Influence of tube-entrance configuration on average heat-transfer coefficients and friction factors for air flowing in an Inconel tube

One of 5,164 reports in the series: NACA Research Memorandums available on this site.

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Description

A heat-transfer investigation was conducted with air flowing through an electrically heated Inconel tube having either a long-approach or a right-angle-edge entrance, an inside diameter of 0.402 inch, and a length of 24 inches over a range of Reynolds numbers up to 375,000 and average inside-tube-wall temperatures up to 2000 degrees R. Good correlation of heat-transfer data was obtained for both entrances, which substantiates work previously reported. A fair correlation of friction data was obtained for both entrances. The entrance configuration had little effect on the average heat-transfer and friction coefficients.

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Lowdermilk, Warren H & Grele, Milton D August 23, 1950.

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  • Main Title: Influence of tube-entrance configuration on average heat-transfer coefficients and friction factors for air flowing in an Inconel tube
  • Series Title: NACA Research Memorandums

Description

A heat-transfer investigation was conducted with air flowing through an electrically heated Inconel tube having either a long-approach or a right-angle-edge entrance, an inside diameter of 0.402 inch, and a length of 24 inches over a range of Reynolds numbers up to 375,000 and average inside-tube-wall temperatures up to 2000 degrees R. Good correlation of heat-transfer data was obtained for both entrances, which substantiates work previously reported. A fair correlation of friction data was obtained for both entrances. The entrance configuration had little effect on the average heat-transfer and friction coefficients.

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  • : 93R15463
  • URL: http://hdl.handle.net/2060/19930086173 External Link
  • Report No.: NACA-RM-E50E23
  • Center for AeroSpace Information Number: 19930086173
  • Archival Resource Key: ark:/67531/metadc58456

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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).

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  • August 23, 1950

Added to The UNT Digital Library

  • Nov. 16, 2011, 7:33 a.m.

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  • Jan. 30, 2017, 1:37 p.m.

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Lowdermilk, Warren H & Grele, Milton D. Influence of tube-entrance configuration on average heat-transfer coefficients and friction factors for air flowing in an Inconel tube, report, August 23, 1950; (digital.library.unt.edu/ark:/67531/metadc58456/: accessed August 18, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.