Wetted Perimeter

Written by Jerry Ratzlaff on . Posted in Fluid Dynamics

hydraulic wettedWetting perimeter is the portion of the channel that is in contact with the fluid flowing.

Wetted perimeter Formula

\(\large{ P_w = \frac{ A_c }{ r_h }   }\)

\(\large{ P_w = 2 \; h \; \sqrt  {1  +  z^2 }  }\)     (hydraulic radius)

Where:

\(\large{ P_w }\) = wetting perimeter

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

\(\large{ h }\) = depth of fluid

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

\(\large{ z }\) = width of channel slope

 

Tags: Equations for Hydraulic