Effects of a JP-8 surrogate and its components on soot in laminar, N2-diluted ethylene co-flow diffusion flames from 1 to 5atm

Anne Geraldine Mouis, Thomas A. Litzinger, Yefu Wang, Venkatesh Iyer, Suresh Iyer, Milton Linevsky, Robert J. Santoro, Viswanath Katta

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Experimental results are presented for changes in soot volume fraction resulting from the addition of a JP-8 surrogate and each of its components to a N2-diluted, C2H4 co-flow diffusion flame. The surrogate, which consists of 77% n-dodecane and 23% m-xylene by volume, was designed to match the threshold soot index of a nominal JP-8 fuel. Total carbon flow rate was constant for all experiments; pre-vaporized liquid fuel was added at two different levels: 2.5% and 5% of the total carbon flow rate. Tests were conducted at pressures from 1 to 5atm. The use of relatively small amounts of carbon from the liquid fuel resulted in a linear relationship between the peak soot volume fraction and the amount of carbon from the liquid fuel. In these experiments, the peak soot volume fraction was found to be vary with pressure according to a power-law relationship, consistent with prior work on pressure effects on soot. The surrogate fuel showed very similar trends to the JP-8, but yielded lower soot volume fractions. Simulation results for the flames with m-xylene capture the trends of increasing soot volume fraction with increasing carbon from the liquid fuel and with increasing pressure. However, the simulations show smaller increases than were observed in the experiments.

Original languageEnglish (US)
Pages (from-to)1987-1995
Number of pages9
JournalCombustion and Flame
Volume162
Issue number5
DOIs
StatePublished - May 1 2015

Fingerprint

Soot
diffusion flames
soot
Ethylene
ethylene
liquid fuels
Liquid fuels
Volume fraction
Carbon
carbon
xylene
Xylene
flow velocity
Flow rate
trends
Pressure effects
Experiments
pressure effects
flames
simulation

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)
  • Fuel Technology
  • Energy Engineering and Power Technology
  • Physics and Astronomy(all)

Cite this

Mouis, Anne Geraldine ; Litzinger, Thomas A. ; Wang, Yefu ; Iyer, Venkatesh ; Iyer, Suresh ; Linevsky, Milton ; Santoro, Robert J. ; Katta, Viswanath. / Effects of a JP-8 surrogate and its components on soot in laminar, N2-diluted ethylene co-flow diffusion flames from 1 to 5atm. In: Combustion and Flame. 2015 ; Vol. 162, No. 5. pp. 1987-1995.
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Effects of a JP-8 surrogate and its components on soot in laminar, N2-diluted ethylene co-flow diffusion flames from 1 to 5atm. / Mouis, Anne Geraldine; Litzinger, Thomas A.; Wang, Yefu; Iyer, Venkatesh; Iyer, Suresh; Linevsky, Milton; Santoro, Robert J.; Katta, Viswanath.

In: Combustion and Flame, Vol. 162, No. 5, 01.05.2015, p. 1987-1995.

Research output: Contribution to journalArticle

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AU - Mouis, Anne Geraldine

AU - Litzinger, Thomas A.

AU - Wang, Yefu

AU - Iyer, Venkatesh

AU - Iyer, Suresh

AU - Linevsky, Milton

AU - Santoro, Robert J.

AU - Katta, Viswanath

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AB - Experimental results are presented for changes in soot volume fraction resulting from the addition of a JP-8 surrogate and each of its components to a N2-diluted, C2H4 co-flow diffusion flame. The surrogate, which consists of 77% n-dodecane and 23% m-xylene by volume, was designed to match the threshold soot index of a nominal JP-8 fuel. Total carbon flow rate was constant for all experiments; pre-vaporized liquid fuel was added at two different levels: 2.5% and 5% of the total carbon flow rate. Tests were conducted at pressures from 1 to 5atm. The use of relatively small amounts of carbon from the liquid fuel resulted in a linear relationship between the peak soot volume fraction and the amount of carbon from the liquid fuel. In these experiments, the peak soot volume fraction was found to be vary with pressure according to a power-law relationship, consistent with prior work on pressure effects on soot. The surrogate fuel showed very similar trends to the JP-8, but yielded lower soot volume fractions. Simulation results for the flames with m-xylene capture the trends of increasing soot volume fraction with increasing carbon from the liquid fuel and with increasing pressure. However, the simulations show smaller increases than were observed in the experiments.

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