Numerical study on spray and flame lift-off length of acetonebutanol-ethanol and diesel blends in a constant volume chamber

Saifei Zhang, Zhengxin Xu, Wei Wu, Chia-Fon Lee

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Acetone-butanol-ethanol mixture (ABE) is being studied as an alternative fuel because it not only preserves the advantages of oxygenated fuels, but also lowers the cost of fuel recovery for butanol during fermentation. The previous experimental study on spray and flame lift-off length for diesel with 20% addition of ABE mixture, shows a shorter and narrower spray and a much longer flame lift-off length compared to those of neat diesel, which leads to considerably less soot emission level of ABE20. In this study, a detailed mechanism capable of predicting the ignition delay for ABE as well as ABE-diesel blends is implemented to the KIVA-3V program to simulate the spray dynamics and lift-off length inside the constant volume chamber. The presented model is able to capture the trends with regard to ignition delay, combustion duration and peak pressure. The overall predictivity for ABE20 is better than that of D100. Spray penetration and the lift-off length for both fuels are simulated and the numerical definition for lift-off length is discussed. It is found that the threshold temperature to define lift-off length can be uniform under different ambient temperatures, but varies with respect to oxygen concentration. The simulations also agree with the measurements in predicting the lift-off length decreases as temperature and oxygen concentration increases. Finally, the simulation sooting tendency is presented to show that, due to the improved spray and combustion process of ABE-diesel blend, the soot emission level is much less than conventional diesel fuel.

Original languageEnglish (US)
Title of host publicationASME 2016 Internal Combustion Engine Fall Technical Conference, ICEF 2016
PublisherAmerican Society of Mechanical Engineers
ISBN (Electronic)9780791850503
DOIs
StatePublished - Jan 1 2016
EventASME 2016 Internal Combustion Engine Fall Technical Conference, ICEF 2016 - Greenville, United States
Duration: Oct 9 2016Oct 12 2016

Publication series

NameASME 2016 Internal Combustion Engine Fall Technical Conference, ICEF 2016

Other

OtherASME 2016 Internal Combustion Engine Fall Technical Conference, ICEF 2016
CountryUnited States
CityGreenville
Period10/9/1610/12/16

ASJC Scopus subject areas

  • Automotive Engineering
  • Mechanical Engineering
  • Fuel Technology

Fingerprint Dive into the research topics of 'Numerical study on spray and flame lift-off length of acetonebutanol-ethanol and diesel blends in a constant volume chamber'. Together they form a unique fingerprint.

  • Cite this

    Zhang, S., Xu, Z., Wu, W., & Lee, C-F. (2016). Numerical study on spray and flame lift-off length of acetonebutanol-ethanol and diesel blends in a constant volume chamber. In ASME 2016 Internal Combustion Engine Fall Technical Conference, ICEF 2016 (ASME 2016 Internal Combustion Engine Fall Technical Conference, ICEF 2016). American Society of Mechanical Engineers. https://doi.org/10.1115/ICEF20169473