= Fanning friction factor
{wiki=Fanning_friction_factor}
The Fanning friction factor is a dimensionless quantity used in fluid mechanics to characterize the frictional resistance to flow in a pipe or duct. It is defined as the ratio of the wall shear stress to the dynamic pressure of the fluid. The Fanning friction factor (\\(f\\)) is commonly used in the analysis of laminar and turbulent flow regimes and plays a crucial role in the calculation of pressure losses due to friction in piping systems.
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