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Symmetry 2018, 10(4), 86; https://doi.org/10.3390/sym10040086

A Symmetric Particle-Based Simulation Scheme towards Large Scale Diffuse Fluids

1,2
,
1,2,* , 1,2
and
1,2
1
School of Computer and Communication Engineering, University of Science and Technology Beijing, Xueyuan Road 30, Haidian District, Beijing 100083, China
2
Beijing Key Laboratory of Knowledge Engineering for Materials Science, Beijing 100083, China
*
Author to whom correspondence should be addressed.
Received: 28 February 2018 / Revised: 25 March 2018 / Accepted: 27 March 2018 / Published: 29 March 2018
(This article belongs to the Special Issue Symmetry in Cooperative Applications III)
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Abstract

We present a symmetric particle simulation scheme for diffuse fluids based on the Lagrangian Smoothed Particle Hydrodynamics (SPH) model. In our method, the generation of diffuse particles is determined by the entropy of fluid particles, and it is calculated by the velocity difference and kinetic energy. Diffuse particles are generated near the qualified diffuse particle emitters whose diffuse material generation rate is greater than zero. Our method fits the laws of physics better, as it abandons the common practice of adding diffuse materials at the crest empirically. The coupling between diffuse materials and fluid is a post-processing step achieved by the velocity field, which enables the avoiding of the time-consuming process of cross finding neighbors. The influence weights of the fluid particles are assigned based on the degree of coupling. Therefore, it improved the accuracy of the diffuse particle position and made the simulation results more realistic. The approach is appropriate for large scale diffuse fluid, as it can be easily integrated in existing SPH simulation methods and the computational overhead is negligible. View Full-Text
Keywords: symmetry; Smoothed Particle Hydrodynamics (SPH); diffuse fluids; physically-based simulation; cooperation visualization symmetry; Smoothed Particle Hydrodynamics (SPH); diffuse fluids; physically-based simulation; cooperation visualization
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Liu, S.; Ban, X.; Wang, B.; Wang, X. A Symmetric Particle-Based Simulation Scheme towards Large Scale Diffuse Fluids. Symmetry 2018, 10, 86.

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