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Effective thermal conductivity of composites
International Journal of Heat and Mass Transfer, 2014Abstract The paper employs a theoretical model to evaluate the thermal conductivity of composites under two thermal assumptions which allow to solve the heat conduction equation. The composite is made of a ceramic-silica matrix and a fiber reinforcement. Three different materials are investigated as reinforcement, i.e. asbestos, steel and copper. The
GORI, FABIO, CORASANITI, SANDRA
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Effective thermal conductivity of nanofluids: the effects of microstructure
Journal of Physics D: Applied Physics, 2010We examine numerically the effects of particle–fluid thermal conductivity ratio, particle volume fraction, particle size distribution and particle aggregation on macroscale thermal properties for seven kinds of two-dimensional nanofluids. The results show that the radius of gyration and the non-dimensional particle–fluid interfacial area are two ...
Fan, J, Wang, L
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Effective Thermal Conductivity of Compressed Woods
Heat Transfer: Volume 3, 2000Abstract The total amount of lumbers consumed in Japan during a year, reaches to 1.1 billion cubic meter. However, 75 percent of them are imported. The resource of same 1.1 billion cubic meters is growing up every year in the domestic forest. This is due to the price difference between the domestic and imported lumbers.
Yutaka Asako +3 more
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Effect of strain on the thermal conductivity of solids
The Journal of Chemical Physics, 2006We present a systematic study of the effect of strain (equivalent to uniform pressure) on the thermal conductivity of an insulating solid. Following a theoretical analysis that uncovers the dependence of the thermal conductivity on temperature and strain, we present classical molecular dynamics calculations of the thermal conductivity. We find that the
Bhowmick, Somnath, Shenoy, Vijay B
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The effective thermal conductivity of a suspension
Journal of Applied Mathematics and Mechanics, 1984The effective thermal conductivity of an inhomogeneous suspension is considered for the case of low and moderate volume densities of randomly distributed spherical particles. A mathematical apparatus of convolutions of the \(\Lambda\)-functions is developed enabling closed formulas to be derived for the dipole moment of a particle in the system.
Golovin, A. M., Chizhov, V. E.
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Effective Thermal Conductivity and Thermal Contact Conductance of Graphite Fiber Composites
Journal of Thermophysics and Heat Transfer, 2001The transverse and longitudinal effective thermal conductivity and contact conductance of discontinuous and misoriented graphite fiber-reinforced composites has been studied over a range of temperatures (20-200°C) and pressures (172-1720 kPa). Three different fiber types (DKE X, DKA X, and K22XX) and three fiber volume fractions (55, 65, and 75%) in a ...
S. R. Mirmira +2 more
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Impact of thermal coupling effects on the effective thermal conductivity of aerogels
Journal of Sol-Gel Science and Technology, 2017Nanoporous aerogels are excellent thermal insulation materials with thermal conductivities down to about 0.012 W m−1 K−1 at ambient conditions. So far, it was assumed that the total thermal conductivity of aerogels can be described by a simple superposition of the different individual heat transport contributions.
Katrin Swimm +3 more
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Effect of Cracks on Thermal Conductivity
Journal of Composite Materials, 1978Expressions are derived for the effect of penny-shaped cracks of various orientations on the thermal conductivity of solid materials.
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Effect of thermal treatment on the effective thermal conductivity of YPSZ coatings
Surface and Coatings Technology, 2010Abstract Thermally sprayed coatings present effective properties strongly different from those of the primary bulk material. In particular, the actual thermal conductivity of Yttria Partially Stabilized Zirconia (YPSZ) coatings is typically twice lower than the thermal conductivity of dense YPSZ.
Bolot, Rodolphe +4 more
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