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In the petroleum industry, understand the relationship among the parameters that optimize and develop the oil field is very important to optimize the economic returns of Petroleum Company. As well, the most economically profitable fields are the most easily accessible and simple to exploit. This simplicity is based mainly on a better understanding of the process in anisotropic rocks and their influence on the elastic modelling and characterization of naturally fractured reservoirs. In this context, among the main tasks of the reservoir engineer is to optimize production. Furthermore, it called on reliable tools, first to visualize the sub-surface in order to identify the location of potential reservoirs and to describe the geometric structure of a reservoir to predict dynamic behavior using software numerical simulation. The crux of the work presented in this article concerns a better understanding of the reservoir. And to do this, we are faced with the challenge to exploit a deemed useful tool in order to construct a representative model of the sub-surface reality from the available data. Based on the toolbox MRST (Matlab Reservoir Simulation Toolbox), we developed a scientific tool for estimating hydrocarbon reserves and to simulate the reservoir model and then predict how fluids flow through this model. [ABSTRACT FROM AUTHOR]

The aim of this paper is to study a bioclimatic house using solar energy which must guarantee the feeling of comfort for its occupants. It is located at Souidani west of Algiers (Algeria). This prototype is tested in order to obtain good energy efficiency to enable energy savings. The work presented in the Algerian climatic conditions, is a heating and cooling system of a house by reversible underfloor. The technique is used in order to ensure a comfortable climate throughout the year. We proceed to the numerical simulation of the thermal behavior of the indoor environments of the house considered, using the Fluent software. The results show that the reversible underfloor heaters all the rooms of the habitat, homogeneously, and also contributes to its cooling in summer. This system provides thermal comfort superior to other conventional systems. [ABSTRACT FROM AUTHOR]

In this work, we present a numerical study of natural convection in a vertical rectangular enclosure simulating a thermosyphon. The governing equations have been solved by a numerical approach based on the finite volume method using the fluent code. An initial validation was conducted by comparing our results with those of other authors. Thereafter, the working fluid has been varied as well as the length and position of the fin. We considered the influence of the parameters mentioned above on the temperature fields, the heat flux density and the average Nusselt number. The optimal conditions that allow obtaining maximum heat transfer rates have been determined. [ABSTRACT FROM AUTHOR]

In this paper API 5L X70 steel is characterize experimentally by mechanical tests. Tension tests, microstructure, hardness and resilience and finally bending tests are performed. A finite element validation study using ANSYS calculation code is presented in the case of bending in order to validate the constitutive equation. [ABSTRACT FROM AUTHOR]

Pitched roof Steel frame structures are widely used as industrial buildings for practical reasons of exploitation, durability and cost efficiency. However, steel although is a ductile material, it remains vulnerable to excessive temperatures. The recent accidents which occurred in the industrial buildings of Sonatrach (Algeria), in an urban area in Algiers or in an industrial zone in Skikda, remind us of the real danger and the potential risk of fire. The recent European norms define active and passive requirements for the design of industrial buildings under fire. The objective of this work is to investigate the behaviour of portal steel frames in fire situation. A numerical analysis using FEM software ANSYS is performed using geometric and material non-linear finite strength with a variation in temperature until ultimate collapse. Several load ratio and fire scenarios are considered in order to evaluate the critical temperature and the variation of the displacements with increasing temperature. The results of the numerical modelling are compared with simplified methods of EC3-1.2. [ABSTRACT FROM AUTHOR]