The influence of an electric field on the viscosity of mixtures of polar gases with argon and helium has been measured using a capillary bridge. The relative change of the viscosity coefficient r]3 has been obtained in this way. A theory of the effect is sketched along similar lines to those fo l lowed by Tip f o r the magnetic case. The half value of the field is shown experimentally to be lin...

Liquids realize a highly complex state of matter in which strong competing kinetic and interaction effects come to life. As such, liquids are more challenging understand than either gases or solids generally. In weakly interacting gases, the dominate. By contrast, low temperature typically feature far smaller fluctuations about their ground state. Notwithstanding complexity, with exception quan...

This paper is devoted to the transport process of momentum, the viscosity. We outline the historical development of hydrodynamics, the branch of physics in which the shear and bulk viscosities are expressed. We show the transition between the mechanical philosophy claiming that the conservation of energy is coupled to cyclic, reversible dynamics, and the birth of a new science, thermodynamics, ...

A new reference-quality correlation for the viscosity of methanol is presented that is valid over the entire fluid region, including vapor, liquid, and metastable phases. To describe the zero-density viscosity with kinetic theory for polar gases, a new expression for the collision integral of the Stockmayer potential is introduced. The initial density dependence is based on the Rainwater–Friend...

Spontaneous Rayleigh-Brillouin scattering experiments in air, N2, and O2 have been performed for a wide range of temperatures and pressures at a wavelength of 403 nm and at a 90° scattering angle. Measurements of the Rayleigh-Brillouin spectral scattering profile were conducted at high signal-to-noise ratio for all three species, yielding high-quality spectra unambiguously showing the small dif...

Mold powders used in the continuous casting of steel contain the harmful CaF2 as a main substance developing toxic gases such as SiF4 and HF at elevated temperatures. In this study, three samples of I1, I2 and I3, which contained gypsum free Portland cement clinker with different percentages of Fe2O3 (5.68, 6.83, 8.02 ...

Recent X-ray diffraction data on molten noble and transition metals have been used to calculate effective interionic potentials by means of the Born-Green equation. The results on the noble metals are compared with the generalized pseudopotential calculations of Moriarty. In all cases the potentions were found to be insensitive to temperature and to have long-range oscillations. The results sug...

In this paper, we illustrate that the modern trends for viscosity prediction are moving away from empirically based methods to those that make use of a sound theoretical framework and are validated against primary experimental data. The Vesovic-Wakeham (VW) method is in the forefront of these developments. It is founded on the kinetic theory of hard-sphere fluids that is appropriately modified ...