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Adaptive hp-FEM with dynamical meshes for transient heat and moisture transfer problems
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SYSNO ASEP 0347689 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Adaptive hp-FEM with dynamical meshes for transient heat and moisture transfer problems Author(s) Šolín, Pavel (UT-L) RID
Dubcová, Lenka (UT-L)
Kruis, J. (CZ)Source Title Journal of Computational and Applied Mathematics. - : Elsevier - ISSN 0377-0427
Roč. 233, č. 12 (2010), s. 3103-3112Number of pages 10 s. Language eng - English Country NL - Netherlands Keywords multiphysics problems ; heat and moisture transfer ; higher-order methods Subject RIV JA - Electronics ; Optoelectronics, Electrical Engineering R&D Projects IAA100760702 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) CEZ AV0Z20570509 - UE-C, UT-L (2005-2011) UT WOS 000275965800005 DOI 10.1016/j.cam.2009.07.025 Annotation We are concerned with the time-dependent multiphysics problem of heat and moisture transfer in the context of civil engineering applications. The problem is challenging due to its multiscale nature (temperature usually propagates orders of magnitude faster than moisture), different characters of the two fields (moisture exhibits boundary layers which are not present in the temperature field), extremely long integration times (30 years or more), and lack of viable error control mechanisms. In order to solve the problem efficiently, we employ a novel multimesh adaptive higherorder finite element method (hp-FEM) based on dynamical meshes and adaptive time step control. We investigate the possibility to approximate the temperature and humidity fields on individual dynamical meshes equipped with mutually independent adaptivity mechanisms. Numerical examples related to a realistic nuclear reactor vessel simulation are presented. Workplace Institute of Thermomechanics Contact Marie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154 ; Jana Lahovská, jaja@it.cas.cz, Tel.: 266 053 823 Year of Publishing 2011
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