TY - JOUR
T1 - Simultaneous planar measurements of temperature and soot volume fraction in a turbulent non-premixed jet flame
AU - Mahmoud, S. M.
AU - Nathan, G. J.
AU - Medwell, P. R.
AU - Dally, B. B.
AU - Alwahabi, Z. T.
N1 - Generated from Scopus record by KAUST IRTS on 2022-09-12
PY - 2015/1/1
Y1 - 2015/1/1
N2 - New measurements are reported of the soot-temperature interaction in a turbulent non-premixed ethylene-hydrogen-nitrogen attached jet flame with an exit Reynolds number of 15,000. Spatially resolved, two-dimensional temperature and soot volume fractions were measured simultaneously using non-linear excitation regime two-line atomic fluorescence (NTLAF) and laser-induced incandescence (LII) techniques, respectively. The soot-temperature correlation is presented and analyzed through representative images of single-shot simultaneous temperature and soot volume fraction at various heights, as well as through joint probability density functions (PDFs) of soot volume fraction (SVF) and temperature. A strong influence of temperature on SVF is found, which is consistent with current understanding of their inter-dependence. Axial and radial plots of mean SVF categorized into temperature bands of 300 K are also reported. These reveal that, while the mean SVF is a function of both temperature and axial distance, the joint PDF depends only weakly on radial distance. The study highlights the value of the simultaneous measurements for understanding soot behavior in a turbulent environment and for model development and validation.
AB - New measurements are reported of the soot-temperature interaction in a turbulent non-premixed ethylene-hydrogen-nitrogen attached jet flame with an exit Reynolds number of 15,000. Spatially resolved, two-dimensional temperature and soot volume fractions were measured simultaneously using non-linear excitation regime two-line atomic fluorescence (NTLAF) and laser-induced incandescence (LII) techniques, respectively. The soot-temperature correlation is presented and analyzed through representative images of single-shot simultaneous temperature and soot volume fraction at various heights, as well as through joint probability density functions (PDFs) of soot volume fraction (SVF) and temperature. A strong influence of temperature on SVF is found, which is consistent with current understanding of their inter-dependence. Axial and radial plots of mean SVF categorized into temperature bands of 300 K are also reported. These reveal that, while the mean SVF is a function of both temperature and axial distance, the joint PDF depends only weakly on radial distance. The study highlights the value of the simultaneous measurements for understanding soot behavior in a turbulent environment and for model development and validation.
UR - https://linkinghub.elsevier.com/retrieve/pii/S1540748914002806
UR - http://www.scopus.com/inward/record.url?scp=84964288399&partnerID=8YFLogxK
U2 - 10.1016/j.proci.2014.06.122
DO - 10.1016/j.proci.2014.06.122
M3 - Article
SN - 1540-7489
VL - 35
SP - 1931
EP - 1938
JO - Proceedings of the Combustion Institute
JF - Proceedings of the Combustion Institute
IS - 2
ER -