InteractiveComputerGraphics/SPlisHSPlasH

Health v2 · maintenance only

Adoption not part of the score

1882 stars · 337 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

SPlisHSPlasH is an open-source C++ library for physically-based fluid simulation using the Smoothed Particle Hydrodynamics (SPH) method. It implements state-of-the-art pressure solvers (WCSPH, PCISPH, PBF, IISPH, DFSPH, PF) plus viscosity, surface tension, vorticity, drag, multiphase, and rigid/deformable solid coupling, with partio/VTK export and Python bindings.

Use cases

• simulate incompressible fluids with SPH for research or graphics
• compare different SPH pressure solvers like DFSPH or IISPH
• simulate viscous fluids, surface tension, and vorticity effects
• couple fluids with rigid or deformable solids
• run multiphase fluid simulations
• export particle data to partio or VTK for import into Maya, Blender, or ParaView
• script fluid scenes in Python or via JSON scene files
• generate spray, foam, and bubble particles as postprocessing

When to choose

• you need a physically-based, meshless Lagrangian fluid simulator with multiple state-of-the-art pressure solvers
• you are doing SPH research and want a well-maintained, documented C++ library with Python bindings
• you need rigid-fluid or fluid-deformable-solid coupling
• you want to export particle data to DCC tools like Maya, Blender, or ParaView

When to avoid

• you need grid-based (Eulerian) fluid simulation rather than particle methods
• you need real-time fluid effects in a game engine rather than offline physically-based simulation
• you need a turnkey GUI application for artists without scene setup
• your project cannot use C++ or the included dependency stack

Facets

library · maturity active

simulation graphics simulation graphics computer-vision windows cpp python sph fluid-simulation particle-simulation incompressible-fluids rigid-fluid-coupling multiphase-flow surface-tension vorticity deformable-solids partio-export vtk-export python-bindings gpu-neighborhood-search physics linux macos

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