Hydraulic Radius of a Pipe

Written by Jerry Ratzlaff on . Posted in Fluid Dynamics

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

Hydraulic Radius of a Pipe formula

\(\large{ r_h =  \frac  {  A }  { P }   }\)     


\(\large{ r_h }\) = hydraulic radius

\(\large{  A }\) = cross-section flow area

\(\large{ P }\) = wetted perimeter

Solve for:

\(\large{ A =  r_h \; P  }\)

\(\large{ P =  A \; r_h }\)


Tags: Equations for Pipe Equations for Hydraulic