Blended E85-diesel fuel droplet heating and evaporation

Al-Esawi, N., Al Qubeissi, M., Whitaker, R. and Sazhin, S. S. (2019) Blended E85-diesel fuel droplet heating and evaporation. Energy Fuels. 33(3), 2477–2488. 0887-0624.

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Blended E85-diesel fuel droplet heating and evaporation
Blended_E85_diesel_fuel_droplet_heating_and_evaporation.docx - Accepted Version

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Abstract:

The multidimensional quasi-discrete (MDQD) model is applied to the analysis of heating and evaporation of mixtures of E85 (85 vol % ethanol and 15 vol % gasoline) with diesel fuel, commonly known as “E85–diesel” blends, using the universal quasi-chemical functional group activity coefficients model for the calculation of vapor pressure. The contribution of 119 components of E85–diesel fuel blends is taken into account, but replaced with smaller number of components/quasi-components, under conditions representative of diesel engines. Our results show that high fractions of E85–diesel fuel blends have a significant impact on the evolutions of droplet radii and surface temperatures. For instance, droplet lifetime and surface temperature for a blend of 50 vol % E85 and 50 vol % diesel are 23.2% and up to 3.4% less than those of pure diesel fuel, respectively. The application of the MDQD model has improved the computational efficiency significantly with minimal sacrifice to accuracy. This approach leads to a saving of up to 86.4% of CPU time when reducing the 119 components to 16 components/quasi-components without a sacrifice to the main features of the model.

Uncontrolled Keywords:

Activity coefficient, Diesel, Ethanol, Evaporation, Fuel blends, Gasoline, Heating

Creators:

Al-Esawi, N., Al Qubeissi, M., Whitaker, R. and Sazhin, S. S.

Faculties, Divisions and Institutes:

Faculties > Faculty of Arts, Science & Technology > Engineering

Date:

1 February 2019

Date Type:

Publication

Page Range:

2477–2488

Journal or Publication Title:

Energy Fuels

Volume:

Number:

Number of Pages:

522059

Language:

English

ISSN:

0887-0624

Status:

Published / Disseminated

Refereed:

Yes