Incompressible Smoothed Particle Hydrodynamics Simulations of Fluid-Structure Interaction on Free Surface Flows

2014 ◽  
Vol 41 (6) ◽  
pp. 471-484 ◽  
Author(s):  
Abdelraheem M. Aly ◽  
Mitsuteru Asai
Keyword(s):  
Free Surface ◽  
Smoothed Particle Hydrodynamics ◽  
Fluid Structure Interaction ◽  
Free Surface Flows ◽  
Surface Flows ◽  
Fluid Structure ◽  
Structure Interaction ◽  
Particle Hydrodynamics ◽  
Smoothed Particle ◽  
Incompressible Smoothed Particle Hydrodynamics

Fluid-Structure Interaction Simulation With Free Surface Flows by Smoothed Particle Hydrodynamics

2008 ◽  
Author(s):  
M. H. Farahani ◽  
N. Amanifard ◽  
H. Asadi ◽  
M. Mahnama
Keyword(s):  
Free Surface ◽  
Fluid Structure Interaction ◽  
Free Surface Flows ◽  
Surface Flows ◽  
Fluid Structure ◽  
Structure Interaction ◽  
Particle Hydrodynamics ◽  
Smoothed Particle ◽  
Incompressibility Constraint ◽  
Sph Algorithm

Simulation of the fluid-structure interaction (FSI) and free surface flows includes an area of extremely challenging problems in the computational mechanics community. In this paper, a newly proposed SPH algorithm is employed to simulate FSI problems with complex free surface flows. In this way, fluid and elastic structure continua are coupled using a monolithic but explicit numerical scheme. The proposed method is similar to so-called SPH projection method and consists of three steps. The first two steps play the role of prediction, while in the third step a Poisson equation is used for both fluid and structure to impose incompressibility constraint.

A new surface tension formulation in smoothed particle hydrodynamics for free-surface flows

2021 ◽  
pp. 110203
Author(s):  
Wen-Bin Liu ◽  
Dong-Jun Ma ◽  
Ming-Yu Zhang ◽  
An-Min He ◽  
Nan-Sheng Liu ◽  
...  
Keyword(s):  
Surface Tension ◽  
Free Surface ◽  
Smoothed Particle Hydrodynamics ◽  
Free Surface Flows ◽  
Surface Flows ◽  
Particle Hydrodynamics ◽  
Smoothed Particle

scholarly journals Dealing with the Effect of Air in Fluid Structure Interaction by Coupled SPH-FEM Methods

Materials ◽  
2019 ◽  
Vol 12 (7) ◽  
pp. 1162 ◽  
Author(s):  
Cristiano Fragassa ◽  
Marko Topalovic ◽  
Ana Pavlovic ◽  
Snezana Vulovic
Keyword(s):  
Finite Element Method ◽  
Smoothed Particle Hydrodynamics ◽  
Computational Models ◽  
Fluid Structure Interaction ◽  
The Finite Element Method ◽  
Fluid Structure ◽  
Structure Interaction ◽  
Particle Hydrodynamics ◽  
Smoothed Particle ◽  
High Computational Complexity

Smoothed particle hydrodynamics (SPH) and the finite element method (FEM) are often combined with the scope to model the interaction between structures and the surrounding fluids (FSI). There is the case, for instance, of aircrafts crashing on water or speedboats slamming into waves. Due to the high computational complexity, the influence of air is often neglected, limiting the analysis to the interaction between structure and water. On the contrary, this work aims to specifically investigate the effect of air when merged inside the fluid–structure interaction (FSI) computational models. Measures from experiments were used as a basis to validate estimations comparing results from models that include or exclude the presence of air. Outcomes generally showed a great correlation between simulation and experiments, with marginal differences in terms of accelerations, especially during the first phase of impact and considering the presence of air in the model.

scholarly journals Comment on “Free surface tension in incompressible smoothed particle hydrodynamics (ISPH)” [Comput. Mech. 2020, 65, 487–502]

2021 ◽  
Author(s):  
Fabian Thiery ◽  
Fabian Fritz ◽  
Nikolaus A. Adams ◽  
Stefan Adami
Keyword(s):  
Surface Tension ◽  
Free Surface ◽  
Smoothed Particle Hydrodynamics ◽  
Free Surface Flows ◽  
Work Related ◽  
Classical Formulation ◽  
Particle Hydrodynamics ◽  
Smoothed Particle ◽  
Incompressible Smoothed Particle Hydrodynamics ◽  
Curvature Approximation

AbstractWe comment on a recent article [Comput. Mech. 2020, 65, 487–502] about surface-tension modeling for free-surface flows with Smoothed Particle Hydrodynamics. The authors motivate part of their work related to a novel principal curvature approximation by the wrong claim that the classical curvature formulation in SPH overestimates the curvature in 3D by a factor of 2. In this note we confirm the correctness of the classical formulation and point out the misconception of the commented article.

scholarly journals Fully Coupled Smoothed Particle Hydrodynamics-Finite Element Method Approach for Fluid–Structure Interaction Problems With Large Deflections

2019 ◽  
Vol 141 (8) ◽  
Author(s):  
A. Ersin Dinçer ◽  
Abdullah Demir ◽  
Zafer Bozkuş ◽  
Arris S. Tijsseling
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Numerical Method ◽  
Smoothed Particle Hydrodynamics ◽  
Fluid Structure Interaction ◽  
Elastic Structure ◽  
Fluid Structure ◽  
Structure Interaction ◽  
Particle Hydrodynamics ◽  
Smoothed Particle

Abstract In this study, a combination of the smoothed particle hydrodynamics (SPH) and finite element method (FEM) solving the complex problem of interaction between fluid with free surface and an elastic structure is studied. A brief description of SPH and FEM is presented. Contact mechanics is used for the coupling between fluid and structure, which are simulated with SPH and FEM, respectively. In the proposed method, to couple mesh-free and mesh-based methods, fluid and structure are solved together by a complete stiffness matrix instead of iterative predictive–corrective or master–slave methods. In addition, fully dynamic large-deformation analysis is carried out in FEM by taking into account mass and damping of the elastic structure. Accordingly, a two-dimensional fluid–structure interaction (FSI) code is developed and validated with two different experiments available in the literature. The results of the numerical method are in good agreement with the experiments. In addition, a novel laboratory experiment on a dam break problem with elastic gate in which the length of the initial water column is larger than its height is conducted. The main difference between the previous experiments and the one conducted in this study is that an upward water motion parallel to the elastic gate is observed at the upstream side of the gate. This motion is captured with the numerical method.

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