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Critical flow is the special case where the froude number (dimensionless) is equal to 1. i.e. The velocity divided by the square root of (gravitational constant multiplied by the depth) =1.
Sub critical flow i has a froude number less than 1, and is therefore characterised by slow moving deep water.
Supercritical flow is defined as having a froude number greater than 1 and is therefore characterised by shallow fast moving flows.
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What is pf fired boiler?
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