[PDF] Top 20 Comput. Appl. Math. vol.23 número23

... Symposium on Computational Modeling of Multiscale Phenomena which took place at National Laboratory for Scientific Computing (LNCC/MCT, Petropolis 05/08/2002 - 09/08/2002) was the second[r] ... See full document

... Each grain of a ferromagnetic polycrystalline material is divided into domains (figure 3) that are magnetised at saturation, whatever the external magnetic field (Bozorth, 1951). Easy di[r] ... See full document

... σgeology originates in the incomplete set of observations (the oil cut) used to characterize the reservoir. It is defined as the standard deviation associated with the following predicti[r] ... See full document

... Conceptually, there are two kinds of mathematical models describing the dynam- ics of homogeneous aerosol particles: deterministic and stochastic models. The deterministic models describe the evolution of some average ... See full document

... ary of the averaging volume [37]. Finally, unlike homogeneous porous media, averaged properties in dendritic structures not only depend on the location of the averaging volume but also depend on the size of this latter. ... See full document

... We can understand the pseudoelastic behavior (i.e. mechanical hysteresis but no residual strain when the high temperature austenite phase is subjected to an external stress) based on the[r] ... See full document

... The microforce balance, augmented with suitable constitutive information, yields: a kinetic equation for the microstructural field; criteria for both cohesion decreasing (damage initia- [r] ... See full document

... In the previous part, we have made use of the classical homogenization procedure to obtain separately an elastic effective potential and a viscoplastic effective potential.. We postulate[r] ... See full document

... Recently, there has been significant progress in the direction of discrete crack growth modeling – the development of a partition of unity finite element method for crack modeling (coine[r] ... See full document

... In section 1, the classical deep bed filtration model is presented. Its stochas- tic generalization accounting for pore and particle size distributions is derived in Section 2. The initial-boundary value problem for ... See full document

... In particular, a number of approaches have been intro- duced where the coupling of small scale information is performed through a numerical formulation of the global problem by incorpora[r] ... See full document

... In the modeling of the underground transport, first question is how to handle the fluid flow. In all models reviewed in [23] and [15], and further studied in [14], we remark that the concentration of the ... See full document

... Since none of these models could describe all the features of the dissolution physics, in particular they failed to describe the coupled nature of flow and reaction without assuming a wo[r] ... See full document

... The vertical equilibrium theory, which hinges on the idealized situation of perfect communication between adjacent layers (maximum viscous crossflow), only predicts the following two flo[r] ... See full document

... Thus, the effective stress of a quadriphasic medium can be derived from a regular strain energy function, which physically has the same meaning as in single phase or biphasic media, but [r] ... See full document

... Lu and Zhang [2002] applied moment equation approach to study groundwater flow in a multimodal heterogeneous medium, where the large-scale heterogeneity, the distribution of the various [r] ... See full document

... A large bibliography on free and moving boundary problems for the heat- diffusion equation was given in [23]. Gupta [10] presented an approximate solution to a coupled heat and mass transfer problem involving ... See full document

... In the case of linear programming, we obtain a family of interior point methods where all the iterates and perturbed vectors are computed with very simple formulae, without factorization[r] ... See full document

... In [20] Leszczynski and Ciesielski proposed an algorithm for the numerical solution of arbitrary differential equations of fractional order. Which is obtained by using the following decomposition of the differential ... See full document

... We replace the strong condition, where the operator involved must be a contraction, which appears in the fixed point theorem and guarantees the global convergence, by condition (4), alon[r] ... See full document