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3 cards from this section. Quick, good the night before a test.
What is specific energy?
Think of the components that contribute to energy in flowing water.
State the equation for critical depth.
Recall how discharge relates to flow depth.
What defines specific energy in an open channel?
Remember the components of energy in fluid mechanics.
The critical depth is where which flow condition occurs?
Consider the significance of the Froude number in flow transitions.
A rectangular open channel has a width of 5 meters and a discharge of 15 m³/s. Determine the critical depth and assess the flow regime at a depth of 1.2 meters. Is the flow subcritical or supercritical?
Calculate the critical depth first and compare it with actual depth.
A canal flowing at a critical depth of 1.5 meters has a cross-section width of 6 meters. Determine the specific energy and the velocity at this critical state.
Use the definitions of specific energy and discharge to find the values.
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