2.3. Small Amplitude Waves and Their Assumptions

Try these first

1. 1.

   What is open channel flow?

   Hint

   Think about channels that aren't completely filled with water.

2. 2.

   Define free surface.

   Hint

   Consider what you see when looking at a body of water.

3. 3.

   What defines open channel flow?

   • It's completely filled
   • It's partially filled with a free surface
   • It's always turbulent

   Hint

   Think about how it differs from piping systems.

4. 4.

   Is the wave speed in open channel flow dependent on the water depth?

   • True
   • False

   Hint

   Reflect on earlier discussions about wave principles.

5. 5.

   Given a water depth of 2 meters and a wave height of 0.1 meters, calculate the wave speed if the wall is moving at 0.5 m/s.

   Hint

   Substitute the values carefully into the formula.

6. 6.

   Discuss the implications of observing wave speed from different reference frames: a stationary observer versus one moving with the wave.

   Hint

   Consider how perspective changes the experience of fluid motion.