Calculate fluid velocity from the pressure difference across a Pitot-Static or Prandtl tube using the Bernoulli equation.
Prandtl tubes or Pitot-Static tubes are used to measure the fluid static pressure, and the fluid stagnation pressure (the sum of the static pressure and the dynamic pressure). The fluid velocity can be calculated from the dynamic pressure. The dynamic pressure is equal to the stagnation pressure minus the static pressure.
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