SPHERA v.9.0.0: A Computational Fluid Dynamics research code, based on the Smoothed Particle Hydrodynamics mesh-less method

Amicarelli, Andrea; Manenti, Sauro; Albano, Raffaele; Agate, Giordano; Paggi, Marco; Longoni, Laura; Mirauda, Domenica; Ziane, Latifa; Viccione, Giacomo; Todeschini, Sara; Sole, Aurelia; Baldini, Lara Martina; Brambilla, Davide; Papini, Monica; Khellaf, Mohamed Cherif; Tagliafierro, Bonaventura; Sarno, Luca; Pirovano, Guido

doi:10.1016/j.cpc.2020.107157

Cited by 47 publications

(23 citation statements)

References 53 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The two advanced boundary treatment methods implemented in the SPHERA model [54], described respectively in sub-sections 2.1 and 2.2, were validated with data from the experimental dam-break event carried out by the authors of [55] (see Section 3). In order to represent a sudden and complete dam-break, at the onset of the computation, water held under hydrostatic conditions is immediately released, rather than what occurs in the experimental setup, where the water is released gradually from a gate.…”

Section: Resultsmentioning

confidence: 99%

“…The SPH model used for this study is SPHERA v.9.0.0 [54]. The following sub-sections describe the numerical schemes of the code relevant to this study with an emphasis on the two advanced boundary treatment methods adopted.…”

Section: The Numerical Modelmentioning

confidence: 99%

“…In this context, this paper aims at validating the open source SPH research code SPHERA [54] by applying two advanced boundary treatment methods distinct from those implemented in other recently developed SPH methods, through the experimental 2D dam-break flow measurements conducted by the authors of [55] and simulated using a laboratory set-up resembling the set-up reported in [56]. The first boundary treatment scheme [57] represents a numerical variant of the semi-analytical approach of [58], and is based on the computation of volume integrals within the truncated portions of the kernel supports at the boundaries.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Smoothed Particle Hydrodynamics Modeling with Advanced Boundary Conditions for Two-Dimensional Dam-Break Floods

Mirauda

Albano

Sole

et al. 2020

Water

Self Cite

View full text Add to dashboard Cite

To simulate the dynamics of two-dimensional dam-break flow on a dry horizontal bed, we use a smoothed particle hydrodynamics model implementing two advanced boundary treatment techniques: (i) a semi-analytical approach, based on the computation of volume integrals within the truncated portions of the kernel supports at boundaries and (ii) an extension of the ghost-particle boundary method for mobile boundaries, adapted to free-slip conditions. The trends of the free surface along the channel, and of the impact wave pressures on the downstream vertical wall, were first validated against an experimental case study and then compared with other numerical solutions. The two boundary treatment schemes accurately predicted the overall shape of the primary wave front advancing along the dry bed until its impact with the downstream vertical wall. Compared to data from numerical models in the literature, the present results showed a closer fit to an experimental secondary wave, reflected by the downstream wall and characterized by complex vortex structures. The results showed the reliability of both the proposed boundary condition schemes in resolving violent wave breaking and impact events of a practical dam-break application, producing smooth pressure fields and accurately predicting pressure and water level peaks. compared to 3D CFD (computational fluid dynamics) equations [1,2]. However, given their meshing features, assumptions regarding hydrostatic pressure, and neglect of vertical velocity and flow velocity uniformity along the vertical axis [3,4], traditional numerical solutions to SWEs cannot effectively reproduce the strong distortion of the free surface that occurs in dam-break flows.Mesh-free models, such as smoothed particle hydrodynamics (SPH), offer an alternative to solving SWEs with grid-based numerical methods and have, accordingly, been applied to several areas of computational fluid dynamics [5,6]. The SPH method presents different advantages: mesh deformation and cracking; calculation of the system's advection and transport (due to its Lagrangian nature); modeling of free surface and phase/fluid interface problems; the ability to manage very large deformations in high-energy phenomena (e.g., explosions, high-velocity impacts, and penetrations); applicability at multiple scales if coupled with molecular dynamics and dissipative particle dynamics; and greater suitability to 3D-modeling than mesh-based methods [7,8]. In addition, should a "weakly compressible" approach be adopted, the non-iterative SPH algorithms are simplified [8].The limits of SPH models are linked to slightly higher computational costs, complex procedures for the local refining of spatial resolution, and a relatively low accuracy for classical CFD applications where mesh-based models are well-validated (e.g., confined mono-phase flows [8]). However, they are effectively employed in several fields [9][10][11][12][13][14][15][16][17][18].Various flood propagation studies have focused on the use of the SPH method to investigate dam-break ...

