Modeling of Heating and Evaporation of FACE I Gasoline Fuel and its Surrogates
Type
Conference PaperKAUST Department
Chemical Engineering ProgramClean Combustion Research Center
Combustion and Pyrolysis Chemistry (CPC) Group
Computational Reacting Flow Laboratory (CRFL)
Mechanical Engineering Program
Physical Science and Engineering (PSE) Division
Date
2016-04-05Permanent link to this record
http://hdl.handle.net/10754/618131
Metadata
Show full item recordAbstract
The US Department of Energy has formulated different gasoline fuels called ''Fuels for Advanced Combustion Engines (FACE)'' to standardize their compositions. FACE I is a low octane number gasoline fuel with research octane number (RON) of approximately 70. The detailed hydrocarbon analysis (DHA) of FACE I shows that it contains 33 components. This large number of components cannot be handled in fuel spray simulation where thousands of droplets are directly injected in combustion chamber. These droplets are to be heated, broken-up, collided and evaporated simultaneously. Heating and evaporation of single droplet FACE I fuel was investigated. The heating and evaporation model accounts for the effects of finite thermal conductivity, finite liquid diffusivity and recirculation inside the droplet, referred to as the effective thermal conductivity/effective diffusivity (ETC/ED) model. The temporal variations of the liquid mass fractions of the droplet components were used to characterize the evaporation process. Components with similar evaporation characteristics were merged together. A representative component was initially chosen based on the highest initial mass fraction. Three 6 components surrogates, Surrogate 1-3, that match evaporation characteristics of FACE I have been formulated without keeping same mass fractions of different hydrocarbon types. Another two surrogates (Surrogate 4 and 5) were considered keeping same hydrocarbon type concentrations. A distillation based surrogate that matches measured distillation profile was proposed. The calculated molar mass, hydrogen-to-carbon (H/C) ratio and RON of Surrogate 4 and distillation based one are close to those of FACE I.Citation
Elwardany, A., Badra, J., Sim, J., Khurshid, M. et al., "Modeling of Heating and Evaporation of FACE I Gasoline Fuel and its Surrogates," SAE Technical Paper 2016-01-0878, 2016, doi:10.4271/2016-01-0878.Sponsors
Research reported in this publication was supported by King Abdullah University of Science and Technology (KAUST) and Saudi Aramco under the FUELCOM program.Publisher
SAE InternationalJournal
SAE Technical Paper SeriesConference/Event name
SAE 2016 World Congress and ExhibitionAdditional Links
http://papers.sae.org/2016-01-0878/ae974a485f413a2113503eed53cd6c53
10.4271/2016-01-0878