Hazen-Williams Flow through a Pressurized Pipe Equation
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 formulas |
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\(\large{ p_d = \frac{4.52 \; Q^{1.852}} {C^{1.852} \; d^{4.8704}} }\) (US units) \(\large{ p_d = \frac{10.67 \; Q^{1.852}} {C^{1.852} \; d^{4.8704}} }\) (SI units) |
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| Symbol | English | Metric |
| \(\large{ p_d }\) = pressure drop over the length of pipe | \(\large{\frac{lbf}{in^2}}\) | \(\large{Pa}\) |
| \(\large{ Q }\) = flow rate | \(\large{\frac{ft^3}{sec}}\) | \(\large{\frac{m^3}{s}}\) |
| \(\large{ C }\) = Hazen-Williams coefficient | \(\large{dimensionless}\) | |
| \(\large{ d }\) = inside diameter of pipe | \(\large{in}\) | \(\large{mm}\) |
Tags: Pipe Sizing Equations Flow Equations Hazen-Williams Equations