Numerical modelling for evaluating the TMD performance in an industrial chimney

Lorenzana, A.; Belver, Ali Vasallo; López-Reyes, P. M.; Koo, Ki-Young

doi:10.12989/was.2013.17.3.263

Cited by 3 publications

(2 citation statements)

References 11 publications

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“…For the assembly of the chimney and the TMD, damping in calm conditions was also below 1%, rising to 4% for large motion, while in the simulation a value of just 2% has been used, corresponding to a mean value for winds about 10 m/s. The performance of this TMD has been studied and some results obtained through numerical simulation using the same method are presented in the work of Iban et al (2013).…”

Section: Numerical Simulationmentioning

confidence: 99%

Enhanced Vortex Shedding in a 183 m Industrial Chimney

Belver

Koo

Lorenzana

et al. 2014

Advances in Structural Engineering

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This paper shows how numerical simulation can be used to explain the dynamic behaviour of two chimneys in close proximity. For similar wind speeds, the dynamic response of the leeward chimney depends on alignment of wind directions with a vector from the new to the old chimney. Evidence is presented that Enhanced Vortex Shedding (EVS) caused significant vibrations on the old 183 m high reinforced concrete chimney at Rugeley Power Station during several years of coexistence with its replacement. Strong vibrations were observed under certain conditions of wind speed and direction during construction of the new chimney, consistent with predictions of a performance study. To avoid excessive response of the old chimney during its final years of coexistence with the new one, a tuned mass damper (TMD) was installed together with a monitoring system to verify the effectiveness of the TMD. The monitoring system allowed confirming that vibration levels for winds from the south-west direction of the new chimney were higher than for similar wind speeds from other directions, a finding validated by numerical simulation using advanced computational fluid dynamics (CFD) and fluid-structure interaction (FSI) techniques.

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Section: Numerical Simulationmentioning

confidence: 99%

Enhanced Vortex Shedding in a 183 m Industrial Chimney

Belver

Koo

Lorenzana

et al. 2014

Advances in Structural Engineering

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“…Gorski [20] investigated the influence of the three components mentioned above on the total cross-wind response of the chimney. Iban et al [21] developed a numerical technique for fluid-structure interaction. Cohen et al [22] studied the seismic vulnerability of an elevated steel tank within a reinforced concrete chimney.…”

Section: Introductionmentioning

confidence: 99%

Seismic Response and Safety Assessment of an Existing Concrete Chimney under Wind Load

Cheng

Wang

et al. 2018

Shock and Vibration

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A safety assessment of a chimney under the action of wind and earthquake is performed on one of the reinforced concrete chimneys in the Jinchuan company in China. The assessment is based on the linear filtering method, and wind loads of several heights on one field are simulated by MATLAB. The displacement of the structure under the action of wind load and earthquake is analyzed using maximum value superposition, and the stress on the chimney is calculated in four cases using the equal curvature criterion method. The time-history responses of the tall chimney structure under linear and nonlinear elastic conditions are discussed. The results show that for a chimney under wind load or frequent earthquakes, the displacement limit can meet the code requirements; however, under the combined action of frequent earthquakes and wind load, the structural displacement is bigger than other conditions. When the chimney is acted upon by a wind load, frequent earthquake action, or the combined action of wind load and frequent earthquake action, the maximum compressive stress, maximum tensile stress, and maximum shear stress are concentrated at the bottom of the chimney. The ultimate bearing capacity of a reinforced concrete chimney under three conditions can meet the original design requirements, but the maximum compressive stress at the bottom approaches the designed tensile limit value under the action of rare earthquakes; under these conditions, the bottom of the chimney may experience partial damage.

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Performance of a TMD to Mitigate Wind-Induced Interference Effects between Two Industrial Chimneys

2021

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The present paper studies the performance of a tuned mass damper (TMD) installed in a 183 m tall chimney located at the edge of the wake shed by another chimney. Numerical and experimental results are available. For the simulations, wind action is considered by solving several 2D flow problems on a selected number of horizontal planes, in the transverse direction to the stacks. On such planes, Navier-Stokes equations are solved to estimate the fluid action at different positions of the chimneys and standard interpolation techniques are applied in the vertical direction. An Arbitrary Lagrangian-Eulerian (ALE) approach is used to consider the moving domain, and a fractional-step scheme is used to solve the fluid field. For the structural modelling, chimneys are meshed using 3D beam finite elements. The time integration procedure used for the structural dynamics is based on the standard second order Bossak method. For each period of time, the fluid problem is solved, the aeroelastic analysis is carried out and the geometry of the fluid mesh of each plane is updated according to the structural movements. With this procedure and model updating techniques, the response of the leeward chimney is evaluated for different scenarios, revealing an interesting dependence of the TMD performance on the wind speed and direction.

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Numerical modelling for evaluating the TMD performance in an industrial chimney

Cited by 3 publications

References 11 publications

Enhanced Vortex Shedding in a 183 m Industrial Chimney

Enhanced Vortex Shedding in a 183 m Industrial Chimney

Seismic Response and Safety Assessment of an Existing Concrete Chimney under Wind Load

Performance of a TMD to Mitigate Wind-Induced Interference Effects between Two Industrial Chimneys

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