Numerical analysis of hydraulic jumps using OpenFOAM

Bayón, Arnau; Jiménez, Petra Amparo López

doi:10.2166/hydro.2015.041

Cited by 55 publications

(27 citation statements)

References 61 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Bayon-Barrachina and Jimenéz [66] used the open source OpenFOAM code with standard k − , RNG k − , and SST k − ω models to study a 3D classic hydraulic jump with F 1 = 6.1. Results were compared to the experimental relations of Hager [76] and Wu and Rajaratnam [83], among others, obtaining high accuracies.…”

Section: Reynolds-averaged Navier-stokes Approachmentioning

confidence: 99%

Numerical Simulation of Hydraulic Jumps. Part 2: Recent Results and Future Outlook

Viti

Valero

Gualtieri

2018

Water

View full text Add to dashboard Cite

During the past two decades, hydraulic jumps have been investigated using Computational Fluid Dynamics (CFD). The second part of this two-part study is devoted to the state-of-the-art of the numerical simulation of the hydraulic jump. First, the most widely-used CFD approaches, namely the Reynolds-Averaged Navier–Stokes (RANS), the Large Eddy Simulation (LES), the Direct Numerical Simulation (DNS), the hybrid RANS-LES method Detached Eddy Simulation (DES), as well as the Smoothed Particle Hydrodynamics (SPH), are introduced pointing out their main characteristics also in the context of the best practices for CFD modeling of environmental flows. Second, the literature on numerical simulations of the hydraulic jump is presented and discussed. It was observed that the RANS modeling approach is able to provide accurate results for the mean flow variables, while high-fidelity methods, such as LES and DES, can properly reproduce turbulence quantities of the hydraulic jump. Although computationally very expensive, the first DNS on the hydraulic jump led to important findings about the structure of the hydraulic jump and scale effects. Similarly, application of the Lagrangian meshless SPH method provided interesting results, notwithstanding the lower research activity. At the end, despite the promising results still available, it is expected that with the increase in the computational capabilities, the RANS-based numerical studies of the hydraulic jump will approach the prototype scale problems, which are of great relevance for hydraulic engineers, while the application at this scale of the most advanced tools, such as LES and DNS, is still beyond expectations for the foreseeable future. Knowledge of the uncertainty associated with RANS modeling may allow the careful design of new hydraulic structures through the available CFD tools.

show abstract

Section: Reynolds-averaged Navier-stokes Approachmentioning

confidence: 99%

Numerical Simulation of Hydraulic Jumps. Part 2: Recent Results and Future Outlook

Viti

Valero

Gualtieri

2018

Water

View full text Add to dashboard Cite

show abstract

“…Despite the apparent severity of the numerical model simplifications, the suitability of this approach has been proven in the past by a number of authors who employed similar techniques to evaluate the performance of coastal structures under wave attacks (see Higuera et al [23], Tsai et al [42], and Castellino et al [14]) and other hydraulic applications involving complex air-water interactions (see Bayon and Lopez-Jimenez [43], and Bayon et al [44,45]). Table 3 shows the characteristics of the crown wall and parapets referred to in the parameters depicted in Figure 1b.…”

Section: Numerical Modelmentioning

confidence: 99%

Influence of Parapets on Wave Overtopping on Mound Breakwaters with Crown Walls

et al. 2019

View full text Add to dashboard Cite

Background literature on the influence of parapets on the overtopping of mound breakwaters is limited. In this study, numerical tests were conducted using computational fluid dynamics (CFD) to analyze the influence of nine crown wall geometries (seven with parapets). The CFD model was implemented in OpenFOAM ® and successfully validated with laboratory tests. A new estimator of the dimensionless mean wave-overtopping discharges (logQ) on structures with parapets is proposed. The new estimator depends on the estimation of logQ of the same structure without a parapet. The effects on wave overtopping of the parapet angle (ε p ), parapet width (w p ), and parapet height (h p ) were analyzed. Low values of ε p and w p /h p ≈ 1 produced the highest parapet effectiveness to reduce the mean wave-overtopping discharges.

show abstract

“…This study resolves 3D flow structures in meandering channels using the 3D RANS equations, which are solved with OpenFOAM, an open-source computational fluid dynamics library based on the finite volume method. The OpenFOAM-based RANS models have been extensively used for analysis of open channel flows including bed erosion [28,38], hydraulic jump [39][40][41], spillway jet [41], flows around hydraulic structures [42][43][44], and coupled flows with porous media [45]. For incompressible fluid flows, the 3D RANS model adopts the Reynold approximation of continuity and momentum equations as follows:…”

Section: Hydrodynamic Modelmentioning

confidence: 99%

Evaluating the Impact of Turbulence Closure Models on Solute Transport Simulations in Meandering Open Channels

2020

View full text Add to dashboard Cite

River meanders form complex 3D flow patterns, including secondary flows and flow separation. In particular, the flow separation traps solutes and delays their transport via storage effects associated with recirculating flows. The simulation of the separated flows highly relies in the performance of turbulence models. Thus, these closure schemes can control dispersion behaviors simulated in rivers. This study performs 3D simulations to quantify the impact of the turbulence models on solute transport simulations in channels under different sinuosity conditions. The 3D Reynolds-averaged Navier-Stokes equations coupled with the k − ε , k − ω and SST k − ω models are adopted for flow simulations. The 3D Lagrangian particle-tracking model simulates solute transport. An increase in sinuosity causes strong transverse gradients of mean velocity, thereby driving the onset of the separated flow recirculation along the outer bank. Here, the onset and extent of the flow separation are strongly influenced by the turbulence models. The k − ε model fails to reproduce the flow separation or underestimates its size. As a result, the k − ε model yields residence times shorter than those of other models. In contrast, the SST k − ω model exhibits a strong tailing of breakthrough curves by generating more pronounced flow separation.

show abstract

Numerical analysis of hydraulic jumps using OpenFOAM

Abstract: The present paper deals with the hydraulic jump study, characterization and numerical modeling.

Cited by 55 publications

References 61 publications

Numerical Simulation of Hydraulic Jumps. Part 2: Recent Results and Future Outlook

Numerical Simulation of Hydraulic Jumps. Part 2: Recent Results and Future Outlook

Influence of Parapets on Wave Overtopping on Mound Breakwaters with Crown Walls

Evaluating the Impact of Turbulence Closure Models on Solute Transport Simulations in Meandering Open Channels

Contact Info

Product

Resources

About