Wetted Perimeter
Wetting perimeter is the portion of the channel that is in contact with the fluid flowing.
Wetted perimeter formulas
\(\large{ P_w = \frac{ A_c }{ r_h } }\) | |
\(\large{ P_w = 2 \; h \; \sqrt {1 + z^2 } }\) | (hydraulic radius) |
\(\large{ P_w = r \; \theta }\) | (Hydraulic Radius of a Partially Full Pipe (Less than Half Full)) |
\(\large{ P_w = 2 \; \pi \; r - r \; \theta }\) | (Hydraulic Radius of a Partially Full Pipe (More than Half Full)) |
Where:
\(\large{ P_w }\) = wetting perimeter
\(\large{ A_c }\) = area cross-section of flow
\(\large{ \theta }\) (Greek symbol theta) = degree
\(\large{ h }\) = depth of fluid
\(\large{ r_h }\) = hydraulic radius
\(\large{ \pi }\) = Pi
\(\large{ r }\) = radius
\(\large{ z }\) = width of channel slope
Tags: Equations for Hydraulic