Power of a Brinkman sheet
= Power of a Brinkman sheet
{title2=$P_+=\tfrac12\mu b^2k\omega^2s(s+1)$}
For $s=\sqrt{1+(\alpha/k)^2}$, the leading work per projected area on one side of a transverse <Brinkman swimming sheet> is $\mu b^2k\omega^2s(s+1)/2$. Two fluid sides double it. Work includes <viscous dissipation> and drag against the matrix, giving a greater fixed-stroke cost than in the unscreened fluid.