Example, Mass Conservation/Bernoulli Equation

1
Example, Mass Conservation/Bernoulli Equation
Water is draining out of a large tank
(cross-sectional area of A1) through a small hole
A2 as shown. Determine the water height as a
function of time, H(t), assuming no frictional
losses.
Apply Bernoullis equation from the tank free
surface To the drain opening.
H(t)
2

• Assume the area of the tank is very large as
  compared to the area of the draining hole, that
  is, A1gtgtA2