Interfacial Friction in Gas-Liquid Annular Flow: Analogies to Full and Transition Roughness

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New film thickness and pressure gradient data were obtained in a 5.08 by 101.6 mm duct for nitrogen and water in annular flow. Pressures of 3.4 and 17 atm and temperatures of 38 and 93 C were used to vary the gas density and liquid viscosity. These data are used to compute interfacial shear stresses and interfacial friction factors for comparison with several accepted literature correlations. These comparisons are reasonable for small values of the relative film thickness. However, the new data cover conditions not approached by the data used to construct those correlations. By combining the current data with ... continued below

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22 p.

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Bauer, R.C.; Beus, S.G. & Fore, L.B. March 1, 1999.

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This article is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 17 times . More information about this article can be viewed below.

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  • Bettis Atomic Power Laboratory
    Publisher Info: Bettis Atomic Power Lab., West Mifflin, PA (United States)
    Place of Publication: West Mifflin, Pennsylvania

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Description

New film thickness and pressure gradient data were obtained in a 5.08 by 101.6 mm duct for nitrogen and water in annular flow. Pressures of 3.4 and 17 atm and temperatures of 38 and 93 C were used to vary the gas density and liquid viscosity. These data are used to compute interfacial shear stresses and interfacial friction factors for comparison with several accepted literature correlations. These comparisons are reasonable for small values of the relative film thickness. However, the new data cover conditions not approached by the data used to construct those correlations. By combining the current data with the results of two other comprehensive modern experimental studies, a new correlation for the interfacial friction factor has been developed. This correlation adds elements of transition roughness to Wallis' fully-rough analogy to better predict interfacial friction factors over a wide range of gas Reynolds numbers and liquid film thicknesses.

Physical Description

22 p.

Notes

OSTI as DE00008003

Medium: P; Size: 22 pages

Source

  • AIChE Annual Meeting, Dallas, TX (US), 10/31/1999--11/05/1999

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  • Report No.: B-T-3258
  • Grant Number: AC11-98PN38206
  • Office of Scientific & Technical Information Report Number: 8003
  • Archival Resource Key: ark:/67531/metadc735154

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Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • March 1, 1999

Added to The UNT Digital Library

  • Oct. 19, 2015, 7:39 p.m.

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  • April 10, 2017, 3:15 p.m.

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Bauer, R.C.; Beus, S.G. & Fore, L.B. Interfacial Friction in Gas-Liquid Annular Flow: Analogies to Full and Transition Roughness, article, March 1, 1999; West Mifflin, Pennsylvania. (digital.library.unt.edu/ark:/67531/metadc735154/: accessed October 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.