Enhanced Thermal Conductivity UO2-GaN Fuel, Proposed Fabrication Methods and Multiphysics Fuel Behavior Analysis

Research output: Chapters, Conference Papers, Creative and Literary Works (RGC: 12, 32, 41, 45)32_Refereed conference paper (with ISBN/ISSN)peer-review

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Author(s)

Detail(s)

Original languageEnglish
Title of host publicationProceedings of the 2017 25th International Conference on Nuclear Engineering (ICONE25)
PublisherAmerican Society of Mechanical Engineers (ASME)
Volume9
ISBN (Print)9784888982566, 9780791857878
Publication statusPublished - Jul 2017

Publication series

Name
Volume9

Conference

Title25th International Conference on Nuclear Engineering
LocationShanghai International Convention Center
PlaceChina
CityShanghai
Period2 - 6 July 2017

Abstract

In this paper, we first propose a novel composite nuclear fuel of UO2-GaN, which has never been reported before, and then its fully coupled multiphysics fuel performance is investigated using the CAMPUS code developed by ourselves. We propose two different fabrication methods to obtain the UO2-GaN fuel, which are Green Granule/Slug Bisque and Spark Plasma Sintering, respectively, resulting in different fuel thermal conductivities. By comparing two kinds of UO2-GaN fuel which are fabricated by two methods, we found that fuel fabricated by Green Granule/Slug Bisque possesses high thermal conductivity and performs well during the reactor operation. The gap width, gap conductance, fission gas release, plenum pressure, deviation of oxygen to metal ratio and displacement are all studied in this work. The performance of this novel fuel is also compared with the traditional UO2 fuel. The UO2-GaN enhanced thermal conductivity composite fuel shows the potential of decreasing the fuel temperature, and improving fuel performance and reactor safety. This makes GaN a good candidate to fabricate composite fuel with UO2 from the thermal standpoint. However, this work is to conduct an exploratory approach to the effect for the GaN addition to UO2 fuel with very limited data. So, further studies are still needed on GaN’s compatibility with UO2, neutronic behavior, fission product retention capabilities and irradiation performance, both on experimental measurements and numerical simulations.

Research Area(s)

  • Green Granule/Slug Bisque (GG/SB), Multiphysics, Nuclear fuels performance, Spark Plasma Sintering (SPS), UO2-GaN fuel

Bibliographic Note

Full text of this publication does not contain sufficient affiliation information. With consent from the author(s) concerned, the Research Unit(s) information for this record is based on the existing academic department affiliation of the author(s).

Citation Format(s)

Enhanced Thermal Conductivity UO2-GaN Fuel, Proposed Fabrication Methods and Multiphysics Fuel Behavior Analysis. / Zhou, Wei; Liu, Rong; Zhou, Wenzhong.

Proceedings of the 2017 25th International Conference on Nuclear Engineering (ICONE25). Vol. 9 American Society of Mechanical Engineers (ASME), 2017.

Research output: Chapters, Conference Papers, Creative and Literary Works (RGC: 12, 32, 41, 45)32_Refereed conference paper (with ISBN/ISSN)peer-review