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FLIP-Fluid for Unity

Real-time particle-based 3D fluid simulation and rendering in Unity HDRP with GPU (Compute Shader) & VFXGraph.

FLIP (Fluid Implicit Particle) Fluid Simulation

Cataclysm: a FLIP Solver with GPU Particles

• PIC / FLIP Combination (Flipness)
• Staggered MAC Grid
• Particle <-> Grid Transferring
  • Linear Kernel
  • Quadratic Kernel
• Mouse Interaction
• Viscous Diffusion
• Pressure Projection
• Particle Advection
  • Forward Euler
  • 2nd order Runge-Kutta
  • 3rd order Runge-Kutta
• Density Projection for Volume Conserving
• Interactive Camera
• Runtime UI <img src="https://user-images.githubusercontent.com/55338725/226634933-0736adc3-1383-4427-80ad-6d884fa1d882.png" width="320px">

Movie

References

• Fluid Simulation for Computer Graphics, Second Edition
• Implicit Density Projection for Volume Conserving Liquids
• fluid
• List of Runge-Kutta methods