Mechanical and engineering systems

Permanent URI for this collectionhttps://dspace.univ-boumerdes.dz/handle/123456789/9645

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Author: search.filters.author.Brahimi, F.(Promoteur)

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    Effect of the compressor cooling on the blades mechanical strength
    (Université M’Hamed Bougara Boumerdes : Faculté de Technologie, 2017) Iben El Boushaki, Zakaria; Berchache, Mourad; Brahimi, F.(Promoteur)
    In this Work, he will address to the study of the air flow simulation over a compressor blade and measuring the forces acting on them,so to analyze the Aerodynamic flow over the blade, computational fluid dynamics (CFD) is a powerful method for this simulation.The flow around the compressor blade is studied and analyzed using three types of Materials ( Steel,Titanium Alloy,Aluminum Alloy) with the profile NACA 65-10%,the same operating conditions are applied to compute the performance parameters,i.e. Static pressure, Velocity and the aerodynamic coefficients which are the Lift and the drag,after that we conclude the forces according to these two parameters (Lift and Drag).Then we will address to study the effect of the aerodynamic forces which are by the air flow on the blade surface and its influence on the Von Mises stress and the total deformation to see which of these three materials is better for operating and more powerful and resistant than the two others while the forces are acting on them
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    Computational analysis for wing geometry optimization
    (Université M’Hamed Bougara Boumerdes : Faculté de Technologie, 2017) Kherroubi, Abdelkader; Benouerekhou, Tarek; Brahimi, F.(Promoteur)
    In Order to optimize the geometry of aircraft wings,the aim of the work is to highlight the effect of the geometric parameters of these wings such as wing span,chord and camber on the one hand on the behavior of the fluid around the wing and,on the other hand,the behavior of the wing against the forces exerted by the fluid.The tool used in this work is ANSYS software which is highly reputed for its effectiveness in several fields.In the first step of the work we performed the simulation of the air flow around the wing in the fluid part of the software in a three-dimensional configuration.The flow is stationary and compressible with an upstream Mach number of 0.29. This allows us to determine the forces exerted by the fluid on the wing.These forces are represented by the aerodynamic coefficients of lift and drag.In the second part of the work we carried out simulations in the structural part of the software.The wing being subjected to the force exerted by the fluid,we have determined the Von-Mises stress, the elastic deformation, the deformation energy and the maximum deformation undergone by the wing. The simulations were carried out for different configurations corresponding to wings with different wingspans,chords and different camber.The results obtained have clearly shown that the geometrical parameters of the wings have a considerable effect on the evolution of the various variables used