Discontinuous fluids

Hong, Jeong-Mo; Kim, Chang-Hun

doi:10.1145/1186822.1073283

Cited by 67 publications

(62 citation statements)

References 29 publications

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“…We expect that our method will be effective for fluid simulation, in which there is an interaction between an object and the fluid, and that it could also be used for liquids or multiphase fluids. 23,24 We intend to explore synergy with the particle method to preserve properties such as vorticity and density. We plan to provide an animator for advanced effects with a GUI.…”

Section: Resultsmentioning

confidence: 99%

Animating smoke with dynamic balance

Hong¹,

Kim

2005

Computer Animation & Virtual

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We propose a numerical method for maintaining a dynamic rolling motion of animated gaseous phenomena, such as smoke, that avoids dissipation due to numerical error. We compensate for the errors induced by a semi-Lagrangian scheme using an error estimate for each time interval. We develop a new advection term and perform vortex advection based on a vorticity confinement force. Example simulations show that this method is able to keep smoke features alive, even near the center of a vortex.

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Section: Resultsmentioning

confidence: 99%

Animating smoke with dynamic balance

Hong¹,

Kim

2005

Computer Animation & Virtual

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“…On the other hand, the existing multiphase solvers often track a sharp interface between multiple fluid components, and apply a specific modeling of the forces at the interface in order to have multiphase phenomena, such as the surface tension effects, which are more complex [8], [23], [24], [26]. In comparison, our method applies universal forces to all fluid regions without tracking, allowing easy implementation.…”

Section: Discussionmentioning

confidence: 99%

“…Although free surface methods are able to produce fascinating liquid interface phenomena, some multiphase effects, such as the bubble dynamics and the surface tension flows, require further modeling. Hong and Kim [23] modeled the discontinuous interface boundary condition for pressure and velocity gradients. Akinci et al [9] proposed new force formulations to correctly address the surface tension and D2Q9 D3Q19 adhesion in SPH.…”

Section: Related Workmentioning

confidence: 99%

A Unified Detail-Preserving Liquid Simulation by Two-Phase Lattice Boltzmann Modeling

Guo

Liu

2017

IEEE Trans. Visual. Comput. Graphics

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Traditional methods in graphics to simulate liquid-air dynamics under different scenarios usually employ separate approaches with sophisticated interface tracking/reconstruction techniques. In this paper, we propose a novel unified approach which is easy and effective to produce a variety of liquid-air interface phenomena. These phenomena, such as complex surface splashes, bubble interactions, as well as surface tension effects, can co-exist in one single simulation, and are created within the same computational framework. Such a framework is unique in that it is free from any complicated interface tracking/reconstruction procedures. Our approach is developed from the two-phase lattice Boltzmann method with the mean field model, which provides a unified framework for interface dynamics but is numerically unstable under turbulent conditions. Considering the drawbacks of the existing approaches, we propose techniques to suppress oscillations for significant stability enhancement, as well as derive a new subgrid-scale model to further improve stability, faithfully preserving liquid-air interface details without excessive diffusion by taking into account the density variation. The whole framework is highly parallel, enabling very efficient implementation. Comparisons with the related approaches show superiority on stable simulations with detail preservation and multiphase phenomena simultaneously involved. A set of animation results demonstrate the effectiveness of our method.

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“…This framework, when combined with the level set method, can be used for simulating liquid (Foster and Fedkiw 2001;Enright et al 2002). Since then, this Eulerian framework has been employed to various fluid phenomena such as fluid-rigid interaction (Carlson et al 2004), fluid-deformable interaction (Guendelman et al 2005), viscoelastic fluids (Goktekin et al 2004), and multi-phase fluids (Hong and Kim 2005;Song et al 2005Song et al , 2007Losasso et al 2006).…”

Section: Previous Workmentioning

confidence: 99%

A new SPH fluid simulation method using ellipsoidal kernels

Kim

Song

2011

J Vis

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We propose a new smoothed particle hydrodynamics simulation method that utilizes ellipsoidal kernels instead of spherical kernels. In order to load fluid quantities between time-stepping into smoothed particles, kernel shapes are elongated according to the directions and magnitudes of velocities. The use of these deformable kernels allows us to efficiently simulate fast moving fluids without increasing computational cost. The experiments demonstrate that our method can reproduce the detailed movement of fast fluids by reducing numerical diffusion.

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Discontinuous fluids

Cited by 67 publications

References 29 publications

Animating smoke with dynamic balance

Animating smoke with dynamic balance

A Unified Detail-Preserving Liquid Simulation by Two-Phase Lattice Boltzmann Modeling

A new SPH fluid simulation method using ellipsoidal kernels

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