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The vorticity confinement keeps the small turbulences alive. It's natural for grid fire/smoke fluid solvers to lose fine details both in the density and in the velocity of simulations. Vorticity Confinement is a method for bringing these small details back and making the fluid more turbulent. However, classic vorticity tends to overcompensate and tear the fluid up too much, breaking the large-scale rolling of smoke and fire. In such cases, Phoenix's Massive Vorticity comes in hand handy - it does not allow the fluid to go wild and completely lose its shape and works well for both quick and slow moving fluids.

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