Multiple-Fluid SPH Simulation Using a Mixture Model

• Published in: ACM transactions on graphics Vol. 33; no. 5; pp. 1 - 11
• Main Authors: Ren, Bo, Li, Chenfeng, Yan, Xiao, Lin, Ming C., Bonet, Javier, Hu, Shi-Min
• Format: Journal Article
• Language: English
• Published: 01.08.2014
• Subjects: Computer simulation; Diffusion; Fluid flow; Representations; State of the art; Transaction processing; Transformations; Volume fraction
• ISSN: 0730-0301; 1557-7368
• DOI: 10.1145/2645703

This article presents a versatile and robust SPH simulation approach for multiple-fluid flows. The spatial distribution of different phases or components is modeled using the volume fraction representation, the dynamics of multiple-fluid flows is captured by using an improved mixture model, and a stable and accurate SPH formulation is rigorously derived to resolve the complex transport and transformation processes encountered in multiple-fluid flows. The new approach can capture a wide range of real-world multiple-fluid phenomena, including mixing/unmixing of miscible and immiscible fluids, diffusion effect and chemical reaction, etc. Moreover, the new multiple-fluid SPH scheme can be readily integrated into existing state-of-the-art SPH simulators, and the multiple-fluid simulation is easy to set up. Various examples are presented to demonstrate the effectiveness of our approach.