Effects of fuel structure on soot precursors in a laminar co-flow flame

Research output: Contribution to conferencePaper

Abstract

The goal of this work is to aid in understanding the effects of fuel molecular structure on the spatial development of polycyclic aromatic hydrocarbons (PAH), or soot precursors, in an axisymmetric, co-flow, laminar flame configuration at atmospheric pressure. Two fuels with varying molecular structure are investigated: iso-octane/n-dodecane mixture and m-xylene/n-dodecane mixture. The flames investigated are non-premixed and rich premixed (jet equivalence ratio of 6) flames, and the total carbon flow rate is kept constant to facilitate comparison between fuels. A laser-induced fluorescence technique is used to obtain spatially-resolved PAH in the jet flames. The PAH are identified into two classes: single/two ring aromatics (small) and molecules having three/four rings (large). The experimental results indicate that the level of aromatics for m-xylene/n-dodecane fuel is higher compared to isooctane/n-dodecane fuel. The comparison of PAH in non-premixed and premixed flames show significant differences in the spatial development of PAH along the downstream direction. These results are compared to initial simulation results and a methodology for using the PAH-LIF technique for validating soot models in laminar jet flames is proposed.

Original languageEnglish (US)
StatePublished - Jan 1 2016
Event2016 Spring Technical Meeting of the Eastern States Section of the Combustion Institute, ESSCI 2016 - Princeton, United States
Duration: Mar 13 2016Mar 16 2016

Other

Other2016 Spring Technical Meeting of the Eastern States Section of the Combustion Institute, ESSCI 2016
CountryUnited States
CityPrinceton
Period3/13/163/16/16

Fingerprint

Soot
Polycyclic Aromatic Hydrocarbons
soot
polycyclic aromatic hydrocarbons
Polycyclic aromatic hydrocarbons
flames
xylene
Xylene
laser induced fluorescence
Molecular structure
molecular structure
laminar jets
premixed flames
rings
octanes
Laminar flow
Atmospheric pressure
equivalence
atmospheric pressure
Carbon

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering
  • Physical and Theoretical Chemistry
  • Chemical Engineering(all)

Cite this

Makwana, A., Jain, A., Linevsky, M., Iyer, S. S., Santoro, R., Litzinger, T., ... O'Connor, J. A. (2016). Effects of fuel structure on soot precursors in a laminar co-flow flame. Paper presented at 2016 Spring Technical Meeting of the Eastern States Section of the Combustion Institute, ESSCI 2016, Princeton, United States.
Makwana, A. ; Jain, A. ; Linevsky, M. ; Iyer, Suresh Sankaranarayana ; Santoro, R. ; Litzinger, Thomas ; Xuan, Yuan ; O'Connor, Jacqueline Antonia. / Effects of fuel structure on soot precursors in a laminar co-flow flame. Paper presented at 2016 Spring Technical Meeting of the Eastern States Section of the Combustion Institute, ESSCI 2016, Princeton, United States.
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abstract = "The goal of this work is to aid in understanding the effects of fuel molecular structure on the spatial development of polycyclic aromatic hydrocarbons (PAH), or soot precursors, in an axisymmetric, co-flow, laminar flame configuration at atmospheric pressure. Two fuels with varying molecular structure are investigated: iso-octane/n-dodecane mixture and m-xylene/n-dodecane mixture. The flames investigated are non-premixed and rich premixed (jet equivalence ratio of 6) flames, and the total carbon flow rate is kept constant to facilitate comparison between fuels. A laser-induced fluorescence technique is used to obtain spatially-resolved PAH in the jet flames. The PAH are identified into two classes: single/two ring aromatics (small) and molecules having three/four rings (large). The experimental results indicate that the level of aromatics for m-xylene/n-dodecane fuel is higher compared to isooctane/n-dodecane fuel. The comparison of PAH in non-premixed and premixed flames show significant differences in the spatial development of PAH along the downstream direction. These results are compared to initial simulation results and a methodology for using the PAH-LIF technique for validating soot models in laminar jet flames is proposed.",
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Makwana, A, Jain, A, Linevsky, M, Iyer, SS, Santoro, R, Litzinger, T, Xuan, Y & O'Connor, JA 2016, 'Effects of fuel structure on soot precursors in a laminar co-flow flame' Paper presented at 2016 Spring Technical Meeting of the Eastern States Section of the Combustion Institute, ESSCI 2016, Princeton, United States, 3/13/16 - 3/16/16, .

