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SPH fluid control with self‐adaptive turbulent details
Author(s) -
Zhang Xiaoyong,
Liu Shiguang
Publication year - 2015
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.1637
Subject(s) - computer science , turbulence , curvature , smoothed particle hydrodynamics , viscosity , animation , fluid dynamics , computational fluid dynamics , computer animation , mechanics , physics , computer graphics (images) , mathematics , geometry , quantum mechanics
Smoothed particle hydrodynamics (SPH)‐based fluid control is often involved in fluid animation. Because most of the existing SPH fluid control methods employ the strategy of control force to control fluid particles, the artificial viscosity introduced by control force would lead to the loss of fine‐scale details. Although the introduction of the low‐pass filter can add details, it may easily destroy the target shape. To remedy the previous problems, we sample the control particles with curvature information to represent the shape complexity. Because of the shape's complexity, we suppress the generation of turbulence in the high‐curvature areas and promote turbulence in the low‐curvature regions. Our self‐adaptive way to randomly generate turbulence can effectively prevent the lack of fluid dynamics caused by the artificial viscosity. Our new method can improve the visual quality of the fluid animation, and the shape control result is consistent to the target shape. Copyright © 2015 John Wiley & Sons, Ltd.