Corrected flow

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Corrected Flow is the mass flow that would pass through a device (e.g. compressor, bypass duct, etc.) if the inlet pressure and temperature corresponded to ambient conditions at Sea Level, on a Standard Day (e.g. 14.696 lbf/in², 518.7R).

Corrected Flow, , can be calculated as follows, assuming Imperial Units:

Corrected Flow is often given the symbol or (for referred flow).

So-called Non-Dimensional Flow, , is proportional to Corrected Flow:

The equivalent equations for Preferred SI Units are: (101.325kPa, 288.15K)


  • Stagnation (or Total) Pressure
  • Stagnation (or Total) Temperature
  • Real Mass Flow
  • Referred Pressure
  • Referred Temperature

In relative form, Corrected Flow, Referred Flow and Non-Dimensional Flow are all measures of axial Mach number.

Side note: If the mass flow can be considered an energy source such as fuel flow, the corrected flow is calculated as follows:

See also[edit]