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Etude expérimentale du comportement aérothermique de gouttes en écoulement réactif ou non par utilisation de la fluorescence induite par laser à deux couleurs

Abstract : The knowledge of aerothermal phenomena occurring in the combustion chamber is a key point in the improvement of the efficiency and in the reduction of the pollutant emissions of automotive and turbojets engines. Non intrusive optical diagnostics are used in order to investigate the mechanisms governing the droplets evaporation. A technique based on two colors laser-induced fluorescence allows to obtain the space averaged temperature of streaming droplets. Furthermore, the extension of the technique to measurements of the temperature distribution over a droplet has been tested and validated. Relevant data on evaporating and combusting monodisperse droplet streams have been accumulated for different injection parameters i.e. temperature, velocity, size and inter-droplet spacing. Heat and mass transfer mechanisms involved in the evaporation process are inferred from the experimental data.
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https://hal.univ-lorraine.fr/tel-01748640
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  • HAL Id : tel-01748640, version 1

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Pascal Lavieille. Etude expérimentale du comportement aérothermique de gouttes en écoulement réactif ou non par utilisation de la fluorescence induite par laser à deux couleurs. Autre. Université Henri Poincaré - Nancy 1, 2001. Français. ⟨NNT : 2001NAN10121⟩. ⟨tel-01748640⟩

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