement response of the structure occurs at the lower wind speed of 5 and 6 m/s, and the vibration generated by the structure is vortex vibration at this time; the displacement response of the structure in along-wind direction increases with the increase of wind speed. The along-wind displacement response of the structure will increase with increasing wind speed, and the effective wind area and shape characteristics of the structure will also affect the vibration response of the structure.

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Enhanced Vortex Shedding in a 183 m Industrial Chimney

Cited by 5 publications

References 17 publications

Ambient vibration testing and operational modal analysis of monopole telecoms structures

Ambient vibration testing and operational modal analysis of monopole telecoms structures

Wind-Induced Response Analysis and Fatigue Reliability Study of a Steel–Concrete Composite Wind Turbine Tower

Numerical Simulation Study of Vibration Characteristics of Cantilever Traffic Signal Support Structure under Wind Environment

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