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Molecular Dynamics Simulations of the Evaporation Process of a Fuel Droplet Under Supercritical Environment

Xiao, GW; Luo, KH; Ma, X; Shuai, SJ; (2017) Molecular Dynamics Simulations of the Evaporation Process of a Fuel Droplet Under Supercritical Environment. Kung Cheng Je Wu Li Hsueh Pao/Journal of Engineering Thermophysics , 38 (12) pp. 2745-2751. Green open access

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Abstract

The evaporation process of an n-dodecane droplet surrounded by nitrogen ambient under supercritical pressures and sub- to super-critical temperatures is studied by molecular dynamics simulation. Results show that the evaporation process under high pressures depart considerably from the theoretical prediction of D2-law. Both environmental pressure and temperature have significant inuence on the evaporation rate, and elevated pressure can greatly increase the nitrogen solubility in the liquid phase and also the liquid-vapor interface thickness. It is found that under supercritical environmental conditions, the expanded interface may enter the continuum regime, leading to a diffusion dominated mixing process, rather than a conventional evaporation.

Type: Article
Title: Molecular Dynamics Simulations of the Evaporation Process of a Fuel Droplet Under Supercritical Environment
Open access status: An open access version is available from UCL Discovery
Publisher version: http://jetp.iet.cn/EN/article/showTenYearVolumnDet...
Language: Chinese
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Mechanical Engineering
URI: https://discovery.ucl.ac.uk/id/eprint/10058869
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