Term of the Road Dictionary

critical flow

  • Language : PIARC Road Dictionary / English
  • Theme : Roads Drainage and Sewerage
  • Definition : Flow conditions at which the discharge is a maximum for a given specific energy, or at which the specific energy is minimum for a given discharge [Termium Plus®]. Notes: 1. Theoretical limit between subcritical flow and supercritical flow [Egis/PIARC]. 2. Under this condition the Froude number will be equal to unity and surface disturbances will not travel upstream [Termium Plus®].

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