5.1.1. Lecture - 15

Try these first

1. 1.

   What is Bernoulli's equation?

   Hint

   It is based on the conservation of energy.

2. 2.

   What does a control volume represent?

   Hint

   Think of it as a box around fluid.

3. 3.

   What does Bernoulli's equation relate?

   • Pressure and Temperature
   • Pressure
   • Velocity
   • and Elevation
   • Gravity and Pressure

   Hint

   Think about energy conservation in fluids.

4. 4.

   True or False: In a control volume, mass flux in equals mass flux out.

   • True
   • False

   Hint

   Remember the continuity equation.

5. 5.

   Calculate the required force to hold a pipe at a 90-degree bend when the flow velocity is given.

   Hint

   Focus on the changes in momentum.

6. 6.

   A water fountain ejects water at 3 m/s. Calculate the height the water will reach assuming no air resistance and using Bernoulli’s equation.

   Hint

   Remember the conservation of energy between kinetic and potential forms.