Premium
Animating turbulent fluid with a robust and efficient high‐order advection method
Author(s) -
Zhu Jian,
Li Silong,
Cai Ruichu,
Hao Zhifeng,
Huang Guoheng,
Sheng Bin,
Wu Enhua
Publication year - 2020
Publication title -
computer animation and virtual worlds
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.225
H-Index - 49
eISSN - 1546-427X
pISSN - 1546-4261
DOI - 10.1002/cav.1951
Subject(s) - advection , stencil , computer science , computation , interpolation (computer graphics) , computational science , turbulence , stability (learning theory) , grid , scheme (mathematics) , order of accuracy , mathematics , algorithm , numerical analysis , numerical stability , mechanics , artificial intelligence , geometry , mathematical analysis , physics , image (mathematics) , machine learning , thermodynamics
The accuracy of advection has a great influence on the visual effect of fluid simulation. Constrained interpolation profile (CIP) method has been an important advection scheme because of its third‐order accuracy and the fact that it only needs to be performed over a compact stencil, but extending it to high‐dimensional advection equations is not easy, because it involves complex calculations and large memory overheads, and is usually unstable. In this article, we propose a stable and efficient three‐dimensional (3D) CIP scheme which can maintain high accuracy but requires low computation and memory cost. We first construct an efficient two‐dimensional (2D) CIP scheme based on dimensional splitting and local Taylor expansions, and then propose an effective way to extend it for 3D applications without decreasing the computational accuracy or affecting the stability. The experimental results show the advantages of our method over the state‐of‐the‐art advection schemes.