Scaling of Quench Front and Entrainment-Related Phenomena

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The scaling of thermal hydraulic systems is of great importance in the development of experiments in laboratory-scale test facilities that are used to replicate the response of full-size prototypical designs. One particular phenomenon that is of interest in experimental modeling is the quench front that develops during the reflood phase in a PWR (Pressurized Water Reactor) following a large-break LOCA (Loss of Coolant Accident). The purpose of this study is to develop a scaling methodology such that the prototypical quench front related phenomena can be preserved in a laboratory-scale test facility which may have material, geometrical, fluid, and flow differences ... continued below

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Aumiller, D. L.; Hourser, R. J.; Holowach, M. J.; Hochreiter, L. E. & Cheung, F-B. April 2002.

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Description

The scaling of thermal hydraulic systems is of great importance in the development of experiments in laboratory-scale test facilities that are used to replicate the response of full-size prototypical designs. One particular phenomenon that is of interest in experimental modeling is the quench front that develops during the reflood phase in a PWR (Pressurized Water Reactor) following a large-break LOCA (Loss of Coolant Accident). The purpose of this study is to develop a scaling methodology such that the prototypical quench front related phenomena can be preserved in a laboratory-scale test facility which may have material, geometrical, fluid, and flow differences as compared to the prototypical case. A mass and energy balance on a Lagrangian quench front control volume along with temporal scaling methods are utilized in developing the quench front scaling groups for a phenomena-specific second-tier scaling analysis. A sample calculation is presented comparing the quench front scaling groups calculated for a prototypical Westinghouse 17 x 17 PWR fuel design and that of the geometry and material configuration used in the FLECHT SEASET series of experiments.

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INIS; OSTI as DE00800995

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  • Journal Name: Nuclear Engineering and Design (submitted to); Other Information: Submitted to Nuclear Engineering and Design

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  • Report No.: B-T-3432
  • Grant Number: AC11-98PN38206
  • Office of Scientific & Technical Information Report Number: 800995
  • Archival Resource Key: ark:/67531/metadc742835

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  • April 2002

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  • Oct. 19, 2015, 7:39 p.m.

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  • Nov. 6, 2015, 10:19 p.m.

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Aumiller, D. L.; Hourser, R. J.; Holowach, M. J.; Hochreiter, L. E. & Cheung, F-B. Scaling of Quench Front and Entrainment-Related Phenomena, article, April 2002; West Mifflin, Pennsylvania. (digital.library.unt.edu/ark:/67531/metadc742835/: accessed September 24, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.