Incompressible Navier–Stokes

The maths of moving fluid, made visible

Pick a lesson to see one idea behave cleanly, or open the Sandbox for full control. Drag on the canvas to push the fluid yourself.

Momentum · conservation of mass

\frac{\partial u}{\partial t} = - (u \cdot \nabla) u - \frac{1}{ρ} \nabla p + ν \nabla^{2} u + f

\nabla \cdot u = 0

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