What is the Froude number?

The Froude number is a dimensionless number and determines the weightlessness of the product during the mixing cycle. If the number is greater than 1, this means that the product will float during the “throw-in phase” in a paddle mixer.

$Fr\ =\frac{\left(R⋅ω²\right)}{g}$
  • Fr        = Froude number
  • R         = The radius in meters with which the product moves upwards. Tip of the blade
  • ω         = The angular velocity. A paddle spins a circle
  • g          = The gravitational acceleration, so gravitational acceleration, 9.81
$ω\ =\frac{2\ *\ π}{T}$
  • ω         = Angular displacement in radians per second. The paddle spins in a circle
  • T         = Time in seconds, of 1 revolution

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