4.1. Gradually Varying Flow Assumption

Try these first

1. 1.

   What is the assumption for gradually varying flow?

   Hint

   Consider how the flow changes along the channel.

2. 2.

   Define Bernoulli's Equation.

   Hint

   Think about energy conservation in fluid flow.

3. 3.

   What is the maximum acceptable value for dy/dx in gradually varying flow?

   • 0
   • 1
   • 10

   Hint

   Think about the gradual change in depth.

4. 4.

   Is the following statement true? 'Bernoulli's equation applies under all conditions in fluid flow.'

   • True
   • False

   Hint

   Consider the nature of the assumptions in Bernoulli's principle.

5. 5.

   A channel has a depth that varies from 2 ft to 3 ft over a distance of 50 ft. Derive the equation relating flow velocity changes to the slope using Bernoulli's principles.

   Hint

   Use energy conservation and differentiate between depth changes.

6. 6.

   If the flow has a Froude number of 0.8, explain its significance and implications for flow type in a channel.

   Hint

   Draw connections between flow types and energy regimes.