TY - GEN
T1 - Experimental and numerical study on diluted premixed laminar dimethyl ether-air flames
AU - Chen, Zhaoyang
AU - Tang, Chenglong
PY - 2013
Y1 - 2013
N2 - Effects of diluents on premixed laminar dimethyl ether (DME)/air flames were studied experimentally and numerically. The results show that measurements and predictions in laminar burning velocities are in reasonably good agreement. Laminar flame speeds of DME mixtures decrease with the increase of dilution ratio. For a specific diluent ratio, suppression effect of diluents decreases in the order of carbon dioxide, nitrogen and argon. Influences of argon and nitrogen are mainly due to the increase of specific heat of the non-fuel gases in the mixture, and that of carbon dioxide is resulted from the combination effect of dilution and direct reaction. CO2 participating reaction, CO+OH→CO2+H, competes for H radical in the chain branching reaction H+O2 → O+OH. This competition decreases concentration of the radicals like H, O and OH, leading to a significant reduction in laminar burning velocity.
AB - Effects of diluents on premixed laminar dimethyl ether (DME)/air flames were studied experimentally and numerically. The results show that measurements and predictions in laminar burning velocities are in reasonably good agreement. Laminar flame speeds of DME mixtures decrease with the increase of dilution ratio. For a specific diluent ratio, suppression effect of diluents decreases in the order of carbon dioxide, nitrogen and argon. Influences of argon and nitrogen are mainly due to the increase of specific heat of the non-fuel gases in the mixture, and that of carbon dioxide is resulted from the combination effect of dilution and direct reaction. CO2 participating reaction, CO+OH→CO2+H, competes for H radical in the chain branching reaction H+O2 → O+OH. This competition decreases concentration of the radicals like H, O and OH, leading to a significant reduction in laminar burning velocity.
KW - Dilution
KW - Dimethyl ether
KW - Experiment
KW - Numerical simulation
KW - Premixed flame
UR - https://www.scopus.com/pages/publications/84884808556
U2 - 10.4028/www.scientific.net/AMR.732-733.18
DO - 10.4028/www.scientific.net/AMR.732-733.18
M3 - 会议稿件
AN - SCOPUS:84884808556
SN - 9783037857434
T3 - Advanced Materials Research
SP - 18
EP - 22
BT - Thermal, Power and Electrical Engineering
T2 - 2013 2nd International Conference on Energy and Environmental Protection, ICEEP 2013
Y2 - 19 April 2013 through 21 April 2013
ER -