Single-Phase Trapped Air Simulation in Water Flow
Files
Date issued
2014
Authors
Oh, Seungtaik
Jeong, Il Kwon
Journal Title
Journal ISSN
Volume Title
Publisher
Václav Skala - UNION Agency
Abstract
We introduce a novel practical single-phase particle simulation for trapped air bubbles in a turbulent water flow.
Our model for a trapped air bubble is a low-density rigid body with a spherical shape, and our bubble interacts with
water and other rigid bodies in a fully two-way manner. Our bubble is created at a trapped air pocket computed
from the water volume. Stable and realistic bubble interactions are achieved using an impulse-based boundary
force with non-positive coefficients of restitution. Subgrid-scale bubbles are also created to add more details using
precomputed bubble data and an oscillating bubble mesh is used in rendering stage instead of a spherical shape
for a soft look of the bubble surface. Our method can be easily implemented by extending an existing rigid body
interaction of fluid solver, and it is fast compared to two-phase simulation because we do not simulate the air part.
Description
Subject(s)
počítačová grafika, vodní tok, vzduchové bubliny, jednofázová částicová simulace
Citation
WSCG 2014: Full Papers Proceedings: 22nd International Conference in Central Europe on Computer Graphics, Visualization and Computer Vision in co-operation with EUROGRAPHICS Association, p. 87-94.