CFD-based aeroelastic characterization of streamlined bridge deck cross-sections subject to shape modifications using surrogate models

Montoya, Miguel Cid; Nieto, Francisco Javier Fernández; Hernández, Santiago; Kusano, Ibuki; Álvarez, A.; Jurado, J. Á.

doi:10.1016/j.jweia.2018.01.014

Cited by 65 publications

(21 citation statements)

References 77 publications

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“…In all the cases, the force coefficients are moderate at low angles of attack. The slopes of the lift and moment coefficients provide qualitative information concerning the expected flutter response of a bridge deck, since positive low value slopes are associated to a feasible aeroelastic performance [17]. In this respect, in all the cases, the slopes of the lift and moment coefficients are positive, and they decrease as the gap distance augments, which signals the positive effect caused on the flutter velocity due to the increase in the gap distance.…”

Section: Force Coefficients Resultsmentioning

confidence: 93%

Wind Tunnel Study on the Effect of the Gap Width in the Aerodynamic and Aeroelastic Responses of Twin-Box Decks

Nieto

Montoya

Fontán

et al. 2018

Advances in Fluid Mechanics XII

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Twin-box decks have recently been introduced in long-span bridges because this type of slotted crosssection provides flutter critical wind speeds higher than mono-box streamlined decks for flexible structures. The two parallel girders are linked together by means of transverse beams with a central gap between them. Experimental and CFD studies have shown that the length of this central gap plays a key role in the aerodynamic and aeroelastic responses of the deck. In this work, the geometry of the Stonecutters Bridge in Hong Kong (China) has been chosen as an application case to conduct a series of parametric studies based on wind tunnel tests. The tests have been conducted under smooth flow, for a 1:80 geometric scale sectional model able to modify its slot length. For an ample range of gap lengths, the force coefficients and the flutter derivatives have been obtained. It has been found that the slopes of the lift and moment coefficients suffer important changes with the gap length. In the same manner, it has also been found that the gap distance modifies the values of flutter derivatives. Finally, for a longspan bridge example, the critical flutter speeds for different gaps are obtained, aiming to identify the gap length that provides a safer threshold for the flutter phenomenon. The results reported herein permit the assessment of the impact caused by the gap length in the aerodynamic and aeroelastic responses of twin-box decks.

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Section: Force Coefficients Resultsmentioning

confidence: 93%

Wind Tunnel Study on the Effect of the Gap Width in the Aerodynamic and Aeroelastic Responses of Twin-Box Decks

Nieto

Montoya

Fontán

et al. 2018

Advances in Fluid Mechanics XII

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show abstract

“…As previously stated, the only requirement is that the applications involved in the loop can interact via the CLI. In references [3,[24][25][26][27][28][29][30][31][32][33], few examples using Dakota to control complex engineering design loops are discussed. However, none of them addressed the use of a fully parametric cloud-based CAD tool to generate the solid geometry or the use of the cloud to deploy the loop.…”

Section: Description Of the Workflow-methodologymentioning

confidence: 99%

Cloud-Based CAD Parametrization for Design Space Exploration and Design Optimization in Numerical Simulations

Guerrero

Mantelli

Naqvi

2020

Fluids

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In this manuscript, an automated framework dedicated to design space exploration and design optimization studies is presented. The framework integrates a set of numerical simulation, computer-aided design, numerical optimization, and data analytics tools using scripting capabilities. The tools used are open-source and freeware, and can be deployed on any platform. The main feature of the proposed methodology is the use of a cloud-based parametrical computer-aided design application, which allows the user to change any parametric variable defined in the solid model. We demonstrate the capabilities and flexibility of the framework using computational fluid dynamics applications; however, the same workflow can be used with any numerical simulation tool (e.g., a structural solver or a spread-sheet) that is able to interact via a command-line interface or using scripting languages. We conduct design space exploration and design optimization studies using quantitative and qualitative metrics, and, to reduce the high computing times and computational resources intrinsic to these kinds of studies, concurrent simulations and surrogate-based optimization are used.

show abstract

“…As previously stated, the only requirement is that the applications involved in the loop are able to interact via the CLI. In references [3,[24][25][26][27][28][29][30][31][32][33], few examples using Dakota to control complex engineering design loops are discussed. However, none of them addressed the use of a fully parametric cloud-based CAD tool to generate the solid geometry or the use of the cloud to deploy the loop.…”

Section: Description Of the Workflow -Methodologymentioning

confidence: 99%

Cloud-Based CAD Parametrization for Design Space Exploration and Design Optimization in Numerical Simulations

Guerrero¹,

Mantelli²,

Naqvi³

2020

Preprint

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In this manuscript, an automated framework dedicated to design space exploration and design optimization studies is presented. The framework integrates a set of numerical simulation, computer-aided design, numerical optimization, and data analytics tools using scripting capabilities. The tools used are open-source and freeware, and can be deployed on any platform. The main feature of the proposed methodology is the use of a cloud-based parametrical computer-aided design application, which allows the user to change any parametric variable defined in the solid model. We demonstrate the capabilities and flexibility of the framework using computational fluid dynamics applications; however, the same workflow can be used with any numerical simulation tool (e.g., a structural solver or a spread-sheet) that is able to interact via a command line interface or using scripting languages. We conduct design space exploration and design optimization studies using quantitative and qualitative metrics, and to reduce the high computing times and computational resources intrinsic to these kinds of studies, concurrent simulations and surrogate-based optimization are used.

show abstract

CFD-based aeroelastic characterization of streamlined bridge deck cross-sections subject to shape modifications using surrogate models

Cited by 65 publications

References 77 publications

Wind Tunnel Study on the Effect of the Gap Width in the Aerodynamic and Aeroelastic Responses of Twin-Box Decks

Wind Tunnel Study on the Effect of the Gap Width in the Aerodynamic and Aeroelastic Responses of Twin-Box Decks

Cloud-Based CAD Parametrization for Design Space Exploration and Design Optimization in Numerical Simulations

Cloud-Based CAD Parametrization for Design Space Exploration and Design Optimization in Numerical Simulations

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