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Ecoulement dans une pompe à vide turbomoléculaire : modélisation et analyse par voie numérique

Abstract : The thesis is devoted to the modeling and the numerical analysis of the flow in a turbomolecular vacuum pump of hybrid type, that is combining a succession of rotor and stator stages with an Holweck. A 3D Test Particle Monte Carlo approach has been developed for simulating industrial pump configurations (complex blade geometries, management of rotor and stator stages), with attention paid to the optimization of the computational cost. The numerical tool developed in the thesis has been validated for academic and industrial test cases, relying in particular on reference experimental results obtained on the test rig of the aVP company. The prediction improvement brought by the TPMC 3D approach with respect to the design tools available at the start of the thesis has been clearly demonstrated for the free molecular flow regime. Some design recommendations have also been formulated using the developed solver. The potential of a Direct Simulation Monte Carlo approach, taking into account the interactions between gas molecules, has also been established in 2D for the transition regime.
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Submitted on : Friday, January 20, 2017 - 3:18:07 PM
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  • HAL Id : tel-01401145, version 1




ye Wang. Ecoulement dans une pompe à vide turbomoléculaire : modélisation et analyse par voie numérique. Mécanique des fluides [physics.class-ph]. Université de Grenoble, 2013. Français. ⟨NNT : 2013GRENI062⟩. ⟨tel-01401145⟩



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