Influence of fluid-structure interaction on vortex induced vibration and lock-in phenomena in long span bridges

Nariman, Nazim Abdul

doi:10.1007/s11709-016-0353-y

Cited by 10 publications

(3 citation statements)

References 71 publications

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“…The elastic thin plate is one of the most common simplified models, such as turbine blades, water tanks, and thin-walled structures on equipment casings that can be simplified to elastic sheet problems [13][14][15][16][17][18][19]. For the fluid-solid coupling problem of elastic thin plates, the research mainly focuses on the numerical analysis of dynamic and static problems of coupled systems [15,[20][21][22]. In the study of the description of the deformable plate and fluid interaction, the compatible Lagrangian-Eulerian method can be used.…”

Section: Introductionmentioning

confidence: 99%

Experimental study on vibration characteristics of fluid-solid coupling cantilever thin aluminum plate

Yinhanga¹,

Hanyanga²,

Meilingb³

et al. 2020

J. vibroeng.

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Compared with the general environment, the modal characteristics of structures under fluid-solid coupling will show great differences. Reasonable experimental methods can provide reliable conclusion support for fluid-solid coupling research. In order to explore the modal characteristics of structures under the action of fluids, the interference and finite element numerical calculation methods are used to study the dry and wet modal characteristics of the cantilever aluminum plate under fluid-solid coupling. According to the amplitude fluctuation resonance discrimination method, the resonant frequency and mode of the cantilever aluminum plate under different working conditions are obtained accurately. Experiments show that the effect of the fluid will greatly reduce the natural frequency of the structure and have little effect on the vibration mode. With the gradual increase of the fluid-solid coupling interface, the natural frequency drop rate and the amplitude at the gas-liquid interface remain consistent, and slightly ahead of the amplitude characteristics. At the same time, for each mode with the same characteristics, the frequency decreasing trend is linear, such as the first few pure bending vibration modes, and the first few bending and twisting combined vibration modes contain first-order twisting vibration. The experimental results and the finite element numerical results are in good agreement, which shows that the electronic speckle method is a good test method for studying fluid-solid coupling modes. Most importantly, the experimental conclusion has reliable reference value for practical engineering applications.

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Section: Introductionmentioning

confidence: 99%

Experimental study on vibration characteristics of fluid-solid coupling cantilever thin aluminum plate

Yinhanga¹,

Hanyanga²,

Meilingb³

et al. 2020

J. vibroeng.

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show abstract

“…Xihoumen Bridge [13], Humen Bridge [14], Rio-Niteroi Bridge [15], and Second Severn Bridge [16], have experienced obvious VIV. Therefore, research on VIV suppression measures of long-span bridges is vital [17].…”

Section: Introductionmentioning

confidence: 99%

Study on the Suppression Effect on Vortex-Induced Vibration of Double-Deck Truss Girder by the Spatial Position of the Deflector Plate

Yao,

Wu,

Yang

et al. 2023

Applied Sciences

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This paper carried out wind tunnel tests and numerical analysis to study the effect of the spatial position of deflector plates on the vortex-induced vibration (VIV) of a double-deck truss girder. The wind tunnel tests found that setting the web deflector plate and the lower chord deflector plate significantly suppressed the VIV. In order to study the suppression mechanism of the deflector plate on VIV, numerical simulations were conducted using the computational fluid dynamics (CFD) method. We analyzed the suppression mechanism of the deflector plate on VIV by combining the vertical amplitude obtained by numerical simulation with the change in the vorticity magnitude and direction. The results showed that the flow velocity around the lower surface of the airflow was reduced, resulting in significantly lower vorticity at the exact position of the lower chord deflector plate and web deflector plate section compared to the original section. The web deflector plate and the lower chord deflector plate broke the vortex shedding mode in the wake flow region, and the vortex shedding frequency was far away from the self-oscillation frequency of the double-deck truss girder, thus suppressing the VIV.

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“…The fluid–structure interaction (FSI) theory was initially employed to resolve aeroelastic issues in the aviation field. This theory has been broadly utilized in aerospace, water conservancy construction, and the petrochemical and biological fields (Dettmer & Peric, 2006; Nariman, 2016; Aliabadi et al ., 2020; Smith et al ., 2020). Some scholars currently apply two FSI methods, one‐way and two‐way FSI, to simulate the hydraulic performance of PC emitters.…”

Section: Introductionmentioning

confidence: 99%

Flow characteristics and diaphragm deformation of pressure‐compensating drip irrigation emitters*

Chen

Wei

et al. 2021

Irrigation and Drainage

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Pressure-compensating (PC) emitters are extensively utilized because they can enhance the irrigation uniformity and the terrain adaptability of drip irrigation systems. To examine the interaction between the elastic diaphragm and fluid of PC emitters, the internal flow behaviour and the diaphragm deformation of PC emitters were studied by one-way and two-way fluid-structure interaction (FSI) numerical simulation methods. The deformation characteristics of the elastic diaphragm, the change of the outflow section around the outlet of the pressure-compensating chamber, and the pressure and velocity distribution of the flow field were analysed in this study. The results illustrate that the deformation process of an elastic diaphragm during the entire working process could be divided into three phases: rapid deformation, slow deformation, and long-term tiny deformation. After the diaphragm contacted convex land, the overflow groove was the only channel where water could flow out of the PC emitters; and as working pressure increased, the increment of the diaphragm deformation was extremely tiny. However, it was the tiny deformation of the elastic diaphragm that maintained the flow rate of the PC emitters constant over a wide range of working pressures. The results can provide references for exploring the pressure-compensating mechanism of PC emitters and their optimal design. K E Y W O R D S diaphragm deformation, flow behaviour, fluid-structure interaction, pressure-compensating emitter Résumé Les émetteurs autorégulants (PC) sont largement utilisés car ils peuvent améliorer l'uniformité de l'irrigation et l'adaptabilité au terrain des systèmes d'irrigation goutte à goutte. Pour examiner l'interaction entre le diaphragme élastique et le fluide des émetteurs PC, le comportement d'écoulement interne et la déformation du diaphragme des émetteurs PC ont été étudiés par des méthodes de simulation numérique d'interaction fluide-structure (FSI) * Caractéristiques d'écoulement et déformation du diaphragme d'émetteurs d'irrigation goutte à goutte autorégulant

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Influence of fluid-structure interaction on vortex induced vibration and lock-in phenomena in long span bridges

Cited by 10 publications

References 71 publications

Experimental study on vibration characteristics of fluid-solid coupling cantilever thin aluminum plate

Experimental study on vibration characteristics of fluid-solid coupling cantilever thin aluminum plate

Study on the Suppression Effect on Vortex-Induced Vibration of Double-Deck Truss Girder by the Spatial Position of the Deflector Plate

Flow characteristics and diaphragm deformation of pressure‐compensating drip irrigation emitters*

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