Results 1 to 10 of about 19,893 (259)
Some of the next articles are maybe not open access.
Physical Review Letters, 2005
The Ludwig-Soret effect or thermal diffusion, which refers to the separation of liquid mixtures in a temperature gradient, is governed by a nonlinear, partial differential equation in space and time. It is shown here that the solution to the nonlinear differential equation for a binary mixture predicts the existence of shock waves completely analogous ...
Sorasak, Danworaphong +3 more
openaire +2 more sources
The Ludwig-Soret effect or thermal diffusion, which refers to the separation of liquid mixtures in a temperature gradient, is governed by a nonlinear, partial differential equation in space and time. It is shown here that the solution to the nonlinear differential equation for a binary mixture predicts the existence of shock waves completely analogous ...
Sorasak, Danworaphong +3 more
openaire +2 more sources
Thermal Diffusivity Measurements of Thermographite
International Journal of Thermophysics, 2004This paper presents results of measurements of a graphite proposed to serve as a thermophysical property reference or standard reference material. The reported measurements contribute to a program launched in 1999 by Anter Corp. with the objective to provide a replacement for the NIST thermal property reference material RM AXM-5Q graphite whose ...
Maglic, KD, Milošević, Nenad D.
openaire +2 more sources
Thermal diffusion of Boussinesq solitons
Physical Review E, 2007We consider the problem of the soliton dynamics in the presence of an external noisy force for the Boussinesq type equations. A set of ordinary differential equations (ODEs) of the relevant coordinates of the system is derived. We show that for the improved Boussinesq (IBq) equation the set of ODEs has limiting cases leading to a set of ODEs which can ...
Edward, Arévalo, Franz G, Mertens
openaire +2 more sources
Thermal Characterization of Low Thermal Diffusivity Glasses
1992The photodeflection technique is a very effective method to measure thermal properties of solid materials. Depending on the material, the technique can be used in its collinear (probe through the transparent sample) or transverse configuration (probe traveling in the air: opaque sample).
BERTOLOTTI, Mario +5 more
openaire +3 more sources
The FJO thermal diffusion column theory and the thermal diffusion factor
Journal of Physics A: General Physics, 1971It is shown that by proper choice of a reference temperature in the theoretical expression for the separation factor for a thermal diffusion column, the separation factor may be made to depend on the potential model and the interaction parameters solely through the thermal diffusion factor, the other terms in the expression becoming independent of the ...
J M Saviron +3 more
openaire +1 more source
Mass and Thermal Diffusivity Algorithms
Annals of the New York Academy of Sciences, 2002Abstract: Mass and thermal diffusivity measurements conducted on Earth are prone to contamination by uncontrollable convective contributions to the overall transport. Previous studies of mass and thermal diffusivities conducted on spacecraft have demonstration the gain in precision, and lower absolute values, resulting from the reduced convective ...
R Michael, Banish +4 more
openaire +2 more sources
Diffusion and Thermal Diffusion in Ne–CO2
The Physics of Fluids, 1961Values of the thermal diffusion factor αT and the ordinary diffusion coefficient D for Ne–CO2 mixtures have been measured over a temperature range of about −78° to 350°C by using the radioactive tracer C14O2. The thermal diffusion factor exhibits an unusual negative temperature dependence similar to that for Ar–CO2 mixtures.
Stanley Weissman +2 more
openaire +1 more source
Thermal Conductivity and Thermal Diffusivity
1983Abstract This chapter presents basic principles and the theoretical results of heat transport in solids. Thermal conductivity and thermal diffusivity are the principal properties discussed. Discussions are also included on the effects of temperature, magnetic field, and metallurgical variations caused by composition, processing, and heat-
openaire +1 more source
Pseudo-Landau Thermal Diffusion
Physical Review LettersLandau quantization of two-dimensional free electrons and massless Dirac fermions plays a key role underlying many quantum phenomena in condensed matter physics. It usually requires the magnetic field, which arranges the charge carriers associated with the harmonic oscillation on a ladder of discrete Landau levels with a dissipationless edge state ...
Jun Guo +5 more
openaire +2 more sources