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STATISTICAL PROPERTIES OF VELOCITY DERIVATIVES IN A TURBULENT FIELD. VELOCITY GRADIENTS IN A TURBULENT FIELD

High-speed digital computing methods are applied to the study of the statistical behavior of turbulent velocity derivatives in a nearly isotropic turbulent field downstream of a grid. Higher-order correlations of turbulent velocity gradients, up to the eighth order, are measured. Using non-Gaussion probability distribution laws, the relations between different odd- and even-order correlations are obtained and compared with the experimental measurements. The conditions of similarity and isotropy are evaluated for the small-scale structure as evidenced by the behavior of the turbulent velocity gradients. The concept of intermittency of the small-scale structure is also discussed.

  • Corporate Authors:

    Cambridge University Press

    200 Euston Road
    London NW1,   England 
  • Authors:
    • Frenkiel, F N
    • Klebanoff, P S
  • Publication Date: 1971-7-13

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00032223
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Files: TRIS
  • Created Date: Apr 21 1972 12:00AM