show abstract

Section: Resultsmentioning

confidence: 99%

Section: The Numerical Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Smoothed Particle Hydrodynamics Modeling with Advanced Boundary Conditions for Two-Dimensional Dam-Break Floods

Mirauda

Albano

Sole

et al. 2020

Water

Self Cite

View full text Add to dashboard Cite

show abstract

“…The frames in Figure 5 show the simulation results obtained with SPHERA v.9.0.0 [75]; some representative instants were selected during the acceleration phase where the vertical rigid plate pushes the landslide toward the basin, and the subsequent run-out phase of the generated wave climbs the opposite slope. Fairly good results were obtained in terms of the maximum height reached by the rising wave front.…”

Section: Fast Landslides and Dense Granular Flows Interacting With Watermentioning

confidence: 99%

SPH Modeling of Water-Related Natural Hazards

Manenti

Wang

Domínguez

et al. 2019

Water

View full text Add to dashboard Cite

This paper collects some recent smoothed particle hydrodynamic (SPH) applications in the field of natural hazards connected to rapidly varied flows of both water and dense granular mixtures including sediment erosion and bed load transport. The paper gathers together and outlines the basic aspects of some relevant works dealing with flooding on complex topography, sediment scouring, fast landslide dynamics, and induced surge wave. Additionally, the preliminary results of a new study regarding the post-failure dynamics of rainfall-induced shallow landslide are presented. The paper also shows the latest advances in the use of high performance computing (HPC) techniques to accelerate computational fluid dynamic (CFD) codes through the efficient use of current computational resources. This aspect is extremely important when simulating complex three-dimensional problems that require a high computational cost and are generally involved in the modeling of water-related natural hazards of practical interest. The paper provides an overview of some widespread SPH free open source software (FOSS) codes applied to multiphase problems of theoretical and practical interest in the field of hydraulic engineering. The paper aims to provide insight into the SPH modeling of some relevant physical aspects involved in water-related natural hazards (e.g., sediment erosion and non-Newtonian rheology). The future perspectives of SPH in this application field are finally pointed out.

show abstract

“…Some meshless methods have appeared over the last decade and grown in popularity as they can be applied to highly nonlinear problems in arbitrarily complex geometries -difficult to be solved by mesh-based methods instead [6]. Among the others, Smoothed Particle Hydrodynamics (SPH) meshless technique is the most popular, having attained the required level of maturity to be used for engineering purposes [7].…”

Section: Introductionmentioning

confidence: 99%

A New Open Source Solver for Modelling Fluid-Structure Interaction: Case Study of a Point-Absorber Wave Energy Converter With Power Take-Off Unit

Tagliafierro¹,

Montuori²,

Vayas³

et al. 2020

XI International Conference on Structural Dynamics

Self Cite

View full text Add to dashboard Cite

SPHERA v.9.0.0: A Computational Fluid Dynamics research code, based on the Smoothed Particle Hydrodynamics mesh-less method

Cited by 47 publications

References 53 publications

Smoothed Particle Hydrodynamics Modeling with Advanced Boundary Conditions for Two-Dimensional Dam-Break Floods

Smoothed Particle Hydrodynamics Modeling with Advanced Boundary Conditions for Two-Dimensional Dam-Break Floods

SPH Modeling of Water-Related Natural Hazards

A New Open Source Solver for Modelling Fluid-Structure Interaction: Case Study of a Point-Absorber Wave Energy Converter With Power Take-Off Unit

Contact Info

Product

Resources

About