Leray-Helmholtz projection (source code)

= Leray-Helmholtz projection
{c}
{title2=$P_\sigma$}

The <Leray-Helmholtz projection> $P_\sigma$ is the orthogonal projection of square-integrable vector fields onto <divergence-free vector fields>. Applying it to an incompressible <momentum> equation removes the <pressure gradient>.