EFFECTS OF SURFACE ROUGHNESS ON SHIP DRAG PREDICTED

The drag characteristics of various surface roughnesses, investigated in tests at the David Taylor Naval Ship R&D Center (DTNSRDC), have been used to predict full-scale ship friction coefficient values. DTNSRDC tests utilized a flat-plate friction plane nd a rotating disk apparatus coated with paint-grit mixtures of different coarsenesses to represent varying degrees of roughness which might exist on full-scale ship hulls. A boundary-layer similarity-law- roughness characterization was determined from the measured torque on the rotating disk and the measured drag on the friction plane. In turn, these values obtained with the disk and friction plane were compared and used to predict full-scale ship friction coefficient values.

  • Corporate Authors:

    Navy Technology Transfer Sheet

    Naval Surface Weapons Center
    Dahlgren, VA  USA  22448
  • Publication Date: 1980-11

Media Info

  • Pagination: n.p.

Subject/Index Terms

Filing Info

  • Accession Number: 00324722
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Feb 18 1981 12:00AM