Geometry Optimization of Dispersed U-Mo Fuel for Light Water Reactors

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F23%3A00363650" target="_blank" >RIV/68407700:21340/23:00363650 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1016/j.net.2023.06.003" target="_blank" >https://doi.org/10.1016/j.net.2023.06.003</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.net.2023.06.003" target="_blank" >10.1016/j.net.2023.06.003</a>

Result language

angličtina

Original language name

Geometry Optimization of Dispersed U-Mo Fuel for Light Water Reactors

Original language description

The Uranium/Molybdenum metallic fuel has been proposed as promising advanced fuel concept especially in the dispersed fuel geometry. The fuel is manufactured in the form of small fuel droplets (particles) placed in a fuel pin covered by a matrix. In addition to fuel particles, the pin contains voids necessary to compensate material swelling and release of fission gases from the fuel particles. When investigating this advanced fuel design, two important questions were raised. Can the dispersed fuel performance be analyzed using homogenization without significant inaccuracy and what size of fuel drops should be used for the fuel design to achieve optimal utilization? To answer, 2D burnup calculations of fuel assemblies with different fuel particle sizes were performed. The analysis was supported by an additional 3D fuel pin calculation with the dispersed fuel particle size variations. The results show a significant difference in the multiplication factor between the homogenized calculation and the detailed calculation with precise fuel particle geometry. The recommended fuel particle size depends on the final burnup to be achieved. As shown in the results, for lower burnup levels, larger fuel drops offer better multiplication factor. However, when higher burnup levels are required, then smaller fuel drops perform better.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

20305 - Nuclear related engineering; (nuclear physics to be 1.3);

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2023

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Nuclear Engineering and Technology

ISSN

1738-5733

e-ISSN

2234-358X

Volume of the periodical

55

Issue of the periodical within the volume

9

Country of publishing house

KR - KOREA, REPUBLIC OF

Number of pages

8

Pages from-to

3464-3471

UT code for WoS article

001044030100001

EID of the result in the Scopus database

2-s2.0-85165058636