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A NUMERICAL STUDY OF ETHANOL-WATER DROPLET EVAPORATION
KTH, School of Engineering Sciences (SCI), Mechanics.
KTH, School of Engineering Sciences (SCI), Mechanics.ORCID iD: 0000-0001-5886-415X
2017 (English)In: PROCEEDINGS OF THE ASME TURBO EXPO: TURBINE TECHNICAL CONFERENCE AND EXPOSITION, 2017, VOL 3, AMER SOC MECHANICAL ENGINEERS , 2017Conference paper (Refereed)
Abstract [en]

The present effort focuses on detailed numerical modelling of the evaporation of an ethanol-water droplet. The model intends to capture all relevant details of the process: it includes species and heat transport in the liquid and gas phases, and detailed thermo-physical and transport properties, varying with both temperature and composition. Special attention is reserved to the composition range near and below the ethanol/water azeotrope point at ambient pressure. For this case, a significant fraction of the droplet lifetime exhibits evaporation dynamics similar to those of a pure droplet. The results are analysed and model simplifications are examined. In particular, the assumptions of constant liquid properties, homogeneous liquid phase composition and no differential volatility may not be valid depending on the initial droplet temperature.

Place, publisher, year, edition, pages
AMER SOC MECHANICAL ENGINEERS , 2017.
Keywords [en]
Droplet, Biofuel, Spray combustion, Multicomponent evaporation
National Category
Energy Engineering
Identifiers
URN: urn:nbn:se:kth:diva-217084ISI: 000412719000006OAI: oai:DiVA.org:kth-217084DiVA, id: diva2:1155015
Note

QC 20171106

Available from: 2017-11-06 Created: 2017-11-06 Last updated: 2017-11-06Bibliographically approved

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Lupo, GiandomenicoDuwig, Christophe

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