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of /home/abouaayt/public_html/aboutcivil/answers/qa-plugin/user-management/layer.php what is exactly critical flow - Civil Engineering Technical Questions Answers - Ask a Civil Engineer
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what is exactly critical flow
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Critical flow is the flow at critical depth in uniform flow.
several conditions for critical flow are:
1)Specific Energy should be minimum
2)Discharge should be maximum
3)Froude number of that flow be unity
4)kinetic energy head is equal to D/2 where D=Hydraulic Depth
Critical depth can be found from the graph between depth vs Specific Energy for  a constant discharge.
If all these cases are satisfied then it is called critical flow.
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