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For advection, we exploit polyhedral interpolation to improve the degree to which the flow conforms to irregular and possibly non-convex cell boundaries, and propose a modified PIC/FLIP advection scheme ... Rotating Paddle: 23 × 10 × 6 grid Hollow Dragon: 11 × 9 × 6 grid Linked Tori: 7 × 7 × 7 grid Figure 1 : Our geometry-and topology-aware boundary treatment supports simulating smooth flows in the presence ... We observe that with an appropriate PIC/FLIP implementation, this issue does not arise. ...doi:10.1145/2897824.2925919 fatcat:xsscfvzoijaoznirkocsgt5agq
The comprehensive visual modeling of fluid motion has historically been a challenging task, due in no small part to the difficulties inherent in geometries that are non-manifold, open, or thin. ... Our key technical contribution is the generalization of the Particle-In-Cell fluid simulation methodology to arbitrary polyhedra using VEM. ... While we observed variations in the rate of CG convergence for complex cut-cells, in practice we found our method to be stable for CFL numbers around 1, in line with comparable PIC/FLIP solvers. ...doi:10.1145/3528223.3530138 fatcat:eiscrzsosrbk7ft6wehugwh2hi