Feasibility study of the application of exotic pin for tight-lattice fuel assembly

A. Khakim, E. Merzari, H. Ninokata

Research output: Contribution to journalConference articlepeer-review

1 Scopus citations


The tight-lattice fuel assembly having less space for the coolant is more feasibly applied in Liquid Metal Fast Breeder Reactor (LMFBR). In addition, the thermal hydraulic constraint can be compensated by the high heat capacity of the liquid metal. Tight pin array provides high fuel volume fraction which eventually gives better neutronic performance. Cylindrical pin provides less flexible arrangement for tight-lattice assembly, which results in very small coolant gaps with its neighboring pins. Therefore, the so-called exotic pin shape is introduced which distributes the coolant flow more evenly, to be applied in tight-lattice bundle with sodium coolant. The calculation is performed using STAR-CD code by employing k-ε turbulent model, with one-third of channel flow as the minimum calculation domain for exotic pin.

Original languageEnglish (US)
Pages (from-to)747
Number of pages1
JournalTransactions of the American Nuclear Society
StatePublished - 2009
Event2009 ANS Annual Meeting and Embedded Topical Meeting: Nuclear and Emerging Technologies for Space, NETS 2009 - Atlanta, GA, United States
Duration: Jun 14 2009Jun 18 2009

All Science Journal Classification (ASJC) codes

  • Nuclear Energy and Engineering
  • Safety, Risk, Reliability and Quality


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