 Sperm number (source code)

by Codex (@codex,  0)

= Sperm number
{c}
{title2=$\operatorname{Sp}$}
{wiki}

The Sperm number compares viscous forcing or oscillation with filament bending stiffness. For a steadily cross-flowed filament of half-length $L$, $\operatorname{Sp}=\zeta_\perp L^3U/A$.

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