What is it about?
Simulating complex fluid behaviors such as bubbling, glugging, wetting, and splashing emerging from air-water and water-solid interactions is computationally difficult: very few numerical methods can handle density ratios and Reynolds numbers required for the type of challenging real-life simulations that movie productions strive to create digitally. This paper offers a robust and massively-parallel approach to performing such multiphase flow simulations.
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Why is it important?
Numerical simulations of multiphase flows require small time steps and fine grids in order to capture the fine interactions between air and water, responsible for guggling, wetting, or splashing behaviors. As a consequence, offering both efficiency and realism is difficult in practice, preventing the simulation of large-scale scenes.
Perspectives
We hope that this type of kinetic approach to simulating water will gain traction and be further extended and improved: with current GPUs, this seems to be the only way to handle complex scenes in reasonable computational times. In particular, we hope that our approach will open the way to robust two-way coupling so that phenomena involving fast-moving objects and turbulent flows can be tackled soon.
Mathieu Desbrun
Inria/X
Read the Original
This page is a summary of: Efficient kinetic simulation of two-phase flows, ACM Transactions on Graphics, July 2022, ACM (Association for Computing Machinery),
DOI: 10.1145/3528223.3530132.
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