Results 141 to 150 of about 310,574 (194)

Heat conduction with a temperature-dependent thermal conductivity coefficient

Journal of engineering physics, 1970
A variational method is employed to solve stationary and nonstationary heat conduction problems when the thermal conductivity coefficient is temperature-dependent and the heat generation function of the medium is arbitrary.
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Seebeck coefficient and thermal conductivity in doped C60

Journal of Renewable and Sustainable Energy, 2009
Pressed bulk samples of C60 doped with P, Co, Al, and Bi have been investigated for their thermoelectric properties. These samples show extremely low thermal conductivity, typically in the range of 0.1–0.3W∕Km at room temperature. The Seebeck coefficients of Co, Al, and Bi doped C60 solids are in the tens of μV∕K; however, for P doped C60 samples, a ...
Wendong Wang, Zhenjun Wang, Jinke Tang, Shizhong Yang, Hua Jin, Guang-Lin Zhao, Qiang Li   +6 more
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The thermal conductivity coefficient of polyatomic molecules: benzene

Fluid Phase Equilibria, 1992
Abstract The thermal conductivity of a rigid benzene-like model fluid is evaluated using the nonequilibrium molecular dynamics algorithm of Evans, and Evans and Murad. The contribution to the conductivity from rotational degrees of freedom is shown to be significant and density dependent. These contributions are contrasted with those of a homonuclear
P. Ravi, S. Murad, H.J.M. Hanley, D.J. Evans   +3 more
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Thermal conductivity and heat transfer coefficient of concrete

Journal of Wuhan University of Technology-Mater. Sci. Ed., 2011
A very simple model for predicting thermal conductivity based on its definiensis was presented. The thermal conductivity obtained using the model provided a good coincidence to the investigations performed by other authors. The heat transfer coefficient was determined by inverse analysis using the temperature measurements. From experimental results, it
Lixia Guo, Lei Guo, Ling Zhong, Yueming Zhu   +3 more
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Identification of Thermal Conductivity Coefficient Using a Given Temperature Field

Computational Mathematics and Mathematical Physics, 2018
The authors consider the initial boundary problem for the two-dimensional heat equation; the boundary conditions are of Dirichlet type. The goal of the investigation is to find such an initially unknown thermal conductivity \(K(T)\) dependent on the temperature \(T\) that the deviation of the calculated temperature field from the given one will be ...
Albu, A. F., Zubov, V. I.
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Peltier coefficient and thermal conductance of a quantum point contact

Physical Review Letters, 1992
We report the observation of quantum size effects in the thermal conductance and Peltier coefficient of a quantum point contact. Our experimental method involves a novel usage of quantum point contacts as local electron gas thermometers.
, Molenkamp, , Gravier, , van Houten H, , Buijk, , Mabesoone, , Foxon   +5 more
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Connections between anisotropic tensors of thermal conductivity and thermal expansion coefficients

International Journal of Engineering Science, 2018
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Mazloum, Aref, Sevostianov, Igor
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Coefficients of Diffusion, Viscosity, and Thermal Conductivity of a Gas

American Journal of Physics, 1962
The coefficients of diffusion, viscosity, and thermal conductivity of a gas are derived in first approximation following the method of Maxwell and Chapman. The derivation differs from previous derivations primarily in the expression and evaluation of the various collision integrals.
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Thermal-conductivity coefficients of six liquid aromatic hydrocarbons

Journal of Engineering Physics, 1978
Using experimental λ andρ data, equations are developed for six aromatic hydrocarbons which describe λ within the limits of experimental accuracy over the temperature range 298–573°K at pressures up to 500 bar.
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Estimating the thermal-conductivity coefficients of multiphase materials

Journal of Applied Mechanics and Technical Physics, 1972
A mixture consisting of n homogeneous phases having certain properties is considered. The geometry of the phase domains is arbitrary and the mixture as a whole is considered to be statistically homogeneous but generally anisotropic. Ideal conditions of thermal contact (a continuous temperature and thermal flux) at the phase boundary are assumed.
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