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Comparison of multimesh hp-FEM to interpolation and projection methods for spatial coupling of thermal and neutron diffusion calculations
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SYSNO ASEP 0363238 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Comparison of multimesh hp-FEM to interpolation and projection methods for spatial coupling of thermal and neutron diffusion calculations Tvůrce(i) Dubcová, Lenka (UT-L)
Šolín, Pavel (UT-L) RID
Hansen, G. (US)
Park, H. (US)Zdroj.dok. Journal of Computational Physics. - : Elsevier - ISSN 0021-9991
Roč. 4, č. 230 (2011), s. 1182-1197Poč.str. 16 s. Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova reactormultiphysics simulation ; coupled diffusion ; multiphysics error Vědní obor RIV JA - Elektronika a optoelektronika, elektrotechnika CEP IAA100760702 GA AV ČR - Akademie věd CEZ AV0Z20570509 - UE-C, UT-L (2005-2011) UT WOS 000286782300019 DOI 10.1016/j.jcp.2010.10.034 Anotace Multiphysics solution challenges are legion within the field of nuclear reactor design and analysis. One major issue concerns the coupling between heat and neutron flow (neutronics) within the reactor assembly. These phenomena are usually very tightly interdependent, as large amounts of heat are quickly produced with an increase in fission events within the fuel, which raises the temperature that affects the neutron cross section of the fuel. Furthermore, there typically is a large diversity of time and spatial scales between mathematical models of heat and neutronics. Indeed, the different spatial resolution requirements often lead to the use of very different meshes for the two phenomena. As the equations are coupled, one must take care in exchanging solution data between them, or significant error can be introduced into the coupled problem. We propose a novel approach to the discretization of the coupled problem on different meshes based on an adaptive multimesh higher-order finite element method (hp-FEM), and compare it to popular interpolation and projection method. Pracoviště Ústav termomechaniky Kontakt Marie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154 ; Jana Lahovská, jaja@it.cas.cz, Tel.: 266 053 823 Rok sběru 2012 Elektronická adresa http://www.sciencedirect.com/science/article/pii/S0021999110005905
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