Design and modeling considerations relative to the phenomena associated with flow recirculation in branched piping systems

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Design and analytical modeling considerations associated with recirculating flow in piping systems with tee and Y connections are presented. Flow recirculation, in many process piping networks, can produce nonsteady flow and associated thermal conditions. In the flow recirculation discussion, experimental data is presented for a 90 degree branch piping (tee connection) using four different branch pipe sizes over a wide velocity range [Coffield and Kolar (1990)]. The discussion also includes recent test data for a 45 degree, Y connected, branch piping design. Designers can use this information by directly applying the limiting conditions that are presented at the design stage, ... continued below

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6 p.

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Coffield, R.D.; Chauvet, D.M. & Ogle, G.G. December 31, 1996.

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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

Design and analytical modeling considerations associated with recirculating flow in piping systems with tee and Y connections are presented. Flow recirculation, in many process piping networks, can produce nonsteady flow and associated thermal conditions. In the flow recirculation discussion, experimental data is presented for a 90 degree branch piping (tee connection) using four different branch pipe sizes over a wide velocity range [Coffield and Kolar (1990)]. The discussion also includes recent test data for a 45 degree, Y connected, branch piping design. Designers can use this information by directly applying the limiting conditions that are presented at the design stage, or in evaluating the performance of existing systems. For example, although flow recirculation may result in complicated flow patterns, it often can have the beneficial effect of mixing low velocity branch line fluid with the primary system fluid as it approaches the intersection. In branch pipe systems where flows are at different temperatures this recirculation helps attenuate the potential for large thermal stresses. The recirculation flow patterns are strongly affected by the branch angle and thus they are presented as a function of the branch angle.

Physical Description

6 p.

Notes

OSTI as DE99000481

Source

  • 1996 American Society of Mechanical Engineers (ASME) Fluid Engineering Division summer meeting, San Diego, CA (United States), 7-11 Jul 1996

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  • Other: DE99000481
  • Report No.: WAPD-T--3100
  • Report No.: CONF-960738--
  • Grant Number: AC11-93PN38195
  • Office of Scientific & Technical Information Report Number: 291123
  • Archival Resource Key: ark:/67531/metadc678000

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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.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • December 31, 1996

Added to The UNT Digital Library

  • July 25, 2015, 2:20 a.m.

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  • May 16, 2016, 2:09 p.m.

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Coffield, R.D.; Chauvet, D.M. & Ogle, G.G. Design and modeling considerations relative to the phenomena associated with flow recirculation in branched piping systems, article, December 31, 1996; West Mifflin, Pennsylvania. (digital.library.unt.edu/ark:/67531/metadc678000/: accessed November 19, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.