Fuck Yeah Fluid Dynamics

Celebrating the physics of all that flows. Ask a question, submit a post idea or send an email. You can also follow FYFD on Twitter and Google+. FYFD is written by Nicole Sharp, PhD.

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The bumps—or tubercles—on the edge of a humpback whale's fins have important hydrodynamic effects on its swimming. Here dye is used to visualize flow over a hydrofoil with tubercle-like protuberances—a sort of artificial whale fin. Dye released from the peaks and troughs of the protuberances flows straight back in a narrow line before breakdown to turbulence. But the dye released from ports on the shoulders of the protuberances twists and spirals into vortices. At angle of attack, these vortices are stronger. They may help keep flow from separating on the upper side of a whale’s fin. (Photo credits: SIDwilliams, H. Johari)

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    The bumps—or tubercles—on the edge of a humpback whale’s fins have important hydrodynamic effects on its swimming. Here...
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    read The Waves and tell me she didn’t already have this image in her mind…
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    cool whale info
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    My final year project was based...this theory! http://goo.gl/g0Lrq
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