5.2. Fluid experiencing change in elevation

Try these first

1. 1.

   What is the formula for Bernoulli's equation?

   Hint

   It involves pressure, elevation, and velocity.

2. 2.

   Define Hydraulic Grade Line.

   Hint

   Consider what pressures contribute to the energy of a fluid.

3. 3.

   What does Bernoulli's Equation relate?

   • Pressure
   • elevation
   • and temperature
   • Pressure
   • elevation
   • and velocity
   • Velocity
   • temperature
   • and density

   Hint

   Think about the variables involved in fluid dynamics.

4. 4.

   True or False: The Hydraulic Grade Line is synonymous with the total energy of a fluid.

   • True
   • False

   Hint

   What contributions does the EGL have that the HGL does not?

5. 5.

   You have a water jet with an initial diameter of 0.2m and a velocity of 5m/s. If it narrows to 0.1m, what is the new velocity?

   Hint

   Remember the continuity equation: flow rates must be equal.

6. 6.

   A water pipe has an initial height of 10m and at the outlet, the height is 5m. What is the velocity at the outlet if the speed is zero at the top?

   Hint

   What happens to potential energy when elevation decreases?