Experimental Study on a Non-Premixed Swirl-Stabilized Burner

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Mosadegh, Sepehr | 2019

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 51685 (45)
University: Sharif University of Technology
Department: Aerospace Engineering
Advisor(s): Farshchi, Mohamad
Abstract:
Burner scaling criteria have been studied and the most appropriate one has been selected to scale down a large industrial burner. The sub-scaled non-premixed swirl-stabilized burner is manufactured to ensure that the available experimental setup and equipment are sufficient and practical for characterizing the burner. The aim of the research is to assist the future design optimization with the identifications which have been done. The constant residence time method is selected in this project and it is shown that this is the proper criteria for non-premixed and swirl-stabilized burners. For better identification, stability maps of the flame are extracted with the experimental methodology for different configurations and flame in each point of the map is categorized into seven different flame regime. The color of the flame, mixing characteristics, lift-off of the flame and the approximate flow pattern is used to distinguish the flame characteristics in each regime. Next, the hysteresis regions and the flow instabilities are reported. In the end, the CH* chemiluminescence method coupled with the Abel inversion algorithm is used to characterize the reaction zone of each regime's flame more accurately
Keywords:
Flame Chemiluminescence ; Non-Premixed Flame ; Swirling Flames

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