Physics

Friction Factor Calculator

Below a Reynolds number of about 2300 in a pipe.

Find the laminar Darcy friction factor from Reynolds number.

Calculated Output

Friction factor 0.0427

Formula: Laminar: f = 64 ÷ Re

Step-by-Step Breakdown

1. Values used:

2. Reynolds number = 1,500

4. Friction factor = 0.0427

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The math behind it

For laminar flow (Re < 2300), f = 64 ÷ Re. Turbulent flow needs the Colebrook equation or Moody chart.

Re = 1500 → f ≈ 0.0427.

When is flow laminar?

Below a Reynolds number of about 2300 in a pipe.