EDDY VISCOSITY AND MIXING LENGTH FROM MEASURED BOUNDARY LAYER DEVELOPMENT

To obtain profiles of shear stress and eddy viscosity, the boundary-layer equations in finite-difference form have been applied to published turbulent-boundary-layer developments measured in nominally two-dimensional conditions. In applying this procedure, measured velocity profiles have been represented by members of Thompson's profile family. Except close to separation, these representations are very satisfactory, and derived shear-stress profiles are generally in good agreement with direct measurements. Various eddy-viscosity and mixing-length models are compared with the results of the analysis and are found in general to differ widely among themselves and from the present results. The widely used assumption, 1=ky in the wall region, appears to be invalid.

  • Corporate Authors:

    Royal Aeronautical Society

    4 Hamilton Place
    London S1V 0BQ,   England 
  • Authors:
    • GALBRAITH, R A
    • Head, M R
  • Publication Date: 1975-5

Media Info

  • Features: References;
  • Pagination: p. 133-154
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00128390
  • Record Type: Publication
  • Source Agency: Engineering Index
  • Files: TRIS
  • Created Date: Jan 14 1976 12:00AM