Fluid dynamics in three dimensions. A dye plume rises and rolls through a fully 3D incompressible flow — scrub through z-slices to see inside the volume.
3D CFD StudioLive
3D Stable Fluids · Navier–Stokes
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A dye plume rises through a full 3D incompressible flow. Scrub the z-slice to inspect the volume.
Reading this result: At moderate force (30) the incompressible constraint is visible: each step the projection removes divergence, so fluid pushed up the center must fold back down along the sides.
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How it works
This extends Jos Stam's Stable Fluids method to a full 3D grid: three velocity components and dye density are diffused, advected with a 3D semi-Lagrangian scheme, and made incompressible by a Jacobi pressure-projection step that enforces a divergence-free field. It's genuine 3D Navier–Stokes, running on your device — the kind of volumetric CFD that normally needs a workstation.
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