Effects of fuel structure on soot precursors in a laminar co-flow flame. / Makwana, A.; Jain, A.; Linevsky, M.; Iyer, Suresh Sankaranarayana; Santoro, R.; Litzinger, Thomas; Xuan, Yuan; O'Connor, Jacqueline Antonia.

2016. Paper presented at 2016 Spring Technical Meeting of the Eastern States Section of the Combustion Institute, ESSCI 2016, Princeton, United States.

Research output: Contribution to conferencePaper

TY - CONF

T1 - Effects of fuel structure on soot precursors in a laminar co-flow flame

AU - Makwana, A.

AU - Jain, A.

AU - Linevsky, M.

AU - Iyer, Suresh Sankaranarayana

AU - Santoro, R.

AU - Litzinger, Thomas

AU - Xuan, Yuan

AU - O'Connor, Jacqueline Antonia

PY - 2016/1/1

Y1 - 2016/1/1

N2 - The goal of this work is to aid in understanding the effects of fuel molecular structure on the spatial development of polycyclic aromatic hydrocarbons (PAH), or soot precursors, in an axisymmetric, co-flow, laminar flame configuration at atmospheric pressure. Two fuels with varying molecular structure are investigated: iso-octane/n-dodecane mixture and m-xylene/n-dodecane mixture. The flames investigated are non-premixed and rich premixed (jet equivalence ratio of 6) flames, and the total carbon flow rate is kept constant to facilitate comparison between fuels. A laser-induced fluorescence technique is used to obtain spatially-resolved PAH in the jet flames. The PAH are identified into two classes: single/two ring aromatics (small) and molecules having three/four rings (large). The experimental results indicate that the level of aromatics for m-xylene/n-dodecane fuel is higher compared to isooctane/n-dodecane fuel. The comparison of PAH in non-premixed and premixed flames show significant differences in the spatial development of PAH along the downstream direction. These results are compared to initial simulation results and a methodology for using the PAH-LIF technique for validating soot models in laminar jet flames is proposed.

AB - The goal of this work is to aid in understanding the effects of fuel molecular structure on the spatial development of polycyclic aromatic hydrocarbons (PAH), or soot precursors, in an axisymmetric, co-flow, laminar flame configuration at atmospheric pressure. Two fuels with varying molecular structure are investigated: iso-octane/n-dodecane mixture and m-xylene/n-dodecane mixture. The flames investigated are non-premixed and rich premixed (jet equivalence ratio of 6) flames, and the total carbon flow rate is kept constant to facilitate comparison between fuels. A laser-induced fluorescence technique is used to obtain spatially-resolved PAH in the jet flames. The PAH are identified into two classes: single/two ring aromatics (small) and molecules having three/four rings (large). The experimental results indicate that the level of aromatics for m-xylene/n-dodecane fuel is higher compared to isooctane/n-dodecane fuel. The comparison of PAH in non-premixed and premixed flames show significant differences in the spatial development of PAH along the downstream direction. These results are compared to initial simulation results and a methodology for using the PAH-LIF technique for validating soot models in laminar jet flames is proposed.

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Makwana A, Jain A, Linevsky M, Iyer SS, Santoro R, Litzinger T et al. Effects of fuel structure on soot precursors in a laminar co-flow flame. 2016. Paper presented at 2016 Spring Technical Meeting of the Eastern States Section of the Combustion Institute, ESSCI 2016, Princeton, United States.