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Mathematical Modelling of the Permeation of Gases in Polymers

In this work, we focus on the experiments of permeation in order to characterise the transport coefficients and how they depend on the gas concentration. First, a physical and mathematical modelling approach is presented. Two models are used in order to describe the diffusion of gases in polymers. The mathematical modelling leads thereafter to the construction of an unusual...

Hex-Dominant Mesh Improving Quality to Tracking Hydrocarbons in Dynamic Basins

The proposed method regularizes as far as possible some verticals of a hex-dominant basin mesh; this regularization is used to optimize the numerical simulation of hydrocarbons flow in basins. The studied basins contain faults and constitute complex geometries.This mesh optimization is adapted for a new way to mesh basins called the “Constrained Grid Method” (CGM). Data...

Neural networks and principle component analysis approaches to predict pile capacity in sand

, Selection of the number of principal components: the variance of the reconstruction error criterion with a comparison to other methods , Indust and Eng Chemistry Research 38 , 4389 - 4401 ( 1999 ) 15. A ... . Benali . Application des réseaux de neurones artificiels pour prédire la capacité portante axiale d'un pieu . Thèse de doctorat, ( 2016 ) 16. Eurocode 7, Geotechnical design - general rules. Thomas Telford

Finite element modeling of the aluminothermic welding with internal defects and experimental analysis

, 20 - 21 ( 2006 ). 5. I. Mouallif , A. Chouaf , A. Elamri , A. Benali , Effets des défauts de soudure aluminothermique sur le comportement mécanique des rails , Revue de Mécanique & Industries (EDP ... Sciences ) 12 , 343 - 351 ( 2011 ). 6. I. Mouallif , A. Elamri , A. Chouaf , A. Benali , Étude du comportement des rails soudés par aluminothermie, 3ème Congrès International Conception et Modélisation des

Co-refinement of fault surfaces : convexification process

CO-REFINEMENT OF FAULT SURFACES : CONVEXIFICATION PROCESS C. Dobrzynski P. Frey Ph. Pebay Editors L. Agelas A. Benali S. Benteboula A. Claisse P. Have A. Loseille The aim of this work is to

Co-refinement of fault surfaces : convexification process

CO-REFINEMENT OF FAULT SURFACES : CONVEXIFICATION PROCESS C. Dobrzynski P. Frey Ph. Pebay Editors L. Agelas A. Benali S. Benteboula A. Claisse P. Have A. Loseille The aim of this work is to

Analyse et simulation de l'influence de la température et de la pression sur les coefficients de transport du CO2 dans du PVDF

Ce travail est consacré à l'optimisation des coefficients de transport de gaz dans les polymères. Il consiste à modéliser l'influence de la température et de la pression sur le coefficient de diffusion. La modélisation est validée par optimisation sur le système CO2-PVDF. Un modèle quadratique en pression généralisant des travaux existants est proposé. Ce modèle décrit en...