Air Ingress Process Simulations in CFD

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F11%3A00187817" target="_blank" >RIV/68407700:21220/11:00187817 - isvavai.cz</a>

Result on the web

<a href="http://www.enygf.eu/download/01/01_16_Gregor_paper.pdf" target="_blank" >http://www.enygf.eu/download/01/01_16_Gregor_paper.pdf</a>

DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Air Ingress Process Simulations in CFD

Original language description

Two separate phases - isothermal molecular diffusion and non-isothermal diffusion with natural circulation - were simulated in CFD program Fluent. The CFD solver was exercised and the results were compared with experimental data. The influence of the size of computational mesh and length of time step of unsteady solver were studied. For the simulation of isothermal molecular diffusion the coarser mesh with about 9000 hexahedral cells was suitable. The length of time step of about 0,05s seems to be optimal. The non-isothermal diffusion and natural circulation simulations were performed and compared with the experimental data. The simulated onset time of the natural circulation was not quite in a good agreement with the experiment with deviation of 18%.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

JF - Nuclear energy

OECD FORD branch

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Project

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Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2011

Confidentiality

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

Article name in the collection

ENYGF 2011 - Extended Abstracts

ISBN

978-80-02-02320-3

ISSN

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e-ISSN

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Number of pages

1

Pages from-to

50

Publisher name

Czech Nuclear Society - Czech Young Generation

Place of publication

Praha

Event location

Praha

Event date

May 17, 2011

Type of event by nationality

EUR - Evropská akce

UT code for WoS article

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