Local Mach number

{
  "id": "MLC-T-MET-007015",
  "term": "Local Mach number",
  "field": "Meteorology and atmospheric science",
  "definition": "The ratio of the local flow velocity of a fluid to the local speed of sound in that fluid. This dimensionless quantity indicates whether the flow is subsonic, sonic, or supersonic at a specific point within a fluid dynamic system. It is a key parameter in aerodynamic analysis, particularly for aircraft design and atmospheric reentry vehicles.",
  "url": "https://mlchart.com/terminology/meteorology/local-mach-number/"
}