Computation of wave loads on the superstructures of coastal highway bridges

Jin, Jun; Meng, Bo

doi:10.1016/j.oceaneng.2011.09.029

Cited by 97 publications

(22 citation statements)

References 17 publications

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“…This computational code solves the flow momentum equations using the finite-volumes, and has been satisfactorily validated by several authors in different flow cases [30][31][32][33][34].…”

Section: Calculationsmentioning

confidence: 98%

Recent Results from Analysis of Flow Structures and Energy Modes Induced by Viscous Wave around a Surface‐Piercing Cylinder

Alfonsi

Lauria

Primavera

2017

Mathematical Problems in Engineering

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Due to its relevance in ocean engineering, the subject of the flow field generated by water waves around a vertical circular cylinder piercing the free surface has recently started to be considered by several research groups. In particular, we studied this problem starting from the velocity-potential framework, then the implementation of the numerical solution of the Euler equations in their velocity-pressure formulation, and finally the performance of the integration of the Navier-Stokes equations in primitive variables. We also developed and applied methods of extraction of the flow coherent structures and most energetic modes. In this work, we present some new results of our research directed, in particular, toward the clarification of the main nonintuitive character of the phenomenon of interaction between a wave and a surface-piercing cylinder, namely, the fact that the wave exerts its maximum force and exhibits its maximum run-up on the cylindrical obstacle at different instants. The understanding of this phenomenon becomes of crucial importance in the perspective of governing the entity of the wave run-up on the obstacle by means of wave-flow-control techniques.

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“…This computational code solves the flow momentum equations using the finite-volumes, and has been satisfactorily validated by several authors in different flow cases [30][31][32][33][34].…”

Section: Calculationsmentioning

confidence: 98%

Recent Results from Analysis of Flow Structures and Energy Modes Induced by Viscous Wave around a Surface‐Piercing Cylinder

Alfonsi

Lauria

Primavera

2017

Mathematical Problems in Engineering

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“…Flow-3D is a widely-known computational code, and in the recent past several authors have performed scientific works directed to its validation. Among others, Kocaman et al [41], Cho [42], Jin and Meng [43], Kim et al [44], and Kayser and Gabr [45] have validated the Flow-3D solver in steady and unsteady problems involving cylinders and free surfaces, always obtaining rather satisfactory results. Though, in the present context, the issue of validation is in some way subtle.…”

Section: Validation Of the Navier-stokes Solvermentioning

confidence: 99%

Numerical Simulations of Wave-Induced Flow Fields around Large-Diameter Surface-Piercing Vertical Circular Cylinder

Alfonsi

2015

Computation

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A computational analysis is performed on the diffraction of water waves induced by large-diameter, surface-piercing, vertical circular cylinder. With reference to linear-wave cases, the phenomenon is preliminarly considered in terms of velocity potential, a simplified theoretical framework in which both hypotheses of inviscid fluid and irrotational flow are incorporated. Then, and as a first-approximation analysis, the Euler equations in primitive variables are considered (a framework in which the fluid is still handled as inviscid, but the field can be rotational). Finally, the real-fluid behavior is analyzed, by numerically integrating the full Navier-Stokes equations (viscous fluid and rotational field) in their velocity-pressure formulation, by following the approach of the Direct Numerical Simulation (DNS, no models are used for the fluctuating portion of the velocity field). For further investigation of the flow fields, the swirling-strength criterion for flow-structure extraction, and the Karhunen-Loève (KL) decomposition technique for the extraction of the most energetic flow modes respectively, are applied to the computed fields. It is found that remarkable differences exist between the wave-induced fields, as derived within the different computing frameworks tested.

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“…Due to the complexity of wave action mechanisms, it is difficult to establish one specific method to cover all of the wave action process in the estimation of the wave force. However, the previous hydrodynamic experiment (Bradner et al, 2011) and numerical simulation (Jin and Meng, 2011) have demonstrated that the maximum wave force is generally applied on the bridge deck in the submerged case. Moreover, some empirical methods for estimating the wave force on bridge decks are also developed based on the submerged state (Jin and Meng, 2011).…”

Section: Introductionmentioning

confidence: 98%

“…However, the previous hydrodynamic experiment (Bradner et al, 2011) and numerical simulation (Jin and Meng, 2011) have demonstrated that the maximum wave force is generally applied on the bridge deck in the submerged case. Moreover, some empirical methods for estimating the wave force on bridge decks are also developed based on the submerged state (Jin and Meng, 2011). Therefore, understanding the wave-structure action mechanism and providing an accurate estimation method for the wave force in the submerged state is a first and important step to gain insight into the whole interaction process and to establish a complete method for wave force estimation.…”

Section: Introductionmentioning

confidence: 98%

“…The effects of submersion depth on the wave forces acting on the bridge deck were also studied with the same numerical model (Xiao et al, 2010). Jin and Meng (2011) investigated the wave loads exerted on the bridge deck using the commercial software Flow-3D. Comparison between the simulation results and the AASHTO model indicated that the AASHTO model overestimated the vertical wave forces.…”

Section: Introductionmentioning

confidence: 99%

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