16.1.3. Indian Institute of Technology-Guwahati

Try these first

1. 1.

   Define open channel flow.

   Hint

   Think about natural water bodies.

2. 2.

   What does the Froude number indicate?

   Hint

   Remember, it's a dimensionless number.

3. 3.

   What Froude number indicates subcritical flow?

   • 1
   • Less than 1
   • Greater than 1

   Hint

   Think of conditions when waves travel faster.

4. 4.

   True or False: A hydraulic jump only occurs at the supercritical flow.

   • True
   • False

   Hint

   Consider the definition of hydraulic jumps.

5. 5.

   Design a rectangular channel to carry a flow rate of 100 m³/s with a minimum construction cost. What dimensions would you choose?

   Hint

   Use calculus to find minimum perimeter related to area.

6. 6.

   Explain how you would calculate the energy losses for a hydraulic jump that transitions from an upstream depth of 3 meters, velocity 8 m/s to a downstream depth of 2 meters. Include Froude number calculation.

   Hint

   Use E = y + v²/(2g) to compute energies.