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Friction Coefficient at Laminar Flow

Laminar flow and friction coefficients

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The friction coefficient of a fluid flow at laminar conditions can be expressed as

λ = 64 / Re         (1)

where

λ = friction coefficient (nondimensional)

Re = Reynolds Number (nondimensional)

Equation (1) is only valid at laminar conditions where Reynolds Number is less than 2300. For turbulent conditions where Reynolds Number exceeds 4000, the Colebrook equation should be used to calculate the friction coefficient. 

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Related Topics

  • Fluid Mechanics - The study of fluids - liquids and gases. Involves various properties of the fluid, such as velocity, pressure, density and temperature, as functions of space and time.

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