Practice Specific Energy Approach (15.3) - Overview - Fluid Mechanics

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6 sample questions

Question 1.
Define Specific Energy in your own words.
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Think about energy components related to pressure and velocity.
Question 2.
What are the flow regimes based on Froude numbers?
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Recall how the inertia and gravity forces relate.
3Question 3.
What is specific energy?
- A measure of velocity
- Total energy per unit weight of fluid
- The flow depth alone
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Focus on the components that make up specific energy.
4Question 4.
In which flow regime do disturbances propagate upstream?
- True
- False
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Think about the Froude number definitions.
Question 5.
Given an open channel flow where the depth is 3m and velocity is 5m/s, calculate the specific energy and identify the flow regime. If the channel is designed to carry 120m³/s, what could the critical depth be?
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Utilize specific energy equations for calculations and consider flow discharge.
Question 6.
Discuss how you would design an irrigation channel using specific energy principles to minimize energy loss while maximizing flow efficiency.
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Research trade-offs between depth and velocity.

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