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Extended Narrow Band Weighted MultiFLIP for Two-Phase Liquid Simulation
Lyu, L.; Cao, W.; Yang, Z. X.; Wu, E. H.
2019-11-01
Conference NameExtended Narrow Band Weighted MultiFLIP for Two-Phase Liquid Simulation
Source PublicationProceedings ofVRCAI '19: The 17th International Conference on Virtual-Reality Continuum and its Applications in Industry
Conference Date2019-11-01
Conference PlaceN/A
Abstract

Physically-based fluid simulation has been studied for many years in computer graphics. MultiFLIP is a powerful method to simulate two-phase liquid phenomena such as bubbles and the “glugging” effect of water pouring, which cannot be produced by the traditional Fluid Implicit Particle (FLIP) method. In contrast to FLIP where only the liquid phase is involved, MultiFLIP samples two respective grid velocities for both gas and liquid volumes. However, MultiFLIP produces some abnormal phenomena such as small liquid droplets getting carried around by gas. The abnormality is in fact produced by the reason that MultiFLIP uses the same weights for both gas and liquid when blending the velocities near the interface for divergence-free projection. To address this problem, we present a novel velocity coupling method, which uses different mass for gas and liquid particles when interpolating velocities of particles into the Eulerian grid. Besides, we apply a transition function to MultiFLIP method so that the two-phase liquid simulation can switch between a particle-based simulation and a grid-based simulation, which aims to reduce the number of particles and smooth the liquidgas interface in the calm areas. Experiments show that our techniques can conserve the kinetic energy and tiny details of gas-liquid interface better, as well as reduce the number of gas and liquid particles.

KeywordMultiflip Extended Narrow Band Weighted Multiflip Two-phase Fluid Simulation Extended Narrow Band Flip
URLView the original
Language英語English
The Source to ArticlePB_Publication
Document TypeConference paper
CollectionDEPARTMENT OF ELECTROMECHANICAL ENGINEERING
Faculty of Science and Technology
Corresponding AuthorWu, E. H.
Recommended Citation
GB/T 7714
Lyu, L.,Cao, W.,Yang, Z. X.,et al. Extended Narrow Band Weighted MultiFLIP for Two-Phase Liquid Simulation[C],2019.
APA Lyu, L.,Cao, W.,Yang, Z. X.,&Wu, E. H..(2019).Extended Narrow Band Weighted MultiFLIP for Two-Phase Liquid Simulation.Proceedings ofVRCAI '19: The 17th International Conference on Virtual-Reality Continuum and its Applications in Industry.
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