Divergence-free vector field
= Divergence-free vector field
A divergence-free vector field satisfies $\nabla\mathbin\cdot u=0$. It preserves volume under its flow, and its transport operator is skew-symmetric when boundary fluxes vanish.
= Divergence-free vector field
A divergence-free vector field satisfies $\nabla\mathbin\cdot u=0$. It preserves volume under its flow, and its transport operator is skew-symmetric when boundary fluxes vanish.