Double bubbles sans toil and trouble

Da, Fang; Batty, Christopher; Wojtan, Chris; Grinspun, Eitan

doi:10.1145/2767003

Cited by 45 publications

(3 citation statements)

References 58 publications

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“…Some mathematicians even went so far as to use them as analog computers to solve mathematical minimization problems [58]. Within the computer graphics community, the geometric properties of minimal surfaces as well as the formation, evolution and destruction of films, bubbles and foams have inspired a large number of groundbreaking works [122,43,61,60,148,68,23].…”

Section: Related Workmentioning

confidence: 99%

Chemomechanical simulation of soap film flow on spherical bubbles

et al. 2020

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Soap bubbles are widely appreciated for their fragile nature and their colorful appearance. The natural sciences and, in extension, computer graphics, have comprehensively studied the mechanical behavior of films and foams, as well as the optical properties of thin liquid layers. In this paper, we focus on the dynamics of material flow within the soap film, which results in fascinating, extremely detailed patterns. This flow is characterized by a complex coupling between surfactant concentration and Marangoni surface tension. We propose a novel chemomechanical simulation framework rooted in lubrication theory, which makes use of a custom semi-Lagrangian advection solver to enable the simulation of soap film dynamics on spherical bubbles both in free flow as well as under body forces such as gravity or external air flow. By comparing our simulated outcomes to videos of real-world soap bubbles recorded in a studio environment, we show that our framework, for the first time, closely recreates a wide range of dynamic effects that are also observed in experiment.

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Section: Related Workmentioning

confidence: 99%

Chemomechanical simulation of soap film flow on spherical bubbles

et al. 2020

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“…Wang et al [2005] explored the simulation of contact angles on the solidliquid interface by the use of a virtual level set which penetrates the solid surface. Methods for froth [Cleary et al 2007;Kim et al 2010], foam [Kim et al 2007], and bubbles [Da et al 2015] also make use of surface tension forces to increase simulation fidelity. More recently, [Batty et al 2012] used a reduced order model to simulate the dynamics of thin sheets of viscous incompressible liquid with surface tension incorporated by nonlinear forces by minimizing the discrete surface areas.…”

Section: Related Workmentioning

confidence: 99%

An extended cut-cell method for sub-grid liquids tracking with surface tension

et al. 2020

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Simulating liquid phenomena utilizing Eulerian frameworks is challenging, since highly energetic flows often induce severe topological changes, creating thin and complex liquid surfaces. Thus, capturing structures that are small relative to the grid size become intractable, since continually increasing the resolution will scale sub-optimally due to the pressure projection step. Previous methods successfully relied on using higher resolution grids for tracking the liquid surface implicitly; however this technique comes with drawbacks. The mismatch of pressure samples and surface degrees of freedom will cause artifacts such as hanging blobs and permanent kinks at the liquid-air interface. In this paper, we propose an extended cut-cell method for handling liquid structures that are smaller than a grid cell. At the core of our method is a novel iso-surface Poisson Solver, which converges with second-order accuracy for pressure values while maintaining attractive discretization properties such as symmetric positive definiteness. Additionally, we extend the iso-surface assumption to be also compatible with surface tension forces. Our results show that the proposed method provides a novel framework for handling arbitrarily small splashes that can also correctly interact with objects embodied by complex geometries.

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“…In addition, many physical laws apply to a single soap bubble and determine its movement patterns. In computer graphics, soap bubbles were realistically simulated as clusters of many soap bubbles using vortex sheets [4]. As hardware capable of real-time rendering was developed, motion recognition was used to simulate the generation and bursting of soap bubbles [5].…”

Section: Introductionmentioning

confidence: 99%

Physically Based Soap Bubble Synthesis for VR

2021

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To experience a real soap bubble show, materials and tools are required, as are skilled performers who produce the show. However, in a virtual space where spatial and temporal constraints do not exist, bubble art can be performed without real materials and tools to give a sense of immersion. For this, the realistic expression of soap bubbles is an interesting topic for virtual reality (VR). However, the current performance of VR soap bubbles is not satisfying the high expectations of users. Therefore, in this study, we propose a physically based approach for reproducing the shape of the bubble by calculating the measured parameters required for bubble modeling and the physical motion of bubbles. In addition, we applied the change in the flow of the surface of the soap bubble measured in practice to the VR rendering. To improve users’ VR experience, we propose that they should experience a bubble show in a VR HMD (Head Mounted Display) environment.

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Double bubbles sans toil and trouble

Cited by 45 publications

References 58 publications

Chemomechanical simulation of soap film flow on spherical bubbles

Chemomechanical simulation of soap film flow on spherical bubbles

An extended cut-cell method for sub-grid liquids tracking with surface tension

Physically Based Soap Bubble Synthesis for VR

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