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Détection du kérosène par imagerie de fluorescence induite par laser, pour application sur foyer aéronautique

Abstract : The new concepts of aeronautical engines, developed to follow the evolution of the European standards of pollution, are generally based on an improvement of the processes of liquid fuel injection and mixture in the combustion chamber. There is currently no model mature enough to work without experimental validation. The purpose of this thesis is to assess the possibility of measuring the kerosene (Jet A1) vapour distribution by PLIF (Planar Laser Induced Fluorescence). That measurement technique must quantitatively image the instantaneous concentrations fields of the vaporized fuel in a spray. The implementation of such a technique needs an experimental spectroscopic study, which was realized on the vapour of fuel. First of all, this study allowed us to determine the properties of the kerosene fluorescence spectrum versus physical parameters such as temperature, pressure or gas mixture composition, especially in presence of oxygen molecules. Then, it was shown that the fluorescence spectrum of the fuel could be reproduce in all physical conditions by a single mixture of four aromatics. Their photophysical properties were also analyzed. Following this spectroscopic study, a phenomenological model for the fluorescence of the gaseous fuel was set up. This model led us to a protocol for an optical diagnostic on this fuel vapour. An experiment was set up to test the implementation and the limits of this technique in simple laboratory conditions. This experiment confirmed that this is indeed a promising technique for the diagnostic of the fuel vapour in aeronautical engine.
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Contributor : Philippe Baranger <>
Submitted on : Thursday, May 5, 2005 - 12:45:11 PM
Last modification on : Tuesday, March 16, 2021 - 3:42:04 PM
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  • HAL Id : tel-00009189, version 1



Philippe Baranger. Détection du kérosène par imagerie de fluorescence induite par laser, pour application sur foyer aéronautique. Autre. Université Paris Sud - Paris XI, 2004. Français. ⟨tel-00009189⟩



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