Aerodynamically smooth surface

{
  "id": "MLC-T-MET-003336",
  "term": "Aerodynamically smooth surface",
  "field": "Meteorology and atmospheric science",
  "definition": "A surface where the roughness elements are small enough to be entirely submerged within the viscous sublayer of the airflow, resulting in minimal turbulence directly at the surface. For these surfaces, the drag coefficient is primarily dependent on the Reynolds number. Examples include calm water, ice, and very flat, paved areas.",
  "see_also": [
    "aerodynamically rough surface"
  ],
  "url": "https://mlchart.com/terminology/meteorology/aerodynamically-smooth-surface/"
}