What does Fanning friction factor represent?

The Fanning friction factor, named after John Thomas Fanning, is a dimensionless number used as a local parameter in continuum mechanics calculations.

What is Fanning friction factor for laminar flow in pipe?

If the formula for laminar flow is f = 16/Re, it is the Fanning factor f, and if the formula for laminar flow is fD = 64/Re, it is the Darcy–Weisbach factor fD. If the value of the friction factor is 0.016, then the Fanning friction factor is plotted in the Moody diagram.

What is the friction factor in turbulent flow?

The friction factor f at a given Reynolds number, in the turbulent region, depends on the relative roughness, defined as the ratio of average roughness to the diameter of the pipe, rather than the absolute roughness.

What is the difference between laminar flow and turbulent flow in determining friction factor f?

The friction factor for laminar flow can be calculated from 64 / Re. Turbulent flow occurs when the Reynolds number exceeds 4000. The ‘relative roughness’ of the pipe and the Reynolds number can be used to plot the friction factor on a friction factor chart.

Why is friction factor calculated?

This friction factor calculator estimates the value of friction factor for pipe flows which is used in several design calculations to determine the energy loss due to friction in pipe flows. The friction factor is commonly used in the Darcy-Weisbach equation and is also referred to as the Darcy friction factor.

Why does friction factor increase with diameter?

The results show that as the Reynolds number of the capsule increases, the friction factor due to solid phase alone decreases. Furthermore, as the capsule to pipe diameter ratio increases, the friction factor due to solid phase in the flow increases.

How is the friction factor for laminar flow calculated?

The value of f, Darcy friction factor is taken from Moody Diagram. The friction factor for laminar flow is calculated by dividing 64 by the Reynold’s number. Friction factor (for laminar flow) = 64 / Re ; This is for circular pipes.

What can the Fanning friction factor be used for?

The Fanning friction factor and the Reynolds number may also be used to determine turbulent flow behavior of non-Newtonian fluids, provided that suitable flow parameters are used. In the past, there has been some question as to what parameter to use for viscosity in the Reynolds number.

How is the Darcy-Weisbach friction factor related to laminar flow?

Various explicit approximations of the related Darcy friction factor have been developed for turbulent flow. Stuart W. Churchill developed a formula that covers the friction factor for both laminar and turbulent flow. This was originally produced to describe the Moody chart, which plots the Darcy-Weisbach Friction factor against Reynolds number.

Which is formula covers both laminar and turbulent flow?

Stuart W. Churchill developed a formula that covers the friction factor for both laminar and turbulent flow. This was originally produced to describe the Moody chart, which plots the Darcy-Weisbach Friction factor against Reynolds number.