Accession Number:

AD0766083

Title:

Evaluation of a Rotating Disk Apparatus: Drag of a Disk Rotating in a Viscous Fluid

Descriptive Note:

Final rept.

Corporate Author:

DAVID W TAYLOR NAVAL SHIP RESEARCH AND DEVELOPMENT CENTER BETHESDA MD SHIP PERFORMANCE DEPT

Personal Author(s):

Report Date:

1973-07-01

Pagination or Media Count:

50.0

Abstract:

A rotating disk apparatus, designed to attain high shear stresses comparable to those about hulls of full-scale ships is evaluated. Shear stresses were not measured but were inferred from measurements of disk moments. Two disk surfaces were evaluated, hydraulically smooth and sandpaper rough. For the smooth and rough surface disks in air, the experimental moment coefficients were generally greater than the theoretical predictions. Only the smooth surface disk in water gave results lower than predictions.

Subject Categories:

  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE