What is the Moody friction factor?

What is the Moody friction factor?

The friction factor or Moody chart is the plot of the relative roughness (e/D) of a pipe against the Reynold’s number. The blue lines plot the friction factor for flow in the wholly turbulent region of the chart, while the straight black line plots the friction factor for flow in the wholly laminar region of the chart.

What does the Moody friction factor chart give you?

In engineering, the Moody chart or Moody diagram (also Stanton diagram) is a graph in non-dimensional form that relates the Darcy–Weisbach friction factor fD, Reynolds number Re, and surface roughness for fully developed flow in a circular pipe. It can be used to predict pressure drop or flow rate down such a pipe.

What does friction factor depend on?

relative roughness
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 formula of friction factor for laminar flow?

When the fluid flow is laminar (Re < 2000), the friction factor has a direct relationship on the Reynolds number, such that: f m = 64 / Re or f f = 16 / Re .

What is the formula for friction loss?

Consider the equation: FL = c × (gpm/100)2 × L/100. The “c” term is the so-called friction loss factor and measures the pressure loss per 100 feet. This is multiplied by the square of the volume flow (gpm) and hose length (L) to get total friction loss.

How do you calculate friction factor?

The amount of friction mainly depends on the “normal force,” which surfaces exert on the objects sitting on them, as well as the characteristics of the specific surface you’re considering. For most purposes, you can use the formula F = μN to calculate friction, with N standing for the “normal” force…

What is the equation for friction factor?

The formula that lets you calculate the friction force is very simple: F = μ * N. where: F is the force of friction, measured in Newtons ; μ is the dimensionless coefficient of friction, and.

What is the friction factor of a pipe?

Friction factor (μ) is defined as the ratio between the force required to move a section of pipe and the vertical contact force applied by the pipe on the seabed.

What is a friction factor?

Friction Factor. Friction factor (μ) is defined as the ratio between the force required to move a section of pipe and the vertical contact force applied by the pipe on the seabed.