Boundary Handling at Cloth–Fluid Contact

Huber, M.; Eberhardt, Bernhard; Weiskopf, Daniel

doi:10.1111/cgf.12455

Cited by 20 publications

(12 citation statements)

References 45 publications

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“…First, we define a novel saturation field constraint for each cloth particle i based on Fick's law and then discretize it using the SPH method, as follows:

\begin{matrix} alignleft \\ align-1 C_{i} (S) & align-2 = κ^{d} f (θ) \nabla^{2} S_{i} \\ align-1 & align-2 = \sum_{j} \frac{κ_{i}^{d} + κ_{j}^{d}}{2} \frac{S_{j} - S_{i}}{ρ_{0}} (1.0 + η^{d} \cos θ_{i j}) \nabla^{2} W_{i j}, \end{matrix}

where S is the vector of saturation values of all particles belonging to a piece of cloth, j is the index of neighboring cloth particles of i , and κ d defines the saturation diffusion rate of the cloth material. Because the cloth material is anisotropic, the value of κ d for each cloth particle is different.…”

Section: Nonlinear Cloth Wetting Modelmentioning

confidence: 99%

“…Afterward, their work was extended to simulate porous flow through granular materials and to model the behavior of the resulting mixture in a unified SPH framework. 27 As for the cloth wetting simulation discussed in this paper, Huber et al 4,28 implemented the simulation of the saturation process by using Fick's law to compute the diffusion, and a 2D cellular automaton is applied to update the diffusion state and to simulate the process of diffusion. Chen et al 3 presented a technique that simulates wet garments for virtual humans with realistic folds and wrinkles.…”

Section: Wetting Simulationmentioning

confidence: 99%

“…In order to obtain stable and realistic results under larger time steps, we propose to smooth the saturation field by using PBD to solve a new nonlinear saturation constraint of cloth particles, which calculates the diffusion rate by considering not only the saturation difference but also the gravity influence. First, we define a novel saturation field constraint for each cloth particle i based on Fick's law 28 and then discretize it using the SPH method, 9 as follows:…”

Section: Water Diffusionmentioning

confidence: 99%

See 2 more Smart Citations

Position‐based simulation of cloth wetting phenomena

Shao

Wang

2017

Computer Animation & Virtual

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Because of the advantages of high stability and efficiency, position‐based dynamics (PBD) is becoming increasingly popular with game developers and filmmakers. On the basis of the unified adaptive PBD, we present a nonlinear cloth wetting model to simulate visually realistic cloth wetting phenomena, which takes into account the influence of gravity on all aspects of the wetting process. Specifically, in order to model water diffusion in unsaturated cloth, we propose a novel nonlinear saturation constraint of cloth particles, which considers the influence of gravity, and then solve it using PBD to stably smooth the saturation field. The dynamic behaviors of the cloth and the water–cloth coupling during the cloth wetting process are modeled by using PBD. Moreover, a water absorption model and a water emission model are proposed to simulate the unsaturated cloth absorbing water and the oversaturated cloth draining water under the influence of gravity, respectively. The experimental results demonstrate that our novel wetting model provides an efficient way to model more stable and realistic cloth wetting phenomena using PBD.

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“…First, we define a novel saturation field constraint for each cloth particle i based on Fick's law and then discretize it using the SPH method, as follows:

\begin{matrix} alignleft \\ align-1 C_{i} (S) & align-2 = κ^{d} f (θ) \nabla^{2} S_{i} \\ align-1 & align-2 = \sum_{j} \frac{κ_{i}^{d} + κ_{j}^{d}}{2} \frac{S_{j} - S_{i}}{ρ_{0}} (1.0 + η^{d} \cos θ_{i j}) \nabla^{2} W_{i j}, \end{matrix}

Section: Nonlinear Cloth Wetting Modelmentioning

confidence: 99%

Section: Wetting Simulationmentioning

confidence: 99%

Section: Water Diffusionmentioning

confidence: 99%

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Position‐based simulation of cloth wetting phenomena

Shao

Wang

2017

Computer Animation & Virtual

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“…An impulse-based force is also used to achieve two-way coupling between SPH fluid and rigid bodies [CBP05,OKR09,HEW15]. An impulse-based force is also used to achieve two-way coupling between SPH fluid and rigid bodies [CBP05,OKR09,HEW15].…”

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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“…However, only a few research studies have been conducted for the dynamics of liquid transportation between porous materials with wetting effects. [Huber, et al 2014] presented a two-way coupling method between fluid and infinitesimally thin cloth. However, their approach cannot handle porous solids or oversaturated piece.…”

Section: Introductionmentioning

confidence: 99%