Hydraulics and Fluid Mechanics in ME
A streamline is defined as the line

parallel to outer surface of pipe
along which the pressure drop is uniform
parallel to central axis flow
of equal yelocity in a flow

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Hydraulics and Fluid Mechanics in ME
Coefficient of resistance is the ratio of

Loss of head in the orifice to the head of water available at the exit of the orifice
Actual discharge through an orifice to the theoretical discharge
Actual velocity of jet at vena-contracta to the theoretical velocity
Area of jet at vena-contracta to the area of orifice

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