Eddy-stress tensor

{
  "id": "MLC-T-MET-005277",
  "term": "Eddy-stress tensor",
  "field": "Meteorology and atmospheric science",
  "definition": "A 3x3 symmetric tensor representing the flux of momentum due to turbulent fluctuations, or eddies, in a fluid flow. Its components, known as Reynolds stresses, are calculated as the time-averaged product of fluctuating velocity components. For example, the component τ_xy = -ρu'v' (where ρ is density and u', v' are velocity fluctuations) represents the turbulent shear stress.",
  "see_also": [
    "Reynolds stresses",
    "stress tensor"
  ],
  "url": "https://mlchart.com/terminology/meteorology/eddy-stress-tensor/"
}