Hydrodynamic studies of post dryout two-phase downflow in narrow channels

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An experimental study of the hydrodynamics of a narrow channel was performed in order to obtain the heat transfer mechanisms and influences contributing to the flow regime transition from inverted annular to inverted slug flows for post dryout downflow. The experimental series consisted of both adiabatic and diabatic visualization tests over a wide range of fluid and thermal parameters. The system inlet gas velocities ranged from 0 to 14 meters per second while the inlet fluid velocities ranged from 1 to 3 meters per second. Full extent visualization of the flow regime was possible due to a quartz tube in ... continued below

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38 p.

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Eberle, C.S.; Ishii, M. & Revankar, S.T. July 1, 1995.

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  • Argonne National Laboratory
    Publisher Info: Argonne National Lab., Idaho Falls, ID (United States)
    Place of Publication: Idaho Falls, Idaho

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Description

An experimental study of the hydrodynamics of a narrow channel was performed in order to obtain the heat transfer mechanisms and influences contributing to the flow regime transition from inverted annular to inverted slug flows for post dryout downflow. The experimental series consisted of both adiabatic and diabatic visualization tests over a wide range of fluid and thermal parameters. The system inlet gas velocities ranged from 0 to 14 meters per second while the inlet fluid velocities ranged from 1 to 3 meters per second. Full extent visualization of the flow regime was possible due to a quartz tube in tube construction with a clear heating fluid. Constant temperature heating of the freon was accomplished at bulk fluid temperatures above the critical heat flux temperature. For each hydrodynamic flow condition, one to three minuets of VHS-video filming was performed to acquire both flow regime and break-up length data. In addition to this the flow field parameters were recorded simultaneously with the filming.

Physical Description

38 p.

Notes

INIS; OSTI as DE95014081

Source

  • 1995 National heat transfer conference, Portland, OR (United States), 5-9 Aug 1995

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  • Other: DE95014081
  • Report No.: ANL/IFR/CP--84612
  • Report No.: CONF-950828--13
  • Grant Number: W-31109-ENG-38
  • DOI: 10.2172/83815 | External Link
  • Office of Scientific & Technical Information Report Number: 83815
  • Archival Resource Key: ark:/67531/metadc788050

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Office of Scientific & Technical Information Technical Reports

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

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Creation Date

  • July 1, 1995

Added to The UNT Digital Library

  • Dec. 3, 2015, 9:30 a.m.

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  • Jan. 6, 2016, 4:53 p.m.

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Eberle, C.S.; Ishii, M. & Revankar, S.T. Hydrodynamic studies of post dryout two-phase downflow in narrow channels, report, July 1, 1995; Idaho Falls, Idaho. (digital.library.unt.edu/ark:/67531/metadc788050/: accessed November 12, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.