Experiences with the FIDAP code in analysis of a natural convection problem of an LMR primary heat transport system.

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The Experimental Breeder Reactor II (EBR-II) at Argonne National Laboratory (ANL) West in Idaho is currently undergoing a plant closing operation, and a number of technical issues need to be addressed. This paper is related to the heat transfer analysis support effort performed for the upcoming draining operation of the primary sodium from the primary system tank. The issue addressed was how much of heat input would be required to the sodium if it were to be maintained in the liquid state during the prolonged period of the draining operation. The fluid dynamics analysis package FIDAP Code of Fluent Incorporated ... continued below

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12 p.

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Dean, E. M. & Shin, Y. W. February 24, 1999.

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Description

The Experimental Breeder Reactor II (EBR-II) at Argonne National Laboratory (ANL) West in Idaho is currently undergoing a plant closing operation, and a number of technical issues need to be addressed. This paper is related to the heat transfer analysis support effort performed for the upcoming draining operation of the primary sodium from the primary system tank. The issue addressed was how much of heat input would be required to the sodium if it were to be maintained in the liquid state during the prolonged period of the draining operation. The fluid dynamics analysis package FIDAP Code of Fluent Incorporated was used to model the primary tank system. It was possible to obtain solutions to the model in most of the cases considered, which provided the needed information for the project. However, certain appropriate choices of the solution algorithms were necessary in certain cases and in addition certain special measures had to be followed in order to successfully utilize the solution. In certain other instances, only some entirely different algorithm was the only successful choice, while in some other limited instances none of the algorithms or the special measures that were satisfactory for the earlier cases proved successful. Several configurations of the model with varying sodium levels to represent the quasi-steady state draining operation are considered. The reference configuration of the model was first calculated and the results are compared with measurement data. The model thus benchmarked to the reference case then was calculated for other model configurations. This paper discusses details of the experiences we gained, including successes, the difficulties we had to overcome, and in some instances the eventual failures. The results of the successful calculations are first presented. For each of the model configurations calculated, various computational aspects are then discussed in view of the numerical stability, convergence, and robustness of the solution algorithms in use. Finally, effects of certain model simplifications on the solutions and performance of the solution algorithms are discussed.

Physical Description

12 p.

Notes

INIS; OSTI as DE00012373

Medium: P; Size: 12 pages

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  • Fluids Engineering Division Annual Summer Meeting and 3rd ASME/JSME Joint Fluids Engineering Conference, San Francisco, CA (US), 07/18/1999--07/22/1999

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  • Report No.: ANL/RE/CP-98467
  • Grant Number: W-31109-ENG-38
  • Office of Scientific & Technical Information Report Number: 12373
  • Archival Resource Key: ark:/67531/metadc625243

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  • February 24, 1999

Added to The UNT Digital Library

  • June 16, 2015, 7:43 a.m.

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  • April 6, 2017, 8:12 p.m.

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Dean, E. M. & Shin, Y. W. Experiences with the FIDAP code in analysis of a natural convection problem of an LMR primary heat transport system., article, February 24, 1999; Illinois. (digital.library.unt.edu/ark:/67531/metadc625243/: accessed November 18, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.