DualSPHysics: from fluid dynamics to multiphysics problems

Domínguez, José M.; Fourtakas, Georgios; Altomare, Corrado; Canelas, Ricardo B.; Tafuni, Angelantonio; García-Feal, Orlando; Martínez-Estévez, Iván; Mokos, Athanasios; Vacondio, Renato; Crespo, A. J. C.; Rogers, Benedict D.; Stansby, Peter; Gómez‐Gesteira, M.

doi:10.1007/s40571-021-00404-2

Cited by 170 publications

(108 citation statements)

References 117 publications

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“…For the present study, DualSPHysics v5.0 [29,38,39] coupled with CHRONO Engine are used to solve the hydrodynamics and simultaneously consider the collisions and interactions between container and floor.…”

Section: Methodsmentioning

confidence: 99%

“…In order to address the aforementioned issues, the newly implemented DualSPHysics-CHRONO coupling in DualSPHysics v5.0 [38,39] is used to model the container trajectories measured in Stolle et al [21,22]. This is, additionally, a first necessary step to study the feasibility of such approach and successively extending their use for flow-debris-structure interactions.…”

Section: Introductionmentioning

confidence: 99%

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Numerical Modelling of Flow-Debris Interaction during Extreme Hydrodynamic Events with DualSPHysics-CHRONO

et al. 2021

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Floods can transport debris of a very wide range of dimensions, from cohesive sediments to large floating debris, such as trees and cars. The latter increases the risk associated with floods by, for example, obstructing the flow or damaging structures due to impact. The transport of this type of debris and their interaction with structures are often studied experimentally in the context of tsunamis and flash floods. Numerical studies on this problem are rare, therefore the present study focuses on the numerical modelling of the flow-debris interaction. This is achieved by simulating multiple laboratory experiments, available in the literature, of a single buoyant container transported by a dam-break flow in order to validate the chosen numerical approach. The numerical simulations are carried using the open source DualSPHysics model based on the smoothed particle hydrodynamics method coupled with the multi-physics engine CHRONO, which handles the container–bottom interactions. The trajectory, as well as the velocity of the centroid of the container, were tracked throughout the simulation and compared with the same quantities measured in the laboratory. The agreement between the model and the experiment results is quantitatively assessed using the normalised root mean squared error and it is shown that the model is accurate in reproducing the floating container trajectory and velocity.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Numerical Modelling of Flow-Debris Interaction during Extreme Hydrodynamic Events with DualSPHysics-CHRONO

et al. 2021

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“…A hybrid of the first and third classes has also been proposed [22]. The method herein proposed belongs to the third class and may be considered an extension of the dynamic boundary condition (DBC) currently used in the online version of DualSPHysics [23].…”

Section: Introductionmentioning

confidence: 99%

“…DualSPHysics [23] is an open source SPH code for simulating free-surface flows that is able to run on both CPUs and GPUs (graphics processing units) [24]. Using DBC, complex geometries can be created such as those in [3,8] and [9].…”

Section: Introductionmentioning

confidence: 99%

Modified dynamic boundary conditions (mDBC) for general-purpose smoothed particle hydrodynamics (SPH): application to tank sloshing, dam break and fish pass problems

et al. 2021

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Dynamic boundary conditions (DBC) for solid surfaces are standard in the weakly compressible smoothed particle hydrodynamics (SPH) code DualSPHysics. A stationary solid is simply represented by fixed particles with pressure from the equation of state. Boundaries are easy to set up and computations are relatively stable and efficient, providing robust numerical simulation for complex geometries. However, a small unphysical gap between the fluid and solid boundaries can form, decreasing the accuracy of pressures measured on the boundary. A method is presented where the density of solid particles is obtained from ghost positions within the fluid domain by linear extrapolation. With this approach, the gap between fluid and boundary is reduced and pressures in still water converge to hydrostatic, including the case of a bed with a sharp corner. The violent free-surface cases of a sloshing tank and dam break impact on an obstacle show pressures measured directly on solid surfaces in close agreement with experiments. The complex 3-D flow in a fish pass, with baffles to divert the flow, is simulated showing close agreement with measured water levels with weirs open and gates closed, but less close with gates open and weirs closed. This indicates the method is suitable for rapidly varying free-surface flows, but development for complex turbulent flows is necessary. The code with the modified dynamic boundary condition (mDBC) is available in DualSPHysics to run on CPUs or GPUs.

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“…The SPH solver used in this study, namely DualSPHysics [15,16], is open-source solver that exploits the computation acceleration provided by a graphics processing unit (GPU) for the calculation of the hydrodynamic equations. This parallel architecture is shown to increase the computation speed by orders of magnitude [17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Simulation of flow past a sphere on a rough bed using smoothed particle hydrodynamics (SPH)

Bartzke

Fourtakas

Canelas³

et al. 2021

Comp. Part. Mech.

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This paper presents an investigation of flow past a sphere on a rough surface by means of simulation using the meshless numerical method, smoothed particle hydrodynamics (SPH) in the presence of a free surface. A representative of natural and engineered objects is spherical wall-mounted bodies. These are ideal to study the flow conditions around hydraulic structures, boulders, fish habitat structures or even architectural structures. The aim is to understand their effect on the hydrodynamics around the larger object sphere resting on them and their interaction. The Lagrangian particle-based scheme SPH using the open-source code DualSPHysics is validated against datasets from a laboratory-based flume experiment. The validation case was selected from the family of the flow past a sphere test cases since it reproduces the flow features in a simplified manner that can be observed in the vicinity of natural sediment grains or larger bodies. The validation results include flow velocity profiles in the vicinity of the large sphere and comparison with experiment data. The results stand in overall agreement with the experimental velocity and force measurements that demonstrates the applicability of SPH in aquatic environments. An SPH investigation on a rough bed in combination with objects/body near the bed in the presence of a free-surface flow has not been shown before in the literature. This is a novel application with insight into the fluid mechanics made possible by using DualSPHysics solver.

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DualSPHysics: from fluid dynamics to multiphysics problems

Cited by 170 publications

References 117 publications

Numerical Modelling of Flow-Debris Interaction during Extreme Hydrodynamic Events with DualSPHysics-CHRONO

Numerical Modelling of Flow-Debris Interaction during Extreme Hydrodynamic Events with DualSPHysics-CHRONO

Modified dynamic boundary conditions (mDBC) for general-purpose smoothed particle hydrodynamics (SPH): application to tank sloshing, dam break and fish pass problems

Simulation of flow past a sphere on a rough bed using smoothed particle hydrodynamics (SPH)

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