Laws of Flow in Rough Pipes

One of 1,437 reports in the series: NACA Technical Memorandums available on this site.

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Description

An experimental investigation is made of the turbulent flow of water in pipes with various degrees of relative roughness. The pipes range in size from 25 to 100 millimeters in diameter and from 1800 to 7050 millimeters in length. Flow velocities permitted Reynolds numbers from about 10 (sup. 4) to 10 (sup. 6). The laws of resistance and velocity distributions were obtained as a function of relative roughness and Reynolds number. Mixing length, as described by Prandtl's mixing-length formula, is discussed in relation to the experimental results.

Physical Description

62 p. : ill.

Creation Information

Nikuradse, J. November 1950.

Context

This report is part of the collection entitled: National Advisory Committee for Aeronautics Collection and one other and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 1057 times , with 12 in the last month . More information about this report can be viewed below.

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Titles

  • Main Title: Laws of Flow in Rough Pipes
  • Series Title: NACA Technical Memorandums
  • Parallel Title: Strömungsgesetze in rauhen Rohren

Description

An experimental investigation is made of the turbulent flow of water in pipes with various degrees of relative roughness. The pipes range in size from 25 to 100 millimeters in diameter and from 1800 to 7050 millimeters in length. Flow velocities permitted Reynolds numbers from about 10 (sup. 4) to 10 (sup. 6). The laws of resistance and velocity distributions were obtained as a function of relative roughness and Reynolds number. Mixing length, as described by Prandtl's mixing-length formula, is discussed in relation to the experimental results.

Physical Description

62 p. : ill.

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Identifier

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  • Accession or Local Control No: 93R23264
  • URL: http://hdl.handle.net/2060/19930093938 External Link
  • Report No.: NACA-TM-1292
  • Center for AeroSpace Information Number: 19930093938
  • Archival Resource Key: ark:/67531/metadc63009

Collections

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National Advisory Committee for Aeronautics Collection

The National Advisory Committee for Aeronautics (NACA) was a U.S. federal agency founded on March 3, 1915 to undertake, promote, and institutionalize aeronautical research. On October 1, 1958 the agency was dissolved, and its assets and personnel transferred to the newly created National Aeronautics and Space Administration (NASA).

Technical Report Archive and Image Library

This selection of materials from the Technical Report Archive and Image Library (TRAIL) includes hard-to-find reports published by various government agencies. The technical publications contain reports, images, and technical descriptions of research performed for U.S. government agencies. Topics range from mining, desalination, and radiation to broader physics, biology, and chemistry studies. Some reports include maps, foldouts, blueprints, and other oversize materials.

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Creation Date

  • November 1950

Added to The UNT Digital Library

  • Nov. 17, 2011, 5:13 p.m.

Description Last Updated

  • Sept. 12, 2018, 10 a.m.

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Nikuradse, J. Laws of Flow in Rough Pipes, report, November 1950; (digital.library.unt.edu/ark:/67531/metadc63009/: accessed December 17, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.