Abstract
The ignition process of a novel combustion concept, named swirling-flow single trapped vortex combustor (SSTVC), is proposed in the present study. A high-speed camera was employed to record the ignition processes at the atmospheric pressure, inlet reference velocity of 4.5 – 9.9 m/s (Ma 0.011 – 0.022), and temperature of 423 K – 523 K. The segmentation method of the watershed transform is adopted to explore the flame area, flame height, and ignition delay time from the digital image. The results indicate that the ignition process can be divided into four phases, spark ignition, kernel generation, flame growth, and stable combustion. The three-dimensional flame propagation characteristics in the cavity and primary region are subsequently described. The inlet reference velocity and temperature rise will accelerate the flame propagation process, and the ignition delay times are reduced accordingly. The decreased flame area can be achieved by the increased inlet reference velocity or decreased temperature. Notably, the effect of inlet temperature becomes weaker after it exceeds 473 K.
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 callDisclaimer: 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.
