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Modélisation et simulation numérique du procédé de perçage non débouchant par jet d'eau abrasif.

Abstract : Due to the increasing growth of the use of abrasive waterjets in the industry, especially for drilling, the aim of this work is to understand the mechanism of material removal occurring when an abrasive water jet impinges on a solid body. Given the difficulty of achieving precise experimental studies where the spotlight is on the inside of the hole during the drilling process, the purpose of this thesis is to build a numerical model representing this machining process. Such a model involves: modeling the fluid jet and the abrasive particles, modeling of the erosion due to the particles impact on the target's surface and an interaction procedure between both models. The choice of using the Computational Fluid Dynamics software Fluent 6, led to a validation study made to demonstrate its ability and compatibility with our extreme conditions of work. It is coupled with models of erosion and remeshing of the computational domain. This configuration allowed us to achieve the simulations of the vertical drilling of a steel plate which was the objective of an experimental study at the Arts et Mériers ParisTech in collaboration with SNECMA. The validation of our modeling is obtained by comparing numerical results to experimental ones, i.e. the holes profiles, produced by our simulation are compared to those provided by the experiments. This comparison shows a good agreement for the hole's depth and diameter; the gap is never greater than 10%.
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https://pastel.archives-ouvertes.fr/pastel-00005294
Contributor : Ecole Arts Et Métiers Paristech <>
Submitted on : Wednesday, September 2, 2009 - 8:00:00 AM
Last modification on : Wednesday, November 29, 2017 - 9:42:52 AM
Long-term archiving on: : Friday, September 10, 2010 - 1:34:36 PM

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Mazen Zaki. Modélisation et simulation numérique du procédé de perçage non débouchant par jet d'eau abrasif.. Sciences de l'ingénieur [physics]. Arts et Métiers ParisTech, 2009. Français. ⟨NNT : 2009ENAM0018⟩. ⟨pastel-00005294⟩

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