Fluid Simulation Using Implicit Particles

References

• Fluid Simulation Using Implicit Particles
• Fluid Flow for the Rest of Us: Tutorial of the Marker and Cell Method in Computer Graphics

Main Files

• Main.cpp
• MacGrid.cpp
• Reconstruction.cpp

Overview

• Initial fluid/solid positions are defined based on input trimeshes
• Within the simulation loop:
  • A buffer zone is created surrounding the fluid
  • Velocity field updated based on particle velocities
  • Velocity field updated based on external forces (gravity)
  • Velocity field into and out of solids is set to 0
  • Divergence is removed from the velocity field
  • Particle positions are updated based on velocity field
  • Particle positions are output at regular intervals
• Within the reconstruction pipeline:
  • Particle positions are converted to signed distance fields
  • Marching cubes is used to produce a trimesh
  • The trimeshes are renedered in Blender

Extensions

• Adding additional fluid to simulation by adding fluid source or turning solids into fluids
• Adding foam particles to simulation when cell curl above given value