Determination of the equivalent thermal conductivity of complex material systems with large-scale heterogeneities

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F14%3A00219970" target="_blank" >RIV/68407700:21110/14:00219970 - isvavai.cz</a>
Result on the web
<a href="http://www.elsevier.com/locate/ijts" target="_blank" >http://www.elsevier.com/locate/ijts</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.ijthermalsci.2014.07.020" target="_blank" >10.1016/j.ijthermalsci.2014.07.020</a>

Result language
angličtina
Original language name
Determination of the equivalent thermal conductivity of complex material systems with large-scale heterogeneities
Original language description
A method for determination of the equivalent thermal conductivity of heterogeneous systems with large representative elementary volumes is proposed. The laboratory experiment is based on the guarded hot plate principle but the heat transfer in the designed setup is generally 3D. Therefore, 3D computational modeling is applied for the analysis of heat transport in the system. The measuring procedure begins with the calibration which is performed using a material of the known thermal conductivity and typice specimen dimensions. Then, the experiment is carried out with the investigated specimen and the steady-state values of temperatures and heat fluxes in the characteristic positions are measured. The equivalent thermal conductivity is determined in an iterative procedure, utilizing the results of the laboratory experiment as input data of the computational model. The application of the propřed method is illustrated on an example of two types of advanced hollow clay bricks. The uncertain
Czech name
—
Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
JN - Civil engineering
OECD FORD branch
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Project
<a href="/en/project/GBP105%2F12%2FG059" target="_blank" >GBP105/12/G059: Cumulative time dependent processes in building materials and structures</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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