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The problem of surface effects at a fluid/force field boundary is investigated. A classical simple fluid with a locally introduced field simulating a solid is considered. For the case of a hard-core field, rigid, exponential, realistic, and…

统计力学 · 物理学 2011-12-08 V. M. Zaskulnikov

The direct correlation function of a fluid mixture of parallel hard cubes is obtained by using Rosenfeld's fundamental measure approximation. This approximation is thermodynamically consistent (compressibility and virial equations of state…

凝聚态物理 · 物理学 2009-10-28 Jose A. Cuesta

The authors present a study of the non equilibrium statistical properties of a one dimensional hard-rod fluid dissipating energy via inelastic collisions and subject to the action of a Gaussian heat bath, simulating an external driving…

材料科学 · 物理学 2009-11-13 Umberto Marini-Bettolo-Marconi , Pedro Tarazona , Fabio Cecconi

The gauge invariant electromagnetic Wigner equation is taken as the basis for a fluid-like system describing quantum plasmas, derived from the moments of the gauge invariant Wigner function. The use of the standard, gauge dependent Wigner…

量子物理 · 物理学 2015-05-14 F. Haas , J. Zamanian , M. Marklund , G. Brodin

Classical density-functional theory is the most direct approach to equilibrium structures and free energies of inhomogeneous liquids, but requires the construction of an approximate free-energy functional for each liquid of interest. We…

软凝聚态物质 · 物理学 2014-10-10 Ravishankar Sundararaman , Kendra Letchworth-Weaver , T A Arias

We consider viscous, heat conducting mixtures of molecularly miscible chemical species forming a fluid in which the constituents can undergo chemical reactions. Assuming a common temperature for all components, we derive a closed system of…

流体动力学 · 物理学 2016-04-01 Dieter Bothe , Wolfgang Dreyer

We investigate the shallow flow of viscous fluid into and out of a channel whose gap width increases as a power-law ($x^n$), where $x$ is the downstream axis. The fluid flows slowly, while injected at a rate in the form of $t^\alpha$, where…

流体动力学 · 物理学 2023-12-13 M-S. Liu , H. E. Huppert

Inhomogeneity of ion correlation widely exists in many physicochemical, soft matter, and biological systems. Here, we apply the modified Gaussian renormalized fluctuation theory to study the classic example of the vapor-liquid interface of…

软凝聚态物质 · 物理学 2022-11-22 Nikhil R. Agrawal , Rui Wang

We use supervised machine learning together with the concepts of classical density functional theory to investigate the effects of interparticle attraction on the pair structure, thermodynamics, bulk liquid-gas coexistence, and associated…

软凝聚态物质 · 物理学 2025-01-29 Florian Sammüller , Matthias Schmidt , Robert Evans

A generalized version of Groeneveld's convergence criterion for the virial expansion and generating functionals for weighted $2$-connected graphs is proven. The criterion works for inhomogeneous systems and yields bounds for the density…

数学物理 · 物理学 2021-02-23 Sabine Jansen

We study the structural and thermodynamic properties of a model of point particles interacting by means of a Gaussian pair potential first introduced by Stillinger [Stillinger F H 1976 J. Chem. Phys. 65, 3968]. By employing integral…

软凝聚态物质 · 物理学 2009-10-31 A. Lang , C. N. Likos , M. Watzlawek , H. Lowen

The contact values $g(\sigma,\sigma')$ of the radial distribution functions of a fluid of (additive) hard spheres with a given size distribution $f(\sigma)$ are considered. A ``universality'' assumption is introduced, according to which, at…

统计力学 · 物理学 2007-05-23 A. Santos , S. B. Yuste , M. Lopez de Haro

We study a thermodynamically consistent diffuse-interface model that describes the motion of two macroscopically immiscible, incompressible, and viscous Newtonian fluids with unmatched densities. This model is compatible with continuum…

偏微分方程分析 · 数学 2026-04-30 Mingwen Fei , Xiang Fei , Yadong Liu , Hao Wu

Different computational techniques in combination with molecular dynamics computer simulation are used to to determine the wall-liquid and the wall-crystal interfacial free energies of a modified Lennard-Jones (LJ) system in contact with a…

统计力学 · 物理学 2015-06-16 Ronald Benjamin , Jürgen Horbach

We devise an iterative scheme for numerically calculating dynamical two-point correlation functions in integrable many-body systems, in the Eulerian scaling limit. Expressions for these were originally derived in Ref. [1] by combining the…

统计力学 · 物理学 2021-01-01 Frederik S. Møller , Gabriele Perfetto , Benjamin Doyon , Jörg Schmiedmayer

A density-functional theory is established for inhomogeneous superfluids at finite temperature, subject to time-dependent external fields in isothermal conditions. After outlining parallelisms between a neutral superfluid and a charged…

统计力学 · 物理学 2009-10-31 M. L. Chiofalo , M. P. Tosi

A self-consistent theory of bulk electrolytes incorporating electrostatic and hard-core interactions on an equal level is applied to the two-dimensional Coulomb liquid with finite ion size. The ionic pair distributions, the structure…

软凝聚态物质 · 物理学 2026-04-10 Sahin Buyukdagli

Assuming conformally flat metric we obtain inhomogeneous solutions of Einstein equations with the energy-momentum of a viscous fluid. We suggest that the viscous solution can be applied as a model of an expanding inhomogeneous dark energy.

广义相对论与量子宇宙学 · 物理学 2020-03-31 Z. Haba

We consider an abstract functional-differential equation derived from the pressure-less Euler system with variable coefficients that includes several systems of partial differential equations arising in the fluid mechanics. Using the method…

偏微分方程分析 · 数学 2015-03-16 Eduard Feireisl

Ideal fluid dynamics is studied as a relativistic field theory with particular importance on its hamiltonian structure. The Schwinger condition, whose integrated version yields the stress tensor conservation, is explicitly verified both in…

高能物理 - 理论 · 物理学 2015-06-11 Rabin Banerjee , Subir Ghosh , Arpan Krishna Mitra