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What is the S-coefficient in Magnus Effect?

  1. Nov 4, 2013 #1
    I am studying Magnus Effect for the first time, I would like some help here, please.

    The formula for Magnus effect as shown was:

    [F][/m] = S (v × ω)

    Where v = velocity of fluid,
    ω = angular velocity,
    S = air resistance coefficient across the surface of sphere.

    How can I find the value of S? Is it fixed or does it need another formula?

    Thank you for your help in advance. :)
  2. jcsd
  3. Nov 4, 2013 #2

    Simon Bridge

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    Science Advisor
    Homework Helper

    You pretty much have to measure it.
    It depends on things like the temperature, pressure, viscosity and constituents of the fluid and the roughness of the surface.

    Within narrow sub-fields there will be tables of values.
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