Ladder

Vortex shedding — the ladder

One essay so far against this idea. A ladder is the distinct arguments that stand against one idea, and this one has room to grow.
  1. 024681012141618200123shedding frequency (Hz)1.2 m across · St 0.18 · 0.9 Hzlock-in6 m/s02468101214161820050100150200wind speed (m/s)cross-wind amplitude (mm)0.40% damping — Sc = 11.2, peak 180.94 mm

    The wind that brings its own frequency

    Every other load in this subject arrives at whatever rate it happens to arrive at. Vortex shedding arrives at a rate set by the wind speed — so for any chimney, mast or cable there is always a wind speed at which the shedding matches the structure exactly, and it is a breeze rather than a storm.

    rung 1 · dynamics

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