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Positional ordering of a two-dimensional fluid of hard disks is examined in such narrow tubes where only the nearest-neighbor interactions take place. Using the exact transfer-matrix method the transverse and longitudinal pressure…

统计力学 · 物理学 2015-05-30 S. Varga , G. Balló , P. Gurin

In order to improve the frequency dispersion effects of irrotational shallow water models in coastal oceanography, several full dispersion versions of classical models were formally derived in the literature. The idea, coming from G.…

偏微分方程分析 · 数学 2020-04-21 Louis Emerald

In this paper we introduce the concept of Direct Statistical Simulation (DSS) for astrophysical flows. This technique may be appropriate for problems in astrophysical fluids where the instantaneous dynamics of the flows are of secondary…

太阳与恒星天体物理 · 物理学 2011-01-17 S. M. Tobias , K. Dagon , J. B. Marston

The dynamics of a viscous accretion disc subject to a slowly varying warp of large amplitude is considered. Attention is restricted to discs in which self-gravitation is negligible, and to the generic case in which the resonant wave…

天体物理学 · 物理学 2009-10-31 G. I. Ogilvie

We study the flow harmonic distribution in deformed nuclei. To do this, we use the standard Gram-Charlier method to find the higher-order correction to the well-known Bessel-Gaussian distribution. We find that, apart from the necessity of…

核理论 · 物理学 2023-01-20 Hadi Mehrabpour , S. M. A. Tabatabaee

This paper describes the results of our theoretical and numerical studies of hydrodynamic interactions in a suspension of spherical particles confined between two parallel planar walls, under creeping-flow conditions. We propose a novel…

软凝聚态物质 · 物理学 2009-11-11 S. Bhattacharya , J. Blawzdziewicz , E. Wajnryb

Classical density-functional theory provides an efficient alternative to molecular dynamics simulations for understanding the equilibrium properties of inhomogeneous fluids. However, application of density-functional theory to multi-site…

计算物理 · 物理学 2014-02-14 Ravishankar Sundararaman , T. A. Arias

A formula for the tidal dissipation rate in a spherical body is derived from first principles, to correct some mathematical inaccuracies found in the literature. The development is combined with the Darwin-Kaula formalism for tides. Our…

地球与行星天体物理 · 物理学 2015-12-22 Michael Efroimsky , Valeri V. Makarov

Robust empirical constitutive laws for granular materials in air or in a viscous fluid have been expressed in terms of timescales based on the dynamics of a single particle. However, some behaviours such as viscosity bifurcation or shear…

软凝聚态物质 · 物理学 2015-05-13 Pierre Rognon , Cyprien Gay

Hard-sphere fluids confined between parallel plates a distance $D$ apart are studied for a wide range of packing fractions, including also the onset of crystallization, applying Monte Carlo simulation techniques and density functional…

We introduce a novel discretization technique for both elliptic and parabolic fractional diffusion problems based on double exponential quadrature formulas and the Riesz-Dunford functional calculus. Compared to related schemes, the new…

数值分析 · 数学 2020-12-11 Alexander Rieder

We present new method for studying the equilibrium properties of interacting fluids in an arbitrary external filed. The method is valid in any dimension and it yields an exact results in one dimension. Using this approach, we derive a…

软凝聚态物质 · 物理学 2017-02-17 Benaoumeur Bakhti

We derive an exact, analytic expression for the fourth virial coefficient of a system of polydisperse spheres under the constraint that the smallest sphere has a radius smaller than a given function of the radii of the three remaining…

软凝聚态物质 · 物理学 2009-10-31 Ronald Blaak

Diffusion within porous media, such as biological tissues, exhibits departures from conventional Fick's laws, which could result in space-fractional diffusion. The paper considers a reaction-diffusion system with two spatial compartments --…

综合数学 · 数学 2025-11-12 Dimiter Prodanov

We use the extension of scaled particle theory (ESPT) presented in the accompanying paper [Stillinger et al. J. Chem. Phys. xxx, xxx (2007)] to calculate numerically pair correlation function of the hard sphere fluid over the density range…

统计力学 · 物理学 2009-11-11 Swaroop Chatterjee , Pablo G. Debenedetti , Frank H. Stillinger

Impact of single particle onto a rigid substrate leads to its deformation and fragmentation. The flow associated with the particle spreading on a solid substrate after impact is extremely complicated. In this theoretical study a simplified…

流体动力学 · 物理学 2021-12-20 Ilia V. Roisman

Since early publications in the late 1980s and early 1990s, the finite volume method has been shown suitable for solid mechanics analyses. At present, there are several flavours of the method, which can be classified in a variety of ways,…

数值分析 · 数学 2021-05-06 Philip Cardiff , Ismet Demirdžić

This is an idiosyncratic survey of statistical fluid mechanics centering on the Hopf functional differential equation. Using the Burgers equation for illustration we review several functional integration approaches to theory of turbulence.…

流体动力学 · 物理学 2022-02-16 Koji Ohkitani

The problem of (non)random distribution of points on the sphere is investigated. Published procedures for obtaining preferred direction and preferred plane for points on the sphere (in the sky) are discussed. It is shown that the published…

天体物理学 · 物理学 2016-08-30 Jozef Klacka

The chemical potentials of multicomponent fluids are derived in terms of the pair correlation functions for arbitrary number of components, interaction potentials, and dimensionality. The formally exact result is particularized to…

统计力学 · 物理学 2013-05-31 Andrés Santos , René D. Rohrmann
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