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Modélisation de l'écoulement polyphasique à l'intérieur et en sortie des injecteurs Diesel

Abstract : Because of pollutant emission requirements for individual vehicles, engine designers are very concerned about high pressure Diesel injection and the related cavitation phenomenon. Computational fluid dynamics is a powerful and cheap tool to investigate such complex systems. A homogeneous multiphase model has been developed: it consists in a mixture of fuel - that may be either liquid or vapor - and gas. It is based on an equation of state that was tabulated between a barotropic law for the fuel and the ideal gas equation for the gas. This model is validated on a bubble collapse test and on classical 2D injection cases. 3D computations on realistic injectors highlight the influence of cavitation and secondary flows, inside the injector nozzle, on jet destabilization and liquid core primary atomization.
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https://tel.archives-ouvertes.fr/tel-00153336
Contributor : Jean-Baptiste Moreau <>
Submitted on : Sunday, June 10, 2007 - 7:41:40 PM
Last modification on : Friday, October 23, 2020 - 4:52:40 PM
Long-term archiving on: : Thursday, April 8, 2010 - 7:24:43 PM

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  • HAL Id : tel-00153336, version 1

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Jean-Baptiste Moreau. Modélisation de l'écoulement polyphasique à l'intérieur et en sortie des injecteurs Diesel. Energie électrique. Institut National Polytechnique de Toulouse - INPT, 2005. Français. ⟨tel-00153336⟩

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