VVER-1000 fuel assembly model in CAD-based unstructured mesh for MCNP6

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23220%2F18%3A43953903" target="_blank" >RIV/49777513:23220/18:43953903 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

VVER-1000 fuel assembly model in CAD-based unstructured mesh for MCNP6

Popis výsledku v původním jazyce

Geometry models for Monte Carlo transport codes have been using standard constructive solid geometry (CSG). The standard approach is using analytical equations for defining surfaces from which spatial cells are constructed. Both union and intersection operators are available, therefore, arbitrary 3-D geometry can be modeled with CSG. However, this approach can be quite time consuming and possibly error prone for complex models. Monte Carlo transport codes are continuously developed, one of the paths is using CAD-based mesh geometry. MCNP6 features unstructured meshes (UM) created with Abaqus/CAE as geometry description. Attila4MC package for creation of UM geometry from CAD model can be used for MCNP6 models. VVER-1000 fuel assembly model in UM geometry was created for TVSA-T.mod.2 fuel type. This TVSA fuel type is exclusively operated at Temelin NPP in Czechia. Creation of the model consists of deleting small assembly parts that can be neglected for transport calculations, choosing the size of tetrahedron mesh cells and verification of the model. Basic validation of the model was performed, initially for criticality calculations. In the future, the model will be used for criticality safety analyses, preparation of boundary conditions for diffusion codes and radiation shielding analyzes of spent fuel transport and storage facilities.

Název v anglickém jazyce

VVER-1000 fuel assembly model in CAD-based unstructured mesh for MCNP6

Popis výsledku anglicky

Geometry models for Monte Carlo transport codes have been using standard constructive solid geometry (CSG). The standard approach is using analytical equations for defining surfaces from which spatial cells are constructed. Both union and intersection operators are available, therefore, arbitrary 3-D geometry can be modeled with CSG. However, this approach can be quite time consuming and possibly error prone for complex models. Monte Carlo transport codes are continuously developed, one of the paths is using CAD-based mesh geometry. MCNP6 features unstructured meshes (UM) created with Abaqus/CAE as geometry description. Attila4MC package for creation of UM geometry from CAD model can be used for MCNP6 models. VVER-1000 fuel assembly model in UM geometry was created for TVSA-T.mod.2 fuel type. This TVSA fuel type is exclusively operated at Temelin NPP in Czechia. Creation of the model consists of deleting small assembly parts that can be neglected for transport calculations, choosing the size of tetrahedron mesh cells and verification of the model. Basic validation of the model was performed, initially for criticality calculations. In the future, the model will be used for criticality safety analyses, preparation of boundary conditions for diffusion codes and radiation shielding analyzes of spent fuel transport and storage facilities.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

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

Projekt

<a href="/cs/project/TE01020455" target="_blank" >TE01020455: Centrum pokročilých jaderných technologií (CANUT)</a><br>

Návaznosti

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

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název statě ve sborníku

Proceedings of the twenty-eight Symposium of AER

ISBN

978-963-7351-30-3

ISSN

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e-ISSN

neuvedeno

Počet stran výsledku

5

Strana od-do

261-265

Název nakladatele

Kiadja az MTA Energiatodomanyi Kutatokozpont

Místo vydání

Budapest

Místo konání akce

Olomouc, Czech Republic

Datum konání akce

8. 10. 2018

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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