Acceleration of uncertainty updating in the description of transport processes in heterogeneous materials

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F12%3A00194172" target="_blank" >RIV/68407700:21110/12:00194172 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.cam.2012.02.003" target="_blank" >http://dx.doi.org/10.1016/j.cam.2012.02.003</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.cam.2012.02.003" target="_blank" >10.1016/j.cam.2012.02.003</a>

Result language
angličtina
Original language name
Acceleration of uncertainty updating in the description of transport processes in heterogeneous materials
Original language description
The prediction of thermo-mechanical behaviour of heterogeneous materials such as heat and moisture transport is strongly influenced by the uncertainty in parameters. Such materials occur e.g., in historic buildings, and the durability assessment of thesetherefore needs a reliable and probabilistic simulation of transport processes, which is related to the suitable identification of material parameters. In order to include expert knowledge as well as experimental results, one can employ an updating procedure such as Bayesian inference. The classical probabilistic setting of the identification process in Bayes' form requires the solution of a stochastic forward problem via computationally expensive sampling techniques, which makes the method almost impractical. In this paper novel stochastic computational techniques such as the stochastic Galerkin method are applied in order to accelerate the updating procedure. The idea is to replace the computationally expensive forward simulation via
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
JM - Structural engineering
OECD FORD branch
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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
2012
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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