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

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.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1973
Accession Number
AD0766083

Entities

People

  • David W Taylor
  • John J. Nelka

Tags

Communities of Interest

  • Energy and Power Technologies
  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Angular Momentum
  • Bearings
  • Boundary Layer
  • Boundary Layer Flow
  • Calibration
  • Elements
  • Equations
  • Error Analysis
  • Flexible Couplings
  • Friction
  • Instrumentation
  • Measurement
  • Steady State
  • Surface Roughness
  • Test And Evaluation
  • Two Dimensional
  • United States

Readers

  • Combustion and Flow Dynamics.
  • Fluid Mechanics and Fluid Dynamics.
  • Marine Hydrodynamics

Technology Areas

  • AI & ML
  • AI & ML - Bayesian Inference