Torricelli's Law

Written by Jerry Ratzlaff on . Posted in Fluid Dynamics

torricellis law 1Torricelli's law, also called Torricelli's principle or Torricelli's theorem, is the fluid efflux velocity flowing through an orifice under gravity at the bottom of a tank filled to a depth.  This is the same velocity from the orifice as a falling body over the same height due to gravity.

 

Torricelli's law formula

\(\large{ v = \sqrt{ 2 \; g \; h  }  }\)   

Where:

 Units English Metric
\(\large{ v }\) = velocity \(\large{\frac{ft}{sec}}\) \(\large{\frac{m}{s}}\)
\(\large{ h }\)  (Greek symbol rho) = height \(\large{ft}\) \(\large{m}\)
\(\large{ g }\) = gravitational acceleration \(\large{\frac{ft}{sec^2}}\) \(\large{\frac{m}{s^2}}\)

 

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Tags: Hydraulic Equations Orifice and Nozzle Equations