ef7b03636_si_004.txt (58.22 kB)
Laminar Flame Characteristics and Kinetic Modeling Study of Ethyl Tertiary Butyl Ether Compared with Methyl Tertiary Butyl Ether, Ethanol, iso-Octane, and Gasoline
dataset
posted on 2018-02-06, 00:00 authored by Erjiang Hu, Jinfeng Ku, Geyuan Yin, Chanchan Li, Xin Lu, Zuohua HuangLaminar flame speeds
of ethyl tertiary butyl ether (ETBE) were
measured in a constant volume bomb at different initial temperatures
(298 K, 373 K, 453 K) and pressures (1 atm, 3 atm, 5 atm). The laminar
flame experiments were also conducted for methyl tertiary butyl ether
(MTBE), ethanol, iso-octane, and gasoline for the comparison of laminar
flame speeds and Markstein lengths. Experimental results show that
laminar flame speeds peak at the equivalence ratio of 1.1 for all
tested fuels. Ethanol has the fastest laminar flame speed and the
other fuels have similar flame speeds, indicating replacing MTBE with
ETBE in gasoline will not influence the laminar flame speed of present
gasoline. The CRECK and Curran mechanisms were validated by experimental
results of ETBE and neither could predict laminar flame speeds well.
Curran mechanism was optimized by updating the underlying mechanism,
and the Modified Curran mechanism has better prediction performance
on the laminar flame speed. Sensitivity analyses were also provided
to interpret the differences of laminar flame speeds and the major
reason for better prediction performance for Modified Curran mechanism.
The result of Markstein length shows that gasoline has the smallest
Markstein lengths and its flame front is the most unstable. The Markstein
lengths of ETBE and iso-octane differ little and are the largest under
ϕ < 1.2. Ethanol has the largest Markstein lengths under
ϕ > 1.2.
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MTBElaminar flame speedlaminar flame speeds peakGasoline Laminar flame speedslaminar flame speedsLaminar Flame CharacteristicsModified Curran mechanismCRECKbutyl etherKinetic Modeling StudyMethyl Tertiary Butyl Etherlaminar flame experimentsETBEExperimental results showEthyl Tertiary Butyl Etherprediction performanceMarkstein lengths
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