Hydraulic Radius of a Rectangular Channel

on 19 February 2018. Posted in Fluid Dynamics

hydraulic radius of a rectangle 3 Hydraulic radius, abbreviated as \(r_h\), is the area cross-section of water in a pipe or channel divided by the wetting perimeter.

Hydraulic Radius of a Rectangular Channel Formula
\( r_h \;=\; \dfrac{ w \cdot h }{ w + 2 \cdot h }\) (Hydraulic Radius of a Rectangular Channel) \( w \;=\; \dfrac{ - 2 \cdot r_h \cdot h }{ r_h - h }\) \( h \;=\; \dfrac{ - r_h \cdot w }{ 2 \cdot r_h - w }\)
Symbol	English	Metric
\( r_h \) = hydraulic radius	\( ft \)	\( m \)
\( w \) = width of fluid	\( ft \)	\( m \)
\( h \) = depth of fluid	\( ft \)	\( m \)

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