Computational Fluid Dynamics Based Kriging Prediction on Flutter Derivatives of Flat Steel Box Girders

Li, Jinhua; Zhan, Qiang; Zhang, Yao; Cao, Liyuan; Li, Chunxiang

doi:10.3390/sym14071304

Cited by 4 publications

(3 citation statements)

References 30 publications

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“…Numerical simulation technology is extensively employed in various fields, including aerospace, aviation, shipping, and energy [5][6][7][8], significantly reducing the design cycle for relevant products. Numerical simulation has also been applied to the study of cryogenic cavitation.…”

Section: Introductionmentioning

confidence: 99%

Study on the Influence of Thermodynamic Effects on the Characteristics of Liquid Nitrogen Cavitating Flow around Hydrofoils

Fu,

Gao,

et al. 2023

Symmetry

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Cryogenic cavitation exhibits complexities primarily represented by the coupled interactions of thermodynamic effects, vortices, and cavities during the cavitation process. To further investigate this coupling mechanism, this study employed the DDES turbulence model and Sauer–Schnerr cavitation model to perform unsteady numerical simulations of liquid nitrogen cavitation flow around the NACA0015 Hydrofoil. Numerical validation of the model utilized a symmetrical Hord hydrofoil. The results reveal that the upstream development of the recirculation flow under inverse pressure gradients is the fundamental cause of the detachment in the primary cavitation region. At a cavitation number of 0.616, thermodynamic effects noticeably suppress the formation of cavities and alter the range of adverse pressure gradients, consequently influencing the detachment behavior in the primary cavitation region.

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Section: Introductionmentioning

confidence: 99%

Study on the Influence of Thermodynamic Effects on the Characteristics of Liquid Nitrogen Cavitating Flow around Hydrofoils

Fu,

Gao,

et al. 2023

Symmetry

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“…Li et al [5] have deeply researched the flutter derivative prediction of flat steel box girders based on CFD simulations. Firstly, by taking the flat steel girder section of Qingshan Yangtze River Bridge as the basic section and considering its width and height as the design variables of cross-section shape, the design domain of the cross-section shape was defined by controlling the possible range of variation in cross-section design variables.…”

Section: Introductionmentioning

confidence: 99%

Symmetry in Safety and Disaster Prevention Engineering

Yang

2023

Symmetry

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“…More recently, Brusiani et al [24] pointed out that Reynolds-averaged Navier-Stokes (RANS) approach coupled with the k−ω SST turbulence model, identify the best compromise between accuracy and computational cost. The CFD framework also provides different approximate techniques for the direct calculation of flutter derivatives, some applications are: [25][26][27][28]. Nevertheless, the calculation of the steady-state aerodynamic coefficients requires simpler simulations compared to those required to compute the flutter derivatives, especially in terms of computational effort.…”

Section: Introductionmentioning

confidence: 99%

Preliminary Flutter Stability Assessment of the Double-Deck George Washington Bridge

et al. 2023

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We deal with the flutter analysis of the George Washington bridge, in both the single- and double-deck configurations of 1931 and 1962, respectively. The influence of the additional lower deck on the aerodynamic behavior is investigated. To overcome the lack of aerodynamic data, a simplified approach is followed based on Fung’s formulation, in which the flutter derivatives are expressed in terms of the real and imaginary parts of the Theodorsen function and of the steady-state aerodynamic coefficients of the deck cross-section. The latter are obtained by Computational Fluid Dynamics simulations conducted in ANSYS FLUENT, whereas the ANSYS Mechanical APDL finite element package is used to perform the flutter analyses. Two different methods for the application of the aeroelastic forces are employed for the double-deck configuration: (i) self-excited forces, based on flutter derivatives related to the whole cross-section, acting on the upper deck; and (ii) self-excited forces, based on flutter derivatives related to the single deck, simultaneously applied to the upper and lower decks. The obtained results are critically compared with theoretical predictions of simple formulas available from the literature; it is suggested that laboratory tests are needed since no experimental results seem to be available.

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Computational Fluid Dynamics Based Kriging Prediction on Flutter Derivatives of Flat Steel Box Girders

Cited by 4 publications

References 30 publications

Study on the Influence of Thermodynamic Effects on the Characteristics of Liquid Nitrogen Cavitating Flow around Hydrofoils

Study on the Influence of Thermodynamic Effects on the Characteristics of Liquid Nitrogen Cavitating Flow around Hydrofoils

Symmetry in Safety and Disaster Prevention Engineering

Preliminary Flutter Stability Assessment of the Double-Deck George Washington Bridge

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