Pressure loss due to pipe friction
The pressure loss due to pipe friction is the pressure loss in a straight, undisturbed pipe section with a constant cross-section.
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Symbol or abbreviation: |
ΔpR |
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Usual unit: |
hPa |
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Equation: |
ΔpR = (l*R) |
The pressure loss (l*R) caused by friction in a straight pipe section with the length l and the internal diameter di depends on the density ρ of the water, the average flow velocity v and the pipe friction coefficient λ.
The pipe friction coefficient λ is usually represented as a function of the Reynolds number Re and the relative roughness k/di in the so-called Moody diagram.
