ON THE INFLUENCE OF DEPOSITS IN TUBES ON HYDRAULIC PRESSURE DROP

Abstract

In the first pressure section of the Ecker long-distance water pipeline, considerable decreases in the rate of flow occur in years of low operation which can be traced back to a special corrugation of the film of grease deposited in the system. The small depth of the deposit in relation to the pipe diameter and its technical flow behavior, different in nature from that of hitherto investigated roughnesses, make it probable that it is a matter of a new specific type of roughness. This discussion is preceded by a review of the general theory of flow in pipe lines.

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Document Details

Document Type
Technical Report
Publication Date
Sep 15, 1964
Accession Number
AD0606777

Entities

People

  • Wilhelm Wiederhold

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Boundary Layer
  • Drops
  • Dynamic Pressure
  • Engineering
  • Films
  • Hydroxides
  • Internal Pressure
  • Materials
  • Measurement
  • Measuring Instruments
  • Particles
  • Pipes
  • Reynolds Number
  • Roughness
  • Static Pressure
  • Thin Films
  • Tubes

Readers

  • Electrical Engineering
  • Fluid Mechanics and Fluid Dynamics.
  • Theoretical Analysis.