Efficient preservation and breakup of liquid sheets using screen-projected particles.

Jong-Hyun Kim,Jung Lee,Ajaya Bhattarai

doi:10.1371/journal.pone.0227590

Abstract

In this paper, we propose a technique that can efficiently express the preservation and breakup of liquid sheets by eliminating over-preserved liquid sheets using the motion of water particles projected onto the screen. First, we project three-dimensional water particles onto a two-dimensional screen. When multiple particles are projected onto the same pixel, we select one of the front most particles as a screened particle by comparing their depth values. Based on the anisotropic kernel and density, the motion of the screened water particles is tracked to determine whether preservation and breakup should be performed. As a result, new water particles are added or existing ones are deleted, which makes it possible to express two characteristics of particle-based fluids: preservation and breakup of liquid sheets. The proposed technique is based on particle-based fluids, which can be used to remove the over-preserved liquid sheets and thus improve the quality of liquid sheets without surface noise.

Highlights

Fluid simulations are used in various fields such as film, game, VFX and CFD
Ando saved liquid sheets by adding new fluid particles to the areas where the fluid surfaces disappeared and holes appeared [4, 5]. This approach shows a better fluid sheet than Naive FLIP simulation, adding new water particles to the hole area caused by surface loss leads to the problem of excessive liquid sheets
We proposed a framework for efficiently expressing the preservation and breakup of liquid sheets, one of the representative features of liquids

Summary

Introduction

Fluid simulations are used in various fields such as film, game, VFX (visual effects) and CFD (computational fluid dynamics). Liquid sheets in particle-based fluids have been proposed, but most of them have introduced an approach to filling holes on the fluid surface when water particles are not evenly distributed [4, 5]. This method analyzes the movement of adjacent particles to predict where the hole will occur and adds new water particles to this area, so the liquid sheets seem to be well preserved. Several studies have been proposed to solve this problem, most of which add new water particles to the holes that occur during the reconstruction of fluid surfaces [4, 5] These methods are intuitive, but since they can not express the breakup effects of liquid sheets, their results show noisy and viscous sheets. We propose a novel framework for expressing detailed liquid sheets by solving this problem

Related work

Results

Conclusions and future work