Talk:Strouhal number

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Is the frequency term in the Strouhal Number in "radians/second", or "cycles/second" (assuming V = m/sec and D = m)?

Radians are a non-dimensional unit, such that cycles per second is the same thing as radians per second except that there are 2*pi (a dimensionless number) radians in each cycle. So, the frequency is in fact in cycles per second, or if multiplied by 2*pi, radians per second. --ABQCat 01:32, 4 Nov 2004 (UTC)

Frequency is actually blade frequency, so the cycles/second of the rotor is blade frequency/ # of blades.