Hazen-Williams Head Loss due to Friction
This head loss due to friction formula is used in Hazen-Williams equations.
Hazen-Williams Head Loss due to Friction formulas |
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\( h_f = 4.73\; l_p \; ( Q\;/\;C) ^{1.852} \;/\; d^{4.87} \) (US units) \( h_f = [\;4.73 ( Q\;/\;C)^{1.852}\;] \;( l_p\;/\;d^{4.87} ) \) (US units) \( h_f = [\;10.7 ( Q\;/\;C)^{1.852}\;] \;( l_p\;/\;d^{4.87} ) \) (SI units) |
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Symbol | English | Metric |
\( h_f \) = head loss due to friction | \(ft\) | \(m\) |
\( Q \) = flow rate | \(ft^3\;/\;sec\) | \(m^3\;/\;s\) |
\( C \) = Hazen-Williams coefficient | \(dimensionless\) | |
\( l_p \) = lenght of pipe | \(ft\) | \(m\) |
\( d \) = inside diameter of pipe | \(in\) | \(mm\) |
Tags: Pipe Sizing Head Hazen-Williams