Abstract
Dominant parameters in unsteady flame structure of methane/air counterflow premixed flame are investigated by numerical simulation with detailed chemical kinetics model. Two boundary conditions are used for comparison of the difference in the countered gas. One is the twin counterflow premixed flames, which is spouted premixed gas from both nozzles, and the other is the single counterflow premixed flame countered premixed gas and air. In order to investigate unsteady flame behavior, a sinusoidal fluctuation is added to the spout velocity. The influences of average velocity and the fluctuation frequency of the spout velocity on flame structure are examined. It is shown that the flame structure in the single-flame is governed by a reaction progress variable defined with mass fraction of oxygen, Co, q, and its gradient, ∇Co, q evaluated at flame front. In the twin-flame, ∇Co, q and the gradient of a progress variable defined with temperature evaluated at flame front, ∇Cr, q, dominate the flame structure.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
