23,407 research outputs found
Mesoscopic Methods in Engineering and Science
(First paragraph) Matter, conceptually classified into fluids and solids, can be completely described by the microscopic physics of its constituent atoms or molecules. However, for most engineering applications a macroscopic or continuum description has usually been sufficient, because of the large disparity between the spatial and temporal scales relevant to these applications and the scales of the underlying molecular dynamics. In this case, the microscopic physics merely determines material properties such as the viscosity of a fluid or the elastic constants of a solid. These material properties cannot be derived within the macroscopic framework, but the qualitative nature of the macroscopic dynamics is usually insensitive to the details of the underlying microscopic interactions
Mesoscopic Methods in Engineering and Science
(First paragraph) Matter, conceptually classified into fluids and solids, can be completely described by the microscopic physics of its constituent atoms or molecules. However, for most engineering applications a macroscopic or continuum description has usually been sufficient, because of the large disparity between the spatial and temporal scales relevant to these applications and the scales of the underlying molecular dynamics. In this case, the microscopic physics merely determines material properties such as the viscosity of a fluid or the elastic constants of a solid. These material properties cannot be derived within the macroscopic framework, but the qualitative nature of the macroscopic dynamics is usually insensitive to the details of the underlying microscopic interactions
Mesoscopic Methods in Engineering and Science
Matter, conceptually classified into fluids and solids, can be completely described by the microscopic physics of its constituent atoms or molecules. However, for most engineering applications a macroscopic or continuum description has usually been sufficient, because of the large disparity between the spatial and temporal scales relevant to these applications and the scales of the underlying molecular dynamics. In this case, the microscopic physics merely determines material properties such as the viscosity of a fluid or the elastic constants of a solid. These material properties cannot be derived within the macroscopic framework, but the qualitative nature of the macroscopic dynamics is usually insensitive to the details of the underlying microscopic interactions
Mesoscopic Methods in Engineering and Science
(First paragraph) Matter, conceptually classified into fluids and solids, can be completely described by the microscopic physics of its constituent atoms or molecules. However, for most engineering applications a macroscopic or continuum description has usually been sufficient, because of the large disparity between the spatial and temporal scales relevant to these applications and the scales of the underlying molecular dynamics. In this case, the microscopic physics merely determines material properties such as the viscosity of a fluid or the elastic constants of a solid. These material properties cannot be derived within the macroscopic framework, but the qualitative nature of the macroscopic dynamics is usually insensitive to the details of the underlying microscopic interactions
Dedication to Pierre Lallemand on the Occasion of His Retirement
The fourth international conference for mesoscopic methods in engineering and science (http://www.icmmes. org), held in Munich, Germany, 16–20 July 2007, was closed with a celebration honouring Dr Pierre Lallemand on the occasion of his retirement from the Centre National de la Recherche Scientifique (CNRS) after more than 40 years of service
Computational Steering of Cluster Formation in Brownian Suspensions
We simulate cluster formation of model colloidal particles interacting via
DLVO (Derjaguin, Landau, Vervey, Overbeek) potentials. The interaction
potentials can be related to experimental conditions, defined by the pH-value,
the salt concentration and the volume fraction of solid particles suspended in
water. The system shows different structural properties for different
conditions, including cluster formation, a glass-like repulsive structure, or a
liquid suspension. Since many simulations are needed to explore the whole
parameter space, when investigating the properties of the suspension depending
on the experimental conditions, we have developed a steering approach to
control a running simulation and to detect interesting transitions from one
region in the configuration space to another. The advantages of the steering
approach and the restrictions of its applicability due to physical constraints
are illustrated by several example cases.Comment: 9 pages, 4 figures, submitted to Proceedings of the Fourth
International Conference on Mesoscopic Methods in Engineering and Science
(ICMMES) 2007 (Munich, Germany), revised version, 2 figures exchanged, some
parts rephrase
From the Boltzmann Equation to the Euler Equations in the Presence of Boundaries
The fluid dynamic limit of the Boltzmann equation leading to the Euler
equations for an incompressible fluid with constant density in the presence of
material boundaries shares some important features with the better known
inviscid limit of the Navier-Stokes equations. The present paper slightly
extends recent results from [C. Bardos, F. Golse, L. Paillard, Comm. Math.
Sci., 10 (2012), 159--190] to the case of boundary conditions for the Boltzmann
equation more general than Maxwell's accomodation condition.Comment: 22 pages, work presented at the Eighth International Conference for
Mesoscopic Methods in Engineering and Science (ICMMES-2011), Lyon, July 4-8
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