Computational Simulation of Transport Phenomena in Self-Heating Aluminosilicate Composites

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F18%3A00323710" target="_blank" >RIV/68407700:21110/18:00323710 - isvavai.cz</a>

Výsledek na webu

<a href="https://aip.scitation.org/doi/abs/10.1063/1.5079092" target="_blank" >https://aip.scitation.org/doi/abs/10.1063/1.5079092</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1063/1.5079092" target="_blank" >10.1063/1.5079092</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Computational Simulation of Transport Phenomena in Self-Heating Aluminosilicate Composites

Popis výsledku v původním jazyce

Self-heating ability of aluminosilicates influenced by an external electric source is in general negligible. It is due to the electrically non-conductive nature of such heterogeneous materials. However, the effective electrical conductivity of aluminosilicates can be significantly increased by addition of metal-based or carbon-based admixtures. Such enhancement can be subsequently utilized in self-heating applications, such as for preparation of pavements or parts of roads which are exposed to adverse weather conditions in winter seasons. In addition to necessary experimental measurements, it is important to determine self-heating ability of materials by means of theoretical modeling. In this paper, two-layer system of materials consisting of electrically conductive aluminosilicate (ECA) with embedded electrodes and protective layer made of concrete (C) was considered. Three FEM calculations were performed and results were mutually compared. In the first case, electrical conductivity was identical in all mesh points, whereas in the second and the third case different electrical conductivities according to the distribution of electrically conductive admixture in mesh points were used as input variables. It was observed that minimal and maximal temperature on ECA and C surface after 120 minutes of heating by 200 V power source is similar for all modeled cases.

Název v anglickém jazyce

Computational Simulation of Transport Phenomena in Self-Heating Aluminosilicate Composites

Popis výsledku anglicky

Self-heating ability of aluminosilicates influenced by an external electric source is in general negligible. It is due to the electrically non-conductive nature of such heterogeneous materials. However, the effective electrical conductivity of aluminosilicates can be significantly increased by addition of metal-based or carbon-based admixtures. Such enhancement can be subsequently utilized in self-heating applications, such as for preparation of pavements or parts of roads which are exposed to adverse weather conditions in winter seasons. In addition to necessary experimental measurements, it is important to determine self-heating ability of materials by means of theoretical modeling. In this paper, two-layer system of materials consisting of electrically conductive aluminosilicate (ECA) with embedded electrodes and protective layer made of concrete (C) was considered. Three FEM calculations were performed and results were mutually compared. In the first case, electrical conductivity was identical in all mesh points, whereas in the second and the third case different electrical conductivities according to the distribution of electrically conductive admixture in mesh points were used as input variables. It was observed that minimal and maximal temperature on ECA and C surface after 120 minutes of heating by 200 V power source is similar for all modeled cases.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20505 - Composites (including laminates, reinforced plastics, cermets, combined natural and synthetic fibre fabrics; filled composites)

Projekt

<a href="/cs/project/GA16-00567S" target="_blank" >GA16-00567S: Alkalicky aktivované aluminosilikátové kompozity se zvýšenou elektrickou vodivostí</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název statě ve sborníku

Proceedings of the International Conference of Computational Methods in Sciences and Engineering 2018 (ICCMSE-2018)

ISBN

978-0-7354-1766-3

ISSN

—

e-ISSN

—

Počet stran výsledku

5

Strana od-do

—

Název nakladatele

AIP Conference Proceedings

Místo vydání

New York

Místo konání akce

Thessaloniki

Datum konání akce

14. 3. 2018

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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