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rdf:type
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Description
| - Nanofluids exhibit enhanced thermal conductivity with decreasing particle size, while nanocrystalline solids show a thermal conductivity reduction with decreasing grain size. Both phenomena can be modeled as being due to a boundary phase acting as a thermal bridge or barrier, respectively. In this paper a new phase mixture model is presented, based on a ?mixed average? of the upper and lower Wiener bounds. It is shown that in the case of alumina-water nanofluids our model is able to describe very well the experimentally measured data for nanofluids with 38, 25 and 13 nm alumina particles, when the solid-like boundary phase is assumed to possess ice-like thermal conductivity (2 W/mK) and a thickness of 1-5 nm. For nanocrystalline alumina (assuming a grain boundary with thickness 1 nm and a glass-like conductivity value of 1.1 W/mK), it is shown that significant grain size effects cannot be expected for grain sizes above 100 nm and a more than 10 % conductivity reduction requires grain sizes below 50 nm
- Nanofluids exhibit enhanced thermal conductivity with decreasing particle size, while nanocrystalline solids show a thermal conductivity reduction with decreasing grain size. Both phenomena can be modeled as being due to a boundary phase acting as a thermal bridge or barrier, respectively. In this paper a new phase mixture model is presented, based on a ?mixed average? of the upper and lower Wiener bounds. It is shown that in the case of alumina-water nanofluids our model is able to describe very well the experimentally measured data for nanofluids with 38, 25 and 13 nm alumina particles, when the solid-like boundary phase is assumed to possess ice-like thermal conductivity (2 W/mK) and a thickness of 1-5 nm. For nanocrystalline alumina (assuming a grain boundary with thickness 1 nm and a glass-like conductivity value of 1.1 W/mK), it is shown that significant grain size effects cannot be expected for grain sizes above 100 nm and a more than 10 % conductivity reduction requires grain sizes below 50 nm (en)
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Title
| - Phase Mixture Models for the Thermal Conductivity of Nanofluids and Nanocrystalline Solids
- Phase Mixture Models for the Thermal Conductivity of Nanofluids and Nanocrystalline Solids (en)
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skos:prefLabel
| - Phase Mixture Models for the Thermal Conductivity of Nanofluids and Nanocrystalline Solids
- Phase Mixture Models for the Thermal Conductivity of Nanofluids and Nanocrystalline Solids (en)
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skos:notation
| - RIV/60461373:22310/09:00021605!RIV10-MSM-22310___
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http://linked.open...avai/riv/aktivita
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http://linked.open...avai/riv/aktivity
| - P(IAA401250703), Z(MSM6046137302)
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http://linked.open...iv/cisloPeriodika
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http://linked.open...vai/riv/dodaniDat
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http://linked.open...aciTvurceVysledku
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http://linked.open.../riv/druhVysledku
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http://linked.open...iv/duvernostUdaju
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http://linked.open...titaPredkladatele
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http://linked.open...dnocenehoVysledku
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http://linked.open...ai/riv/idVysledku
| - RIV/60461373:22310/09:00021605
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http://linked.open...riv/jazykVysledku
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http://linked.open.../riv/klicovaSlova
| - Nanofluids; nanocrystalline solid materials; alumina; thermal conductivity; grain boundaries; phase mixture models; particle size; grain size; Wiener bounds; Hashin-Shtrikman bounds; Hamilton-Crosser model; Maxwell model. (en)
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http://linked.open.../riv/klicoveSlovo
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http://linked.open...odStatuVydavatele
| - US - Spojené státy americké
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http://linked.open...ontrolniKodProRIV
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http://linked.open...i/riv/nazevZdroje
| - AIP Conference Proceedings
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http://linked.open...in/vavai/riv/obor
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http://linked.open...ichTvurcuVysledku
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http://linked.open...cetTvurcuVysledku
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http://linked.open...vavai/riv/projekt
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http://linked.open...UplatneniVysledku
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http://linked.open...iv/tvurceVysledku
| - Gregorová, Eva
- Pabst, Willi
- Hostaša, Jan
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http://linked.open...ain/vavai/riv/wos
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http://linked.open...n/vavai/riv/zamer
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issn
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number of pages
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http://localhost/t...ganizacniJednotka
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is http://linked.open...avai/riv/vysledek
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