TY - JOUR
T1 - On the use of oscillating jet flames in a coflow to develop soot models for practical applications
AU - Jocher, Agnes
AU - Evans, Michael J.
AU - Medwell, Paul R.
AU - Dally, Bassam B.
AU - Pitsch, Heinz
AU - Nathan, Graham J.
N1 - Funding Information:
This research used resources of the National Energy Research Scientific Computing Center (NERSC), a U.S. Department of Energy Office of Science User Facility operated under Contract No. DE-AC02-05CH11231. Agnes Jocher acknowledges financial support from the DFG Research Fellowship under JO 1526/1-1.
PY - 2021
Y1 - 2021
N2 - Oscillating jet flames in a coflow mimic certain features of turbulent flows in a simplified and controllable way. The potential of the HMOM soot model, which is validated in steady laboratory flames to be applied in practical, mostly turbulent flames, was evaluated. The model accurately predicted all the measurement parameters in a steady laminar sooting jet flame of ethylene/N2 mixture. When applied to an oscillating flame with the same fuel mixture, results revealed that, while velocity, temperature, and OH fields are well predicted, the peak soot volume fraction is over predicted and occurred away from the experimentally measured location. The potential for soot model improvement was analyzed by correlating the transient gas phase species, PAH, and soot formation or destruction behaviour. The soot number density distribution in mixture fraction space was comparable to the transitional turbulent flame regime dominated by Kelvin-Helmholtz rollers.
AB - Oscillating jet flames in a coflow mimic certain features of turbulent flows in a simplified and controllable way. The potential of the HMOM soot model, which is validated in steady laboratory flames to be applied in practical, mostly turbulent flames, was evaluated. The model accurately predicted all the measurement parameters in a steady laminar sooting jet flame of ethylene/N2 mixture. When applied to an oscillating flame with the same fuel mixture, results revealed that, while velocity, temperature, and OH fields are well predicted, the peak soot volume fraction is over predicted and occurred away from the experimentally measured location. The potential for soot model improvement was analyzed by correlating the transient gas phase species, PAH, and soot formation or destruction behaviour. The soot number density distribution in mixture fraction space was comparable to the transitional turbulent flame regime dominated by Kelvin-Helmholtz rollers.
KW - Acoustic forcing
KW - Non-premixed flame
KW - Soot
UR - http://www.scopus.com/inward/record.url?scp=85089475594&partnerID=8YFLogxK
U2 - 10.1016/j.proci.2020.06.038
DO - 10.1016/j.proci.2020.06.038
M3 - Conference article
AN - SCOPUS:85089475594
SN - 1540-7489
VL - 38
SP - 1309
EP - 1317
JO - Proceedings of the Combustion Institute
JF - Proceedings of the Combustion Institute
IS - 1
T2 - 38th International Symposium on Combustion, 2021
Y2 - 24 January 2021 through 29 January 2021
ER -