Coupling elastic solids with smoothed particle hydrodynamics fluids

Akinci, Nadir; Cornelis, Jens; Akinci, Gizem; Teschner, Matthias

doi:10.1002/cav.1499

Cited by 72 publications

(54 citation statements)

References 22 publications

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“…Smoothed particle hydrodynamics (SPH) methods provide an alternate way to simulate uids, by distributing mass to particles and using interactions between particles to determine the dynamics of the aggregate uid. Several algorithms to simulate two-way coupling of deformable solids to SPH uids have been previously proposed (e.g., [Akinci et al 2013;Solenthaler et al 2007]). These methods are outside the scope of the present work, which focuses on Eulerian uid representations.…”

Section: Related Workmentioning

confidence: 99%

A positive-definite cut-cell method for strong two-way coupling between fluids and deformable bodies

Zarifi

Batty

2017

Proceedings of the ACM SIGGRAPH / Eurographics Symposium on Computer Animation

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We present a new approach to simulation of two-way coupling between inviscid free surface uids and deformable bodies that exhibits several notable advantages over previous techniques. By fully incorporating the dynamics of the solid into pressure projection, we simultaneously handle uid incompressibility and solid elasticity and damping. Thanks to this strong coupling, our method does not su er from instability, even in very taxing scenarios. Furthermore, use of a cut-cell discretization methodology allows us to accurately apply proper free-slip boundary conditions at the exact solid-uid interface. Consequently, our method is capable of correctly simulating inviscid tangential ow, devoid of grid artefacts or arti cial sticking. Lastly, we present an e cient algebraic transformation to convert the inde nite coupled pressure projection system into a positive-de nite form. We demonstrate the e cacy of our proposed method by simulating several interesting scenarios, including a light bath toy colliding with a collapsing column of water, liquid being dropped onto a deformable platform, and a partially liquid-lled deformable elastic sphere bouncing.

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Section: Related Workmentioning

confidence: 99%

A positive-definite cut-cell method for strong two-way coupling between fluids and deformable bodies

Zarifi

Batty

2017

Proceedings of the ACM SIGGRAPH / Eurographics Symposium on Computer Animation

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“…A solid object composed of 1138 triangles, sampled with particles: (a) Becker et al , (b) Fedkiw , and (c) Akinci et al .…”

Section: Related Workmentioning

confidence: 99%

Incorporating particle motion into an ADF for fast coupling of fluids with rigid and deformable solids

Kim

Lee

2016

Computer Animation & Virtual

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We present a new method for the fast simulation of interactions between fluids and solids by incorporating particle-based water flow into an adaptive signed distance field. In some previous methods, the motion of every water particle is checked when simulating the collision with the solid in the coupling process, and the computational cost becomes very great as the number of particles increases. If only the particles on the leaf nodes surrounding the solid are considered, this reduces the computational cost of collision detection, but some collisions may not be detected. This may lead to the "tunneling" artifact, in which particles with high velocities skip across the layer of leaf nodes. This paper addresses the problem by (i) considering particles only on the leaf nodes in the adaptive structure to improve the processing time required for the water-solid coupling and (ii) considering the water flow to avoid the tunneling artifact by incorporating particle motion into the tree structure of the adaptive signed distance field. Our method can be computed in parallel, and experimental results show that it outperforms previous methods while producing animations that are largely free of artifacts. Copyright

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“…Boundary particles are commonly used to produce a more smooth density distribution on the boundary [BYM05, BIT09,BTT09]. They extended their work to realize two-way coupling with thin, deformable objects [ACAT13]. Ihmsen et al [IABT11] corrected the distribution of particles on the boundary by using the pressure force.…”

Section: Related Workmentioning

confidence: 99%

An Efficient Boundary Handling with a Modified Density Calculation for SPH

Fujisawa

Miura

2015

Computer Graphics Forum

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We propose a new boundary handling method for smoothed particle hydrodynamics (SPH). Previous approaches required the use of boundary particles to prevent particles from sticking to the boundary. We address this issue by correcting the fundamental equations of SPH with the integration of a kernel function. Our approach is able to directly handle triangle mesh boundaries without the need for boundary particles. We also show how our approach can be integrated into a position-based fluid framework.

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Coupling elastic solids with smoothed particle hydrodynamics fluids

Cited by 72 publications

References 22 publications

A positive-definite cut-cell method for strong two-way coupling between fluids and deformable bodies

A positive-definite cut-cell method for strong two-way coupling between fluids and deformable bodies

Incorporating particle motion into an ADF for fast coupling of fluids with rigid and deformable solids

An Efficient Boundary Handling with a Modified Density Calculation for SPH

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