Hydraulic Radius of a Triangular Channel Formula |
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\( r_h \;=\; \dfrac{ A_c }{ P_w }\) (Hydraulic Radius of a Triangular Channel) \( A_c \;=\; r_h \cdot P_w \) \( P_w \;=\; \dfrac{ A_c }{ r_h }\) |
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| Symbol | English | Metric |
| \( r_h \) = Hydraulic Radius | \(ft\) | \(m\) |
| \( A_c \) = Flow Area Cross-section | \(ft^2\) | \(m^2\) |
| \( P_w \) = Wetting Perimeter | \(ft\) | \(m\) |
Hydraulic radius, abbreviated as \(r_h\), is the area cross-section of water in a pipe or channel divided by the wetting perimeter. The hydraulic radius (R) of an open channel, including a triangular channel, is a measure of the channel's efficiency in conveying flow. It is defined as the cross-sectional area of flow divided by the wetted perimeter.
Hydraulic Radius of a Triangular Channel Formula |
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| \( r_h \;=\; \dfrac{ z \cdot h^2 }{ 2 \cdot h \cdot \sqrt{1 + z^2 } }\) | ||
| Symbol | English | Metric |
| \( r_h \) = Hydraulic Radius | \(ft\) | \(m\) |
| \( z \) = Width of Channel Slope | \(ft\) | \(m\) |
| \( h \) = Fluid Depth | \(ft\) | \(m\) |