Hydraulic Radius

Written by Jerry Ratzlaff on . Posted in Fluid Dynamics

hydraulic wettedhydraulic wetted pipeHydraulic radius, abbreviated as \(r_h\), is the area cross-section of water in a pipe or channel divided by the wetting perimeter.

 

 

 

 

 

 

 

 

Hydraulic radius formula

\(\large{ r_h =  \frac{  A_c }{ P_w }  }\) 
Symbol English Metric
\(\large{ r_h }\) = hydraulic radius  \(\large{ ft }\) \(\large{ m }\) 
\(\large{ A_c }\) = area cross-section of flow \(\large{ ft^2 }\) \(\large{ m^2 }\)
\(\large{ P_w }\) = wetting perimeter \(\large{ ft }\) \(\large{ m }\)

 

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Tags: Pipe Equations Hydraulic Equations