Experimental investigation of recirculation zone characteristics of a pre-filming airblast injector | ||||
| International Conference on Aerospace Sciences and Aviation Technology | ||||
| Article 48, Volume 19, Issue 19, April 2021, Page 1-11 PDF (985.66 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.1088/1757-899X/1172/1/012046 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
| N Darwish1; K P Shanmugadas2; S R Chakravarthy2 | ||||
| 1University of Science and Technology at Zewail City, Giza, Egypt. | ||||
| 2National Centre for Combustion Research and Development & Department of Aerospace Engineering, Indian Institute of Technology Madras, Chennai, India. | ||||
| Abstract | ||||
| The toroidal flow at the recirculation zone has a vital role in combustion process as it helps in mixing hot combustion products with incoming fresh air and fuel which increases combustion efficiency. In the present work, characteristics of recirculation zone are investigated using a pre-filming airblast injector. Particle Image Velocimetry is used to characterize the swirl flow field generated by the airblast injector. Moreover, olive oil is used as a tracer to be captured by a high-speed camera. Different flow rates are investigated in order for finding out the effect of varying flow rates on the characteristics of the recirculation zone. Results for recirculation zone shape, velocity field and shear strength at the primary zone of combustion are represented. Additionally, results show that recirculation zone is almost symmetrical with increasing trend in shear strength with increasing flow rates. | ||||
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