Exageraciones de pensamiento, palabra y obra: ¡antioqueño es mi Dios!

Fondo Margaritainés Restrepo

Simulação de fluxo de fluidos em meios porosos desordenados uma análise de efeito de escala na estimativa da permeabilidade e do coeficiente de arrasto

The present study provides a methodology that gives a predictive character the computer simulations based on detailed models of the geometry of a porous medium. We using the software FLUENT to investigate the flow of a viscous Newtonian fluid through a random fractal medium which simplifies a two-dimensional disordered porous medium representing a petroleum reservoir. This fractal model is formed by obstacles of various sizes, whose size distribution function follows a power law where exponent is defined as the fractal dimension of fractionation Dff of the model characterizing the process of fragmentation these obstacles. They are randomly disposed in a rectangular channel. The modeling process incorporates modern concepts, scaling laws, to analyze the influence of heterogeneity found in the fields of the porosity and of the permeability in such a way as to characterize the medium in terms of their fractal properties. This procedure allows numerically analyze the measurements of permeability k and the drag coefficient Cd proposed relationships, like power law, for these properties on various modeling schemes. The purpose of this research is to study the variability provided by these heterogeneities where the velocity field and other details of viscous fluid dynamics are obtained by solving numerically the continuity and Navier-Stokes equations at pore level and observe how the fractal dimension of fractionation of the model can affect their hydrodynamic properties. This study were considered two classes of models, models with constant porosity, MPC, and models with varying porosity, MPV. The results have allowed us to find numerical relationship between the permeability, drag coefficient and the fractal dimension of fractionation of the medium. Based on these numerical results we have proposed scaling relations and algebraic expressions involving the relevant parameters of the phenomenon. In this study analytical equations were determined for Dff depending on the geometrical parameters of the models. We also found a relation between the permeability and the drag coefficient which is inversely proportional to one another. As for the difference in behavior it is most striking in the classes of models MPV. That is, the fact that the porosity vary in these models is an additional factor that plays a significant role in flow analysis. Finally, the results proved satisfactory and consistent, which demonstrates the effectiveness of the referred methodology for all applications analyzed in this study.

Literatura y violencia en la narrativa latinoamericana reciente

Tabla de contenidos: De la memoria: ética, estética y autoridad / Carlos Pabón. Violencia y literatura / violencia en la literatura / Gustavo Lespada. Guzmán, Kohan, Pauls: la representación de lo militar en la literatura argentina / Claudia Torre. Narrar desde la violencia del vencedor / Ana María Amar Sánchez. Huellas de la violencia en relatos de Alarcón, Roncagliolo y Thays / María Elena Torre. Narrativas de la violencia: hipérbole y exceso en Insensatez de Horacio Castellanos Moya / Celina Manzoni. Voces del desencanto y la violencia en la narrativa latinoamericana / María del Pilar Vila. El culto de la violencia empieza por el lenguaje / Mónica Marinone. La furia reproductora de la madre y de la patria. Una imagen de Colombia por Fernando Vallejo / Julia Musitano. Violencia y literatura en América Latina a partir de 2666 de Roberto Bolaño / Paula Aguilar. Las memorias perturbadoras: revisión de la izquierda revolucionaria en la narrativa de Horacio Castellanos Moya / Teresa Basile.

Avaliação da estabilidade postural durante a realização de exercícios de equilíbrio com diferentes níveis de dificuldade

Projeto de Graduação apresentado à Universidade Fernando Pessoa como parte dos requisitos para obtenção do grau de Licenciado em Fisioterapia