International Journal of Thermophysics

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Influence of Spacer Systems on Heat Transfer in Evacuated Glazing
International Journal of Thermophysics - - 2009
K. Swimm, H. Weinläder, H.-P. Ebert
One attractive possibility to essentially improve the insulation properties of glazing is to evacuate the space between the glass panes. This eliminates heat transport due to convection between the glass panes and suppresses the thermal conductivity of the remaining low pressure filling gas atmosphere. The glass panes can be prevented from collapsing by using a matrix of spacers. These spacers, ho...... hiện toàn bộ
Crystallization and fibril formation in polymers
International Journal of Thermophysics - Tập 11 - Trang 225-237 - 1990
E. J. Clark, J. D. Hoffman
Solutions of crystallizable polymers subjected to orientation crystallize in a fibrillar morphology if the polymer is solidified rapidly. The central core of the polymer fibers consists of thin, extended chain crystallites interspersed with disordered regions. The extended chain crystals are small fibrils having diameters generally less than a few hundred angstroms, while the lengths are usually n...... hiện toàn bộ
Enthalpy and Heat Capacity of Cs–Pb Alloys in Solid and Liquid States
International Journal of Thermophysics - - 2024
A. R. Khairulin, С. В. Станкус
Microsecond Laser Polarimetry for Emissivity Measurements on Liquid Metals at High Temperatures—Application to Tantalum
International Journal of Thermophysics - Tập 23 Số 5 - Trang 1281-1291 - 2002
Pottlacher, G., Seifter, A.
The aim of this work was to determine accurate and reliable thermophysical properties of liquid tantalum from melting up to temperatures of 5000 K. Temperature measurements on pulse-heated liquid metal samples reported by different authors have always been performed under the assumption of a constant emissivity over the whole liquid range because of the lack of data for liquid metals. The uncertai...... hiện toàn bộ
Toward a liquid-state theory with accurate critical-region behavior
International Journal of Thermophysics - Tập 6 - Trang 561-571 - 1985
J. S. Høye, G. Stell
A scaling-theory approach that yields the scaled thermodynamics in the critical region as the solution of an ordinary differential equation is given, along with a power-series “isocline” representation of the solution yielding a polynomial fit of a high accuracy. A means of extending the approach to the whole liquid-state region through a self-consistent integral equation for the radial distributi...... hiện toàn bộ
Heat Capacity Measurement of Oxygen-Dissolved V–Ti Alloys1
International Journal of Thermophysics - Tập 21 - Trang 563-570 - 2000
Y. Arita, T. Matsui, T. Suzuki
The heat capacities of (V1−y Ti y ) O x alloys (x=0.13 to 0.18, y=0.06 to 0.23) were measured in the temperature range from 380 to 900μK with a differential scanning calorimeter. A λ-type peak corresponding to the order–disorder phase transition was observed in the heat capacity curves of each (V1−y Ti y ...... hiện toàn bộ
The Viscosity Surfaces of Propane in the Form of Multilayer Feed Forward Neural Networks
International Journal of Thermophysics - Tập 24 - Trang 1241-1263 - 2003
G. Scalabrin, G. Cristofoli
The present work focuses on the development of a viscosity equation η=η(ρ,T) for propane through a multilayer feedforward neural network (MLFN) technique. Having been successfully applied to a variety of fluids so far, the proposed technique can be regarded as a general approach to viscosity modeling. The MLFN viscosity equation has been based on the available experimental data for propane: valida...... hiện toàn bộ
Quantitative Carrier Density Wave Imaging in Silicon Solar Cells Using Photocarrier Radiometry and Lock-in Carrierography
International Journal of Thermophysics - Tập 37 - Trang 1-9 - 2016
Q. M. Sun, A. Melnikov, A. Mandelis
InGaAs camera-based low-frequency homodyne and high-frequency heterodyne lock-in carrierographies (LIC) are introduced for spatially resolved imaging of optoelectronic properties of Si solar cells. Based on the full theory of solar cell photocarrier radiometry (PCR), several simplification steps were performed aiming at the open circuit case, and a concise expression of the base minority carrier d...... hiện toàn bộ
Effect of Surface Elastic on the Response of Microcantilevers Under Photothermal Excitation
International Journal of Thermophysics - Tập 36 - Trang 3106-3115 - 2015
Yaqin Song, Jintao Bai, Yongfeng Kang
Surface elasticity often plays a significant role in the physical properties of micro and nanosized materials and structures. In this paper the effect of surface elastic modulus on the bending of a microcantilever, which was excited with a frequency-modulated laser, is studied by incorporating the effect of the surface elastic modulus into the equation of motion. The deflection of microcantilever ...... hiện toàn bộ
Surface Oscillations of an Electromagnetically Levitated Droplet
International Journal of Thermophysics - - 2005
S. R. Berry, R. W. Hyers, L. M. Racz, B. Abedian
The natural oscillation frequency of freely suspended liquid droplets can be related to the surface tension of the material, and the decay of oscillations to the liquid viscosity. However, the fluid flow inside the droplet must be laminar to measure viscosity with existing correlations; otherwise the damping of the oscillations is dominated by turbulent dissipation. Because no experimental method ...... hiện toàn bộ
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