Abstract
The present research work aims in investigating the large-scale jet flapping instability during the primary breakup process and its effects on the liquid shedding and the resulting flame. For this purpose, a modified coaxial burner is operated over wide range of flow conditions with different liquids in the central passage. Time-resolved images of the liquid jet breakup process and the resulting flame during spray combustion are captured. A Proper orthogonal decomposition (POD) technique is used to investigate the jet flapping and calculate the time-scale corresponding to this mode of instability. Fast-Fourier Transform (FFT) analysis is performed over the average intensity of the interrogation window in an image ensemble to measure the time-scale corresponding to liquid shedding and flame fluctuations. A strong dependence of the frequency corresponding to jet flapping, liquid shedding and flame fluctuations is observed with respect to the dispersion gas velocity. Jet flapping indicates a strong influence on the liquid shedding from the liquid jet, which then influences the resulting flame in the downstream region of the burner.
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 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.
