Direct interaction approximation

{
  "id": "MLC-T-MET-005036",
  "term": "Direct interaction approximation",
  "field": "Meteorology and atmospheric science",
  "definition": "A theoretical closure method used in the study of fluid turbulence to approximate the effects of nonlinear interactions. It provides a set of self-consistent equations for the two-point correlation functions of a turbulent velocity field. The DIA is a two-point, two-time closure that accounts for the cumulative effect of all scales of motion on a given scale, but it is known to have deficiencies in predicting the inertial range energy spectrum.",
  "url": "https://mlchart.com/terminology/meteorology/direct-interaction-approximation/"
}