نتایج جستجو برای: compressibility of liquid

تعداد نتایج: 21183854  

Journal: :Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics 1993
Tejero Cuesta

We apply the differential formulation of the generalized effective liquid approximation to the study of hard-sphere and hard-disk freezing. We show that the thermodynamic properties of the solid phase are rather insensitive to the compressibility factor of the Quid phase used to map the solid onto the effective liquid. The solid-Quid coexistence data instead are quite dependent on the equation ...

Analytic expressions were derived for the compressibility factor and residual internal energy of the square-well plus Sutherland fluid. In this derivation, we used the second order Barker-Henderson perturbation theory based on the macroscopic compressibility approximation together with an analytical expression for radial distribution function of the reference hard sphere fluid. These properties...

Journal: :Physical review letters 2013
Xue-Feng Zhang Sebastian Eggert

We consider the extended hard-core Bose-Hubbard model on a kagome lattice with boundary conditions on two edges. We find that the sharp edges lift the degeneracy and freeze the system into a striped order at 1/3 and 2/3 filling for zero hopping. At small hopping strengths, holes spontaneously appear and separate into fractional charges which move to the edges of the system. This leads to a nove...

2010
Khalid M. El-Say Ahmed M. Samy Mohamed I. Fetouh

The aim of our study was to improve the availability of Rofecoxib a practically insoluble non-steroidal anti-inflammatory drug, as a model drug by using liquisolid technique. The effect of powder substrate composition on the flowability and compressibility of liquisolid compacts were evaluated. Specifically, several liquisolid formulations, containing 25-mg Rofecoxib, which containing different...

Journal: :The Journal of chemical physics 2017
Lorenzo Rovigatti Valentino Bianco José Maria Tavares Francesco Sciortino

A re-entrant gas-liquid spinodal was proposed as a possible explanation of the apparent divergence of the compressibility and specific heat off supercooling water. Such a counter-intuitive possibility, e.g., a liquid that becomes unstable to gas-like fluctuations on cooling at positive pressure, has never been observed, neither in real substances nor in off-lattice simulations. More recently, s...

2005
Alexandre Caboussat Marco Picasso Jacques Rappaz

A model for the simulation of complex three-dimensional free surface flows is presented. An incompressible liquid interacts with a compressible gas. The incompressible Navier-Stokes equations are solved only in the liquid domain while the dynamical effects in the gas are neglected. The compressibility effects of the gas are taken into account by computing its pressure. Surface tension effects a...

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2001
A Scala M R Sadr-Lahijany N Giovambattista S V Buldyrev H E Stanley

We use molecular-dynamics simulations in two dimensions to investigate the possibility that a core-softened potential can reproduce static and dynamic anomalies found experimentally in liquid water: (i) the increase in specific volume upon cooling, (ii) the increase in isothermal compressibility upon cooling, and (iii) the increase in the diffusion coefficient with pressure. We relate these ano...

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