4. Flow Dynamics and Equations

Try these first

1. 1.

   What does Bernoulli's equation relate?

   Hint

   Think about energy conservation in fluids.

2. 2.

   Define specific energy.

   Hint

   It's related to potential and kinetic energy.

3. 3.

   What does Bernoulli's equation express?

   • Conservation of mass
   • Conservation of energy
   • Conservation of momentum

   Hint

   Think about what happens to energy in flowing fluids.

4. 4.

   True or False: Specific energy decreases as flow speed increases.

   • True
   • False

   Hint

   Consider the relationship between energy, height, and speed.

5. 5.

   Design a rectangular channel capable of maintaining specified flow conditions. Calculate the necessary width and slope to achieve uniform flow given a flow rate of 10 cubic meters per second.

   Hint

   Apply the relationship between flow rate, depth, and channel dimensions.

6. 6.

   Given a specific energy diagram that shows the transition from subcritical to supercritical flow, predict what elevation changes are necessary for the transition to occur within a channel.

   Hint

   Use the energy loss concepts to understand the necessary adjustments.