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Hydrodynamics velocity and speed

  1. May 2, 2012 #1
    For fluids in motion, how do I find speed using velocity and diameter or velocity and pressure? Like in a pipe or other cyllinder type thing
  2. jcsd
  3. May 2, 2012 #2
    The relationship between velocity of sound propagation in a liquid medium and the pressure applied on the medium is defined as:

    [itex]c = \frac{P}{v*\rho}[/itex]

    c is speed of sound
    P is pressure from sound source
    v is particle velocity (not the fluid in motion, as flowing through a pipe, but rather the speed that the particles move from pressure source).
    rho is the density of the fluid
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