Three-dimensional computational fluid dynamics for the Spallation Neutron Source liquid mercury target

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Description

The Spallation Neutron Source (SNS) is a high-power accelerator-based pulsed spallation source being designed by a multilaboratory team led by Oak Ridge National Laboratory (ORNL) to achieve high fluxes of neutrons for scientific experiments. Computational fluid dynamics (CFD) is being used to analyze the SNS design. The liquid-mercury target is subjected to the neutronic (internal) heat generation that results from the proton collisions with the mercury nuclei. The liquid mercury simultaneously serves as the neutronic target medium, transports away the heat generated within itself, and cools the metallic target structure. Recirculation and stagnation zones within the target are of particular ... continued below

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8 p.

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Wendel, M.W. & Siman-Tov, M. November 1, 1998.

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Description

The Spallation Neutron Source (SNS) is a high-power accelerator-based pulsed spallation source being designed by a multilaboratory team led by Oak Ridge National Laboratory (ORNL) to achieve high fluxes of neutrons for scientific experiments. Computational fluid dynamics (CFD) is being used to analyze the SNS design. The liquid-mercury target is subjected to the neutronic (internal) heat generation that results from the proton collisions with the mercury nuclei. The liquid mercury simultaneously serves as the neutronic target medium, transports away the heat generated within itself, and cools the metallic target structure. Recirculation and stagnation zones within the target are of particular concern because of the likelihood that they will result in local hot spots. These zones exist because the most feasible target designs include a complete U-turn flow redirection. Although the primary concern is that the target is adequately cooled, the pressure drop from inlet to outlet must also be considered because pressure drop directly affects structural loading and required pumping power. Based on the current design, a three-dimensional CFD model has been developed that includes the stainless steel target structure, the liquid-mercury target flow, and the liquid-mercury cooling jacket that wraps around the nose of the target.

Physical Description

8 p.

Notes

INIS; OSTI as DE99000388

Source

  • Nuclear applications of accelerator technology, Gatlinburg, TN (United States), 20-23 Sep 1998

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  • Other: DE99000388
  • Report No.: ORNL/CP--98989
  • Report No.: CONF-980921--
  • Grant Number: AC05-96OR22464
  • DOI: 10.2172/291067 | External Link
  • Office of Scientific & Technical Information Report Number: 291067
  • Archival Resource Key: ark:/67531/metadc685207

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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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Creation Date

  • November 1, 1998

Added to The UNT Digital Library

  • July 25, 2015, 2:20 a.m.

Description Last Updated

  • May 20, 2016, 1:56 p.m.

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Wendel, M.W. & Siman-Tov, M. Three-dimensional computational fluid dynamics for the Spallation Neutron Source liquid mercury target, report, November 1, 1998; Tennessee. (digital.library.unt.edu/ark:/67531/metadc685207/: accessed December 11, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.