Triangular-profile line plume
= Triangular-profile line plume
{title2=$f(\xi)=(1-|\xi|)_+$}
A two-sided <line plume> whose axial <velocity> and density anomaly both have triangular transverse profiles. For half-width $b$, $\int_{-b}^bf(x/b)^n\,dx=2b/(n+1)$. These profile moments set the different coefficients of stored <mass>, <momentum>, and their fluxes. It differs from a wall plume because both edges entrain ambient fluid.