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TIMF - ISSN 2514-4642 - © ISTE Ltd
Thermodynamics of Interfaces and Fluid Mechanics deals with interfaces that are space areas with a low thickness and which separate environments of different properties. They designate phase separation but also thin flames and waves of discontinuity. At a macroscopic scale, they are associated with material surfaces that possess thermodynamic attributes and their own behavior laws.
The analysis of systems with interfaces involves scale changes and the use of specific techniques such as asymptotic developments, the second gradient theory or the phase field model method. Digital simulation is implemented in order to solve the complex systems studied. Testing is an essential step to solve the set problems.
2D varieties of interfaces often coexist with 1D varieties such as ligaments (atomization), contact lines (set drops) or Plateau’s edges (foams).
The articles in the journal deal with all of the mentioned above subjects.
Thermodynamique des interfaces et mécanique des fluides traite des interfaces qui sont des zones de l’espace de faible épaisseur séparant des milieux à propriétés différentes. Elles désignent les séparations de phase, mais aussi les flammes minces et les ondes de discontinuité. A l’échelle macroscopique, on les assimile à des surfaces matérielles douées de propriétés thermodynamiques et possédant leurs propres lois de comportement.
L’analyse des systèmes comprenant des interfaces implique des changements d’échelle et l’utilisation de techniques spécifiques telles que les développements asymptotiques, la théorie du second gradient ou la méthode des champs de phase. La simulation numérique est mise en œuvre pour résoudre les systèmes complexes étudiés. L’expérimentation est une étape indispensable pour résoudre les problèmes posés.
Les variétés 2D que constituent les interfaces coexistent fréquemment avec des variétés 1D telles les ligaments (atomisation), les lignes de contact (gouttes posées) ou les bords de Plateau (mousses).
Les articles de la revue traitent de l’ensemble des disciplines énumérées plus haut.
Blood circulation has fascinated minds since the Egyptians, but it was not until the eventeenth century and William Harvey to have a coherent view at the same time as a real revolution in medicine. After a brief history, a precise description of the heart, the motor of movement, seemed indispensable, followed by that of the multiple and varied vessels in which the blood flows and exchanges with the organs. This is followed by a fluid mechanics section and an incentive conclusion.
This paper makes a contribution by generalizing the classical series solution for initial boundary value problems of the one-dimensional reaction-diffusion equation on any finite interval of the real line. The general form of the equation is considered on a generic bounded interval and is subjected in the unified way to the three classical boundary conditions, namely the Neumann, Dirichlet, and Robin boundary conditions. The Fourier decomposition method, is used to derive the solution of the resulting homogeneous equation with zero boundary conditions. Subsequently, the solution of the nonhomogeneous equation with homogeneous boundary conditions is obtained using the Duhamel’s principle. Finally, the solution of the general problem is obtained as a convergent series over the considered interval, with the construction of an auxiliary. The Hopf-Cole transformation has facilitated the generalization of the exact solution of the Burger’s equation to generic intervals, as demonstrated by the described method.
The simulation engine system is an important issue in the automotive industry because of speeding up the design process, and limit the use of physical prototypes testing. The platform AMESim allows to access to libraries models for simulating engine or vehicle. Modeling approaches (0D/1D) do not however allow to match the 3D code accuracy levels. From this the study is on OpenFoam (simulation software CFD 3D) in order to reduce the problem in 1D with opening new perspectives of computing time, and prediction quality.
Editorial Board
Editor in Chief
Roger PRUD’HOMME
Sorbonne Université – CNRS
roger.prud_homme@upmc.fr
Co-Editors
Kwassi ANANI
Université de Lomé
Togo
kanani@univ-lome.tg
Abdon ATANGANA
IGS- Bloemfontein
Republic of South Africa
AtanganaA@ufs.ac.za
Amine CHADIL
CNRS, MSME
amine.chadil@cnrs.fr
Christian CHAUVEAU
CNRS – ICARE
christian.chauveau@cnrs-orleans.fr
Alain MAILFERT
Université de Lorraine
alain.mailfert@univ-lorraine.fr
Mahouton Norbert HOUNKONNOU
University of Abomey-Calavi
Benin
norbert_hounkonnou@cipma.net
Sébastien TANGUY
IMFT - Toulouse
tanguy@imft.fr
Pierre TRONTIN
LMFA - Université de Lyon 1
pierre.trontin@univ-lyon1.fr
Stéphane VINCENT
Université Paris-Est Marne-La-Vallée
stephane.vincent@u-pem.fr