Hazen-Williams Flow Through a Pressurized Pipe Equation
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| \( p_d \;=\; \dfrac{ 4.52 \cdot Q^{1.852} }{ C^{1.852} \cdot d^{4.8704} }\) (US units) | ||
| Symbol | English | Metric |
| \( p_d \) = Pressure Drop Over the Length of Pipe | \(lbf\;/\;in^2\) | \(Pa\) |
| \( Q \) = Flow Rate | \(ft^3\;/\;sec\) | \(m^3\;/\;s\) |
| \( C \) = Hazen-Williams Coefficient | \(dimensionless\) | \(dimensionless\) |
| \( d \) = Pipe Inside Diameter | \(in\) | \(mm\) |
The Hazen-Williams Equation can be used for flow through an open channel or through a pressurized pipe.
Hazen-Williams Flow Through a Pressurized Pipe Equation
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| \( p_d \;=\; \dfrac{ 10.67 \cdot Q^{1.852} }{ C^{1.852} \cdot d^{4.8704} } \) (SI units) | ||
| Symbol | English | Metric |
| \( p_d \) = Pessure Drop Over the Length of Pipe | \(lbf\;/\;in^2\) | \(Pa\) |
| \( Q \) = Flow Rate | \(ft^3\;/\;sec\) | \(m^3\;/\;s\) |
| \( C \) = Hazen-Williams Coefficient | \(dimensionless\) | \(dimensionless\) |
| \( d \) = Pipe Inside Diameter | \(in\) | \(mm\) |