Shockwaves in spillways with the particle finite element method

Salazar, Fernando; Mauro, Javier San; Celigueta, Miguel Ángel; Oñate, Eugenio

doi:10.1007/s40571-019-00252-1

Cited by 9 publications

(11 citation statements)

References 34 publications

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“…Several examples of its successful application to complex non-linear problems can be found in the literature, e.g. [30,4,36,25,6,11], just to mention some of the most recently published PFEM-based formulations.…”

Section: Pfem Remesh and Uid-solid Interface Detectionmentioning

confidence: 99%

Lagrangian finite element method with nodal integration for fluid–solid interaction

Franci

2020

Comp. Part. Mech.

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This work presents a fully LagrangianFinite Element Method (FEM) with nodal integration for the simulation of Fluid-Structure Interaction (FSI) problems. The Particle Finite Element Method (PFEM) is used to solve the incompressible uids and to track their evolving free surface, while the solid bodies are modeled with the standard FEM. The coupled problem is solved through a monolithic approach to ensure a strong FSI coupling. Accuracy and convergence of the proposed nodal integration method are proved against several benchmark tests, involving complex interactions between unsteady free-surface uids and solids undergoing large displacements. A very good agreement with the numerical and experimental results of the literature is obtained. The numerical results of the nodal integration algorithm are also compared to those given by a standard Gaussian method and their upperbound convergent behavior is also discussed.

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Section: Pfem Remesh and Uid-solid Interface Detectionmentioning

confidence: 99%

Lagrangian finite element method with nodal integration for fluid–solid interaction

Franci

2020

Comp. Part. Mech.

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“…Ryzhakov et al [110] presents an inlet technique in which the inflow region is treated in a standard Lagrangian form: the nodes belonging to the boundary move with the prescribed velocity creating empty space which is then replaced with a new set of nodes. In [119], the same technique was used to simulate hydraulic channel conditions. Cremonesi et al [20] suggests describing the inflow as an Eulerian boundary and the rest of the domain as Lagrangian.…”

Section: Inflow and Outflowmentioning

confidence: 99%

“…Salazar et al [118] studied a real dam geometry and modelled the 3D air-water interaction to estimate the air demand at the bottom outlets. On the other hand [119] focused on the water shock-waves that form at the exit of dam spillways. Figure 18, taken from [119], shows a view of the real dam spillway and the 3D simulation with PFEM.…”

Section: Hydraulic Engineeringmentioning

confidence: 99%

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A State of the Art Review of the Particle Finite Element Method (PFEM)

Cremonesi

Franci

Idelsohn

et al. 2020

Arch Computat Methods Eng

Self Cite

102

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The particle finite element method (PFEM) is a powerful and robust numerical tool for the simulation of multi-physics problems in evolving domains. The PFEM exploits the Lagrangian framework to automatically identify and follow interfaces between different materials (e.g. fluid–fluid, fluid–solid or free surfaces). The method solves the governing equations with the standard finite element method and overcomes mesh distortion issues using a fast and efficient remeshing procedure. The flexibility and robustness of the method together with its capability for dealing with large topological variations of the computational domains, explain its success for solving a wide range of industrial and engineering problems. This paper provides an extended overview of the theory and applications of the method, giving the tools required to understand the PFEM from its basic ideas to the more advanced applications. Moreover, this work aims to confirm the flexibility and robustness of the PFEM for a broad range of engineering applications. Furthermore, presenting the advantages and disadvantages of the method, this overview can be the starting point for improvements of PFEM technology and for widening its application fields.

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“…There are other limitations of physical models, such as the effect of scaling, where they may be unable to capture behaviour such as cavitation and tension of surface readily. Applying different scenarios in the physical model is difficult or impossible and difficult to visualise or understand turbulent flows [7][8][9]. The behaviour of flow over spillways can be studied in a short time and without paying high expenses by using the numerical model [10,11].…”

Section: Introductionmentioning

confidence: 99%

Modelling of Flow Patterns over Spillway with CFD (Case Study: Haditha Dam in Iraq)

Almawla¹,

Kamel²,

Lateef³

2021

IJDNE

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Spillways are designing to release surplus water over a volume of storage. The excess water flows from the top of the reservoir and is carried back to the river by a spillway. Many radial gates were destroyed under hydrodynamic load. Radial gate connectors are susceptible to fatigue failure due to excessive vibration; therefore, gate vibration during operation must be investigated to confirm safe operation at the design water pressure. Several studies were carried out to analyse and simulation of flow over the spillway. In this article, the flow pattern over the Haditha dam spillway has been simulated using computational fluid dynamics (CFD). The numerical model was performed using Ansys Fluent 2020 R1 to simulate the flow properties; determination of cavitation damage at three discharges corresponding in the design of Haditha dam are 4700, 7140, and 7900 m3/s. In addition to finding the effect of gate vibration under dynamic water loads. The Realisable k-ɛ turbulence model was utilised with the volume of fluid (VOF) model to simulate the interaction between air and water phases. The validation of the numerical model was achieved by comparing it with a physical model. The physical model of the Haditha Dam spillway was made from iron with a scale of 1:110. It has been designed and constructed in a hydraulic laboratory according to the modelling principle of the hydraulic structure. The results showed that a high agreement between the physical and numerical model and the k-ɛ turbulence model could simulate the Haditha dam spillway with low cost and few times. The cavitation damage may occur at the region start at the end of the arching spillway to stretches downstream, and there is no damage of gate vibration under dynamic water load.

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Shockwaves in spillways with the particle finite element method

Abstract: Changes in direction and cross-section in supercritical hydraulic channels generate shockwaves which result in increase in flow depth with re-

Cited by 9 publications

References 34 publications

Lagrangian finite element method with nodal integration for fluid–solid interaction

Lagrangian finite element method with nodal integration for fluid–solid interaction

A State of the Art Review of the Particle Finite Element Method (PFEM)

Modelling of Flow Patterns over Spillway with CFD (Case Study: Haditha Dam in Iraq)

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