Expert Knowledge in Water Treatment

Turbulence

Turbulent and laminar flow in fluid mechanics

Turbulence is a term from fluid mechanics that describes the flow pattern of a fluid (such as water).

A distinction is made between laminar flow and turbulent flow. A transitional range, where the flow exhibits both laminar and turbulent characteristics, separates the two phases.

The phase in which the system is located can be determined by calculating the Reynolds number. The following limits apply:

  • Laminar: Re < 2300
  • Turbulent: Re > 4000
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