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- Title
An Efficient Hybrid Incompressible SPH Solver with Interface Handling for Boundary Conditions.
- Authors
Takahashi, Tetsuya; Dobashi, Yoshinori; Nishita, Tomoyuki; Lin, Ming C.
- Abstract
Abstract: We propose a hybrid smoothed particle hydrodynamics solver for efficientlysimulating incompressible fluids using an interface handling method for boundary conditions in the pressure Poisson equation. We blend particle density computed with one smooth and one spiky kernel to improve the robustness against both fluid–fluid and fluid–solid collisions. To further improve the robustness and efficiency, we present a new interface handling method consisting of two components: free surface handling for Dirichlet boundary conditions and solid boundary handling for Neumann boundary conditions. Our free surface handling appropriately determines particles for Dirichlet boundary conditions using Jacobi‐based pressure prediction while our solid boundary handling introduces a new term to ensure the solvability of the linear system. We demonstrate that our method outperforms the state‐of‐the‐art particle‐based fluid solvers.
- Subjects
BOUNDARY value problems; INCOMPRESSIBLE flow; HYDRODYNAMICS; POISSON processes; DIRICHLET series
- Publication
Computer Graphics Forum, 2018, Vol 37, Issue 1, p313
- ISSN
0167-7055
- Publication type
Article
- DOI
10.1111/cgf.13292