Hydraulic Radius of a Partially Full Pipe (Less than Half Full)

Written by Jerry Ratzlaff on . Posted in Fluid Dynamics

hydraulic radius of a pipe less than halfHydraulic Radius of a Partially Full Pipe (Less than Half Full) formula

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

Where:

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

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

\(\large{ \theta }\)   (Greek symbol theta) = degree

\(\large{ r }\) = radius

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

Solve for:

\(\large{ A =  \frac  { r^2 \left( \theta \;-\; sin \; \theta  \right)  }  { 2 }   }\)

\(\large{ P =  r \;  \theta }\)

 

Tags: Equations for Hydraulic