14.1.6. Froude Number

Try these first

1. 1.

   What does the Froude Number compare?

   Hint

   Think about what forces affect fluid flow.

2. 2.

   How is the Froude Number calculated?

   Hint

   Recall the variables in the formula.

3. 3.

   What does a Froude Number below 1 indicate?

   • Supercritical flow
   • Subcritical flow
   • Transitional flow

   Hint

   Think about the force that is more influential in that case.

4. 4.

   The Froude Number is given by which formula?

   Hint

   Recall the key variables involved in its calculation.

5. 5.

   Design a spillway for a river with a predicted Froude Number of 0.75. What considerations should be made to ensure safety?

   Hint

   Assess the flow conditions and ensure stability against forces.

6. 6.

   Given a Froude Number of 3 in an open channel flow, determine the implications for sediment transport and flood risks.

   Hint

   Think about how faster moving water interacts with surroundings.