critical flow

{
  "id": "MLC-T-MET-000608",
  "term": "critical flow",
  "field": "Meteorology and atmospheric science",
  "definition": "In hydrologic terms, a condition of flow where the mean velocity is at one of the critical values; ordinarily at Belanger's critical depth and velocity. Another important usage is in reference to the Reynolds' critical velocities which define the point at which the flow changes from streamline or nonturbulent to turbulent flow.",
  "references": [
    "NWS Glossary"
  ],
  "url": "https://mlchart.com/terminology/meteorology/critical-flow/"
}