A preliminary investigation of the secondary flame and operational properties of an actively-valved pulse jet
KAUST DepartmentClean Combustion Research Center
Mechanical Engineering Program
Physical Science and Engineering (PSE) Division
high-pressure combustion (HPC) Research Group
KAUST Grant NumberBAS/1/1370-01-01
Online Publication Date2020-01-05
Print Publication Date2020-01-06
Permanent link to this recordhttp://hdl.handle.net/10754/665578
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AbstractDue to their complex nature, a clear and comprehensive understanding of the mechanisms driving the combustion dynamics of pulse jets is not yet available. The present work intends to fill this gap by shedding some light on general operational properties of an active valve resonant pulse combustor as well as fundamental mechanisms. Pressure sensors and ion probes were used to quantify the global performance of the pulse combustor in naturally-aspirated mode or for different forced air flow-rates. It was shown that performance, here indicated by the pressure gain, improves when the forced air flow-rate increases. For a subset of operating conditions, infrared and thermocouple thermometry was used to measure side wall temperatures. Gas sampling was also used to infer species concentrations inside the combustor and along its main axis. These measurements highlighted the presence of a secondary flame located in the tail pipe, near the exhaust. A possible mechanism responsible for this secondary flame was proposed.
CitationZhu, X., Lisanti, J. C., Guiberti, T., & Roberts, W. L. (2020). Performance of an Actively Valved and Acoustically Resonant Pulse Combustor with Liquid Gasoline Fuel. AIAA Scitech 2020 Forum. doi:10.2514/6.2020-0922
SponsorsThe research reported in this publication was supported by funding from King Abdullah University of Science and Technology (KAUST), under award number BAS/1/1370-01-01.
Conference/Event nameAIAA Scitech Forum, 2020