6.4. Classification of Flow Profiles

Try these first

1. 1.

   What is gradually varied flow?

   Hint

   Think about how flow changes in open channels.

2. 2.

   What does a mild slope indicate?

   Hint

   Recall the relationship between normal and critical depth.

3. 3.

   What is a mild slope in an open channel flow?

   • Normal depth equals critical depth
   • Normal depth is less than critical depth
   • Normal depth is greater than critical depth

   Hint

   Refer to our classification discussion.

4. 4.

   Is there a normal depth in a horizontal bed?

   • True
   • False

   Hint

   Consider the definition of horizontal bed channels.

5. 5.

   Given a channel with a normal depth of 1 m and critical depth of 0.75 m, classify the channel type and provide reasoning.

   Hint

   Reflect on the relationships discussed between the depths.

6. 6.

   If a river has a horizontal bed with a flow of 10 m³/s, discuss whether normal depth exists and justify your answer.

   Hint

   Consider how a horizontal slope affects flow.