Across-wind vibrations of structure of circular cross-section. Part II. Development of a mathematical model for full-scale application

Basu, Roger; Vickery, B.J.

doi:10.1016/0167-6105(83)90081-8

Cited by 86 publications

(19 citation statements)

References 6 publications

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“…At the HDG it was not possible to simulate the turbulence of the atmospheric boundary layer. It is true that the lateral fluctuating component of the turbulent wind induces additional lift forces on the torque tube of circular cross-section (Basu and Vickery, 1983) and on the heliostat in all (Peterka and Derickson, 1992;Pfahl et al, 2011). Furthermore, by Cheung and Melbourne (2005) an increase of the span-wise force correlation with increased turbulence intensity was determined.…”

Section: Selection Of Toolmentioning

confidence: 95%

Wind loads on heliostats and photovoltaic trackers at various Reynolds numbers

Pfahl

Uhlemann²

2011

Journal of Wind Engineering and Industrial Aerodynamics

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Section: Selection Of Toolmentioning

confidence: 95%

Wind loads on heliostats and photovoltaic trackers at various Reynolds numbers

Pfahl

Uhlemann²

2011

Journal of Wind Engineering and Industrial Aerodynamics

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“…Different semi-empirical models have been used for describing VIV and lock-in phenomena, including wake oscillator models (Bishop and Hassan, 1963;Hartlen and Currie, 1970;Griffin et al, 1973;Skop and Griffin, 1973), SDOF models that use a single ordinary differential equation to describe the behavior of structural oscillator (Basu and Vickery, 1983;Simiu and Scanlan, 1986;Goswami et al, 1993), force decomposition models in which the lift force is decomposed into a fluid inertia force related to structure displacement and a fluid damping force related to structure velocity (Griffin, 1980;Griffin and Koopman, 1997), and variational approaches (McIver, 1973;Benaroya and Wei, 2000).…”

Section: Introductionmentioning

confidence: 99%

A modified wake oscillator model for vortex-induced vibration of circular cylinders for a wide range of mass-damping ratio

Farshidianfar

Zanganeh

2010

Journal of Fluids and Structures

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“…The first two most accepted models by the Wind Engineering community in the case of the circular section were developed in the 1980's. The first model (Vickery and Basu [2], [3], [4], Basu and Vickery [5]), was developed at the University of Western Ontario, Canada, and considers the effects of fluid-structure interaction, incorporating the concept of negative aerodynamic damping. The second model (Ruscheweyh,[6]), developed at the University of Aachen, Germany, considers that equivalent forces due to vortex shedding occur at a given correlation length.…”

Section: Introductionmentioning

confidence: 99%

Aerodynamic effects on a high slenderness concrete chimney

Loredo-Souza

Rocha

Oliveira³

et al. 2019

Rev. IBRACON Estrut. Mater.

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This is an open-access article distributed under the terms of the Creative Commons Attribution License A. M. LOREDO-SOUZA a acir@ufrgs.br https://orcid.org/0000-0002-6648-8315 M. M. ROCHA a mmrocha@ufrgs.br Abstract ResumoThis paper presents the results of a theoretical-experimental study on the aerodynamic behavior of a 150m high, slenderness 30, concrete chimney. For the wind tunnel tests two scaled models were built: one rigid for the measurement of the external pressures, and other aeroelastic, in which the main dynamic characteristics of the real structure were reproduced. The dynamic response under atmospheric turbulence (along-wind direction) is described in the paper and is compatible with the methodology of the Brazilian wind code NBR-6123. A brief analysis of the transversal response due to vortex shedding is presented according to the Canadian Wind Code NBCC. It is observed that, due to the low frequency of the structure, the dynamic approach leads to results significantly larger than those obtained from applying the conventional static approach of gust wind speed. The presence of the neighborhood have increased the loads on the structures.Este trabalho apresenta os resultados da determinação teórico-experimental do comportamento aerodinâmico de uma chaminé esbelta de concreto armado, com 150m de altura e esbeltez 30. Foram construídos dois modelos reduzidos: um rígido para medição das pressões e outro aeroelástico, reproduzindo as principais características dinâmicas da estrutura real. A resposta dinâmica à turbulência atmosférica é descrita no trabalho, compatível com a metodologia da NBR-6123. Também é apresentada uma análise da resposta transversal ao desprendimento de vórtices, segundo o método da Norma Canadense NBCC. Devido à baixa frequência fundamental da estrutura, o método dinâmico conduz a esforços significativamente maiores do que aqueles obtidos com o método estático convencional de velocidade de rajada. Observa-se também que a presença da vizinhança influenciou negativamente os resultados, majorando os esforços atuantes nas estruturas.Palavras-chave: vento, chaminés, resposta dinâmica, túnel de vento, modelagem aeroelástica.

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Across-wind vibrations of structure of circular cross-section. Part II. Development of a mathematical model for full-scale application

Cited by 86 publications

References 6 publications

Wind loads on heliostats and photovoltaic trackers at various Reynolds numbers

Wind loads on heliostats and photovoltaic trackers at various Reynolds numbers

A modified wake oscillator model for vortex-induced vibration of circular cylinders for a wide range of mass-damping ratio

Aerodynamic effects on a high slenderness concrete chimney

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