Puffing/micro-explosion in composite multi-component droplets

نویسندگان

چکیده

A new simple model for the puffing and micro-explosion of composite multi-component water/liquid fuel droplets is suggested. This based on assumption that a spherical water sub-droplet located in centre droplet. The effects droplet thermal swelling are considered; Abramzon Sirignano applied analysis heating evaporation. It assumed puffing/micro-explosion starts when temperature at interface becomes equal to nucleation temperature. Assuming species diffusion coefficient constant each time step, equation inside solved analytically. Raoult’s law surface used. analytical solution incorporated into numerical code alongside previously obtained heat transfer Both solutions used step calculations. kerosene/water droplets. experimentally observed predicted times shown be reasonably close, decrease with increasing ambient gas temperatures increase initial radii. Taking account presence multiple components leads longer compared case kerosene approximated by cycloundecane (the dominant component kerosene).

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ژورنال

عنوان ژورنال: International Journal of Heat and Mass Transfer

سال: 2022

ISSN: ['1879-2189', '0017-9310']

DOI: https://doi.org/10.1016/j.ijheatmasstransfer.2021.122210