The Drag of a Circular Cylinder on or Near a Flat Plate Appropriate for Ship-Model Turbulence Stimulators.

Abstract

Experiments were conducted to determine the drag coefficient C(D) of the tripwire and the approximate location of boundary layer flow transition. The investigation was performed with a simplified model of a circular cylinder placed on or near a flat plate. The experimental conditions were those typical of ship-model appendage drag experiments. One of the purposes was to obtain a formula for CD when there is a gap between the cylinder and the flat plate. An example of the drag prediction of an appendage, modeled as a flat plate, is given based on the new C(D) and the prediction method recommended here. A comparison with the result obtained using the prediction method currently in use at DTNSRDC is made. The results indicate that both the effect of a gap, if it exists, on the tripwire drag and the effect of the presence of the tripwire on the turbulent skin friction must be considered.

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1983
Accession Number
ADA126155

Entities

People

  • Chao-ho Sung
  • David W Taylor
  • Douglas S. Jenkins

Tags

Communities of Interest

  • Energy and Power Technologies
  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Boundary Layer
  • Boundary Layer Flow
  • Data Acquisition
  • Flow
  • Free Stream
  • Laminar Boundary Layer
  • Leading Edges
  • Measurement
  • Model Tests
  • Plastic Explosives
  • Pressure Measurement
  • Reynolds Number
  • Ship Models
  • Skin Friction
  • Test Facilities
  • Turbulent Boundary Layer
  • Turbulent Flow

Fields of Study

  • Physics

Readers

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