Ben-Naim, E. Krapivsky, P. L.
Published in
Journal of Statistical Physics

We study domain distributions in the one-dimensional Ising model subject to zero-temperature Glauber and Kawasaki dynamics. The survival probability of a domain, S(t)∼t−ψ, and an unreacted domain, Q1(t)∼t−δ, are characterized by two independent nontrivial exponents. We develop an independent interval approximation that provides close estimates for ...

de Cougny, H. L.
Published in
Engineering with Computers

This paper presents an adaptation scheme for surface meshes. Both refinement and coarsening tools are based upon local retriangulation. They can maintain the geometric features of the given surface mesh and its quality as well. A mesh gradation tool to smooth out large size differences between neighboring (in space) mesh faces and a procedure to de...

Serriere, Mickael Gandin, Charles-André Gautier, Elisabeth Archambault, Pierre Dehmas, Moukrane

A precipitation model is developed based on three physical mechanisms, ie nucleation, growth and coarsening of the precipitates. The model follows the particle size distribution by using a finite volume method. Inputs of thermodynamic data are required, such as the driving force for nucleation and equilibrium concentrations. An ideal dilute solutio...

Sire, Clément

We study the autocorrelation function of a conserved spin system following a quench at the critical temperature. Defining the correlation length $L(t)\\sim t^{1/z}$, we find that for times $t\'$ and $t$ satisfying $L(t\')\\ll L(t)\\ll L(t\')^\\phi$ well inside the scaling regime, the autocorrelation function behaves like $\\sim L(t\')^{-(d-2+\\eta)...

Serrière, Mickaël

Un modèle de précipitation a été développé pour des alliages multiconstitués, en particulier pour un alliage d'aluminium 3003, et pour la prise en compte de plusieurs phases précipitées. Ce modèle est capable de simuler l'évolution de la distribution de taille de particules lors de traitements thermiques simples, comme les maintiens isothermes, mai...

WAKAI, F YOSHIDA, M KASHYAP, BP

Three-dimensional numerical simulation was performed to show that coarsening and grain growth was affected by particle arrangement in sintering of identical spheres. In the sintering of a row of three spheres the center particle with the coordination number of 2 coarsened, while particles on both sides with coordination number of I shrank and disap...

Lambert, Jérôme Mokso, Rajmund Cantat, Isabelle Cloetens, Peter Delannay, Renaud A. Glazier, James Graner, François

We used X-ray tomography to characterize the geometry of all bubbles in a liquid foam of average liquid fraction $\phi_l\approx 17\,\%$ and to follow their evolution, measuring the normalized growth rate $\mathcal{G}=V^{-\frac{1}{3}}\frac{dV} {dt}$ for 7000 bubbles. While $\mathcal{G}$ does not depend only on the number of faces of a bubble, its av...

Oskam, Gerko Poot, Felipe de Jesús Peet
Published in
Journal of Sol-Gel Science and Technology

We report on the synthesis of ZnO and TiO2 nanoparticles by solution-phase methods, with a particular focus on the influence of experimental parameters on the kinetics of nucleation and coarsening. The nucleation rate of ZnO from the reaction between ZnCl2 and NaOH in ethanol was found to increase with increasing precursor concentration, while the ...

de Bruyn, John R.
Published in
Rheologica Acta

The drag force on a sphere moving through an aqueous foam is measured as the foam ages. After an initial period, the steady-state drag decreases with age T as T−0.54±0.14. As the mean bubble size R in the foam coarsens as T0.5, this implies that the drag force scales as \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepac...

de Albuquerque, Maria da Consolação Fons... Rodrigues, José de Anchieta

Double-torsion tests were carried out on a commercial ceramic floor tile to verify whether this test is suitable for determining the R-curve of ceramics. The instantaneous crack length was obtained by means of compliance calibration, and it was found that the experimental compliance underestimates the real crack length. The load vs. displacement cu...