Evaporation of bi-component droplets in a heated, highly turbulent flowReportar como inadecuado




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1 IMFT - Institut de mécanique des fluides de Toulouse

Abstract : This work aims to understand the phenomena that occur in a combustion chamber where multi-component fuel droplets are injected. Many evaporation models exist but the influence of turbulence on spray vaporization is not yet well understood. This study gives a useful database to improve these models. The objective of the work is to measure the dispersion and the evaporation of bi-component octane-3-pentanone droplets and the resulting vapor mixing in a well-known, heated, highly turbulent channel flow. The carrier flow shows high turbulence levels, flat profiles for the mean velocity and the velocity fluctuations. The injected droplets have a large variety of behaviors due to the large polydispersion and to the turbulence. The evolution of 3-pentanone liquid concentration, mass flux, and droplet clusters are described. Mean concentration, fluctuations of concentration, and mixing of the vapor phase are characterized.

Mots-clés : Turbulence generator Bi-component droplets Evaporation PLIF





Autor: Florian Moreau - Rudy Bazile -

Fuente: https://hal.archives-ouvertes.fr/